/* ===== CSS Variables & Design Tokens ===== */
/* ===== THEME: DARK (default) ===== */
:root,
[data-theme="dark"] {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(20, 20, 35, 0.7);
    --bg-card-hover: rgba(25, 25, 45, 0.8);
    --bg-input: rgba(15, 15, 28, 0.9);

    --text-primary: #e8e8f0;
    --text-secondary: #8888a8;
    --text-muted: #555570;

    --accent-primary: #7c5cfc;
    --accent-primary-hover: #9478ff;
    --accent-glow: rgba(124, 92, 252, 0.3);
    --accent-secondary: #5ce0d8;
    --accent-secondary-glow: rgba(92, 224, 216, 0.2);

    --color-correct: #5ce0d8;
    --color-correct-bg: rgba(92, 224, 216, 0.08);
    --color-error: #ff5577;
    --color-error-bg: rgba(255, 85, 119, 0.12);
    --color-error-glow: rgba(255, 85, 119, 0.3);
    --color-current: #ffd166;
    --color-current-bg: rgba(255, 209, 102, 0.15);
    --color-pending: #555570;

    --border-color: rgba(124, 92, 252, 0.15);
    --border-color-hover: rgba(124, 92, 252, 0.35);

    --glow-1: rgba(124, 92, 252, 0.15);
    --glow-2: rgba(92, 224, 216, 0.1);
    --glow-3: rgba(255, 209, 102, 0.06);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== THEME: LIGHT ===== */
[data-theme="light"] {
    --bg-primary: #f0eff5;
    --bg-secondary: #e8e7ef;
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-card-hover: rgba(255, 255, 255, 0.9);
    --bg-input: rgba(255, 255, 255, 0.95);

    --text-primary: #2a2840;
    --text-secondary: #6e6b88;
    --text-muted: #a09cb8;

    --accent-primary: #6b5bd4;
    --accent-primary-hover: #7d6ee6;
    --accent-glow: rgba(107, 91, 212, 0.2);
    --accent-secondary: #4aa89e;
    --accent-secondary-glow: rgba(74, 168, 158, 0.15);

    --color-correct: #3a9e8f;
    --color-correct-bg: rgba(58, 158, 143, 0.08);
    --color-error: #d94466;
    --color-error-bg: rgba(217, 68, 102, 0.1);
    --color-error-glow: rgba(217, 68, 102, 0.2);
    --color-current: #c49520;
    --color-current-bg: rgba(196, 149, 32, 0.12);
    --color-pending: #b0adc8;

    --border-color: rgba(107, 91, 212, 0.18);
    --border-color-hover: rgba(107, 91, 212, 0.35);

    --glow-1: rgba(107, 91, 212, 0.08);
    --glow-2: rgba(74, 168, 158, 0.06);
    --glow-3: rgba(196, 149, 32, 0.04);
}

/* ===== THEME: VIOLET ===== */
[data-theme="violet"] {
    --bg-primary: #110e1e;
    --bg-secondary: #1a152c;
    --bg-card: rgba(30, 24, 50, 0.7);
    --bg-card-hover: rgba(38, 30, 62, 0.8);
    --bg-input: rgba(22, 18, 38, 0.9);

    --text-primary: #e0d8f0;
    --text-secondary: #9488b8;
    --text-muted: #5e5480;

    --accent-primary: #a78bfa;
    --accent-primary-hover: #b9a2fc;
    --accent-glow: rgba(167, 139, 250, 0.25);
    --accent-secondary: #c4b5fd;
    --accent-secondary-glow: rgba(196, 181, 253, 0.15);

    --color-correct: #b8a8f8;
    --color-correct-bg: rgba(184, 168, 248, 0.08);
    --color-error: #f07088;
    --color-error-bg: rgba(240, 112, 136, 0.12);
    --color-error-glow: rgba(240, 112, 136, 0.25);
    --color-current: #e8c870;
    --color-current-bg: rgba(232, 200, 112, 0.12);
    --color-pending: #5e5480;

    --border-color: rgba(167, 139, 250, 0.18);
    --border-color-hover: rgba(167, 139, 250, 0.4);

    --glow-1: rgba(167, 139, 250, 0.15);
    --glow-2: rgba(196, 181, 253, 0.08);
    --glow-3: rgba(232, 200, 112, 0.04);
}

/* ===== THEME: ROSE ===== */
[data-theme="rose"] {
    --bg-primary: #14100f;
    --bg-secondary: #1e1818;
    --bg-card: rgba(35, 26, 28, 0.7);
    --bg-card-hover: rgba(45, 34, 36, 0.8);
    --bg-input: rgba(25, 18, 20, 0.9);

    --text-primary: #f0e4e6;
    --text-secondary: #b09098;
    --text-muted: #705860;

    --accent-primary: #d4979e;
    --accent-primary-hover: #e0a8b0;
    --accent-glow: rgba(212, 151, 158, 0.25);
    --accent-secondary: #e8bfb0;
    --accent-secondary-glow: rgba(232, 191, 176, 0.15);

    --color-correct: #d4a8a0;
    --color-correct-bg: rgba(212, 168, 160, 0.08);
    --color-error: #e86070;
    --color-error-bg: rgba(232, 96, 112, 0.12);
    --color-error-glow: rgba(232, 96, 112, 0.25);
    --color-current: #e8c888;
    --color-current-bg: rgba(232, 200, 136, 0.12);
    --color-pending: #705860;

    --border-color: rgba(212, 151, 158, 0.18);
    --border-color-hover: rgba(212, 151, 158, 0.4);

    --glow-1: rgba(212, 151, 158, 0.12);
    --glow-2: rgba(232, 191, 176, 0.08);
    --glow-3: rgba(232, 200, 136, 0.04);
}

/* ===== THEME: GREEN ===== */
[data-theme="green"] {
    --bg-primary: #0b120e;
    --bg-secondary: #121e16;
    --bg-card: rgba(20, 35, 25, 0.7);
    --bg-card-hover: rgba(28, 45, 32, 0.8);
    --bg-input: rgba(14, 25, 18, 0.9);

    --text-primary: #d8f0e0;
    --text-secondary: #88b098;
    --text-muted: #507060;

    --accent-primary: #7cc8a0;
    --accent-primary-hover: #90d8b0;
    --accent-glow: rgba(124, 200, 160, 0.25);
    --accent-secondary: #a0d8b8;
    --accent-secondary-glow: rgba(160, 216, 184, 0.15);

    --color-correct: #80c8a0;
    --color-correct-bg: rgba(128, 200, 160, 0.08);
    --color-error: #e07068;
    --color-error-bg: rgba(224, 112, 104, 0.12);
    --color-error-glow: rgba(224, 112, 104, 0.25);
    --color-current: #c8d070;
    --color-current-bg: rgba(200, 208, 112, 0.12);
    --color-pending: #507060;

    --border-color: rgba(124, 200, 160, 0.18);
    --border-color-hover: rgba(124, 200, 160, 0.4);

    --glow-1: rgba(124, 200, 160, 0.12);
    --glow-2: rgba(160, 216, 184, 0.08);
    --glow-3: rgba(200, 208, 112, 0.04);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    line-height: 1.6;
    transition: background-color 0.5s ease, color 0.4s ease;
}

/* ===== Background Glows ===== */
.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
    transition: background 0.6s ease;
}

.bg-glow-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--glow-1), transparent 70%);
    top: -150px;
    left: -100px;
    animation: float-glow 12s ease-in-out infinite;
}

.bg-glow-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--glow-2), transparent 70%);
    bottom: -100px;
    right: -80px;
    animation: float-glow 15s ease-in-out infinite reverse;
}

.bg-glow-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--glow-3), transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float-glow 18s ease-in-out infinite;
}

@keyframes float-glow {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -20px) scale(1.05);
    }

    66% {
        transform: translate(-20px, 15px) scale(0.95);
    }
}

/* ===== App Container ===== */
.app-container {
    position: relative;
    z-index: 1;
    max-width: 860px;
    margin: 0 auto;
    padding: 28px 24px 40px;
}

/* ===== Header ===== */
.header {
    text-align: center;
    margin-bottom: 24px;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 8px;
    position: relative;
    z-index: 50;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-md);
    color: white;
    box-shadow: 0 4px 20px var(--accent-glow);
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.logo-text {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.logo-accent {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 400;
}

/* ===== Theme Menu ===== */
.theme-menu {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
}

.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    outline: none;
}

.theme-toggle-btn:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 15px var(--accent-glow);
    transform: scale(1.05);
}

.theme-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--bg-card);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    min-width: 180px;
    z-index: 100;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    animation: dropdown-in 0.2s ease both;
}

@keyframes dropdown-in {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.theme-dropdown-title {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 10px;
    padding: 0 4px;
}

.theme-options {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    width: 100%;
    text-align: left;
}

.theme-option:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.theme-option.active {
    background: rgba(255, 255, 255, 0.06);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    font-weight: 600;
}

.theme-swatch {
    display: inline-block;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

/* ===== Sections ===== */
.section {
    animation: fadeInUp 0.5s var(--transition-normal) both;
}

.hidden {
    display: none !important;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Glass Cards ===== */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: border-color var(--transition-normal), background var(--transition-slow);
}

.glass-card:hover {
    border-color: var(--border-color-hover);
}

.glass-card-mini {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    transition: all var(--transition-normal);
}

/* ===== Card Header ===== */
.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-sm);
    color: white;
    flex-shrink: 0;
    transition: background 0.4s ease;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.card-description kbd {
    display: inline-block;
    padding: 2px 8px;
    background: rgba(124, 92, 252, 0.15);
    border: 1px solid rgba(124, 92, 252, 0.3);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-primary-hover);
}

/* ===== Text Input (Setup) ===== */
.text-input {
    width: 100%;
    min-height: 90px;
    padding: 12px 18px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    resize: vertical;
    transition: all var(--transition-normal);
    outline: none;
}

.text-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow), 0 0 30px var(--accent-glow);
}

.text-input::placeholder {
    color: var(--text-muted);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    outline: none;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.1));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::after {
    opacity: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), color-mix(in srgb, var(--accent-primary) 80%, black));
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
    margin-top: 20px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--accent-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary:disabled::after {
    display: none;
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--border-color-hover);
    background: var(--bg-card-hover);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
    padding: 7px 14px;
    font-size: 0.82rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

/* ===== Random Text Category Selector ===== */
.random-text-container {
    margin-top: 14px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 14px;
}

.random-text-title {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.random-buttons {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Stats Bar ===== */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.stat-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-value small {
    font-size: 0.7em;
    font-weight: 500;
}

.error-color {
    color: var(--color-error) !important;
}

/* ===== Progress Bar ===== */
.progress-wrapper {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.progress-bar-container {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 100px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 100px;
    transition: width 0.3s ease;
    position: relative;
    box-shadow: 0 0 12px var(--accent-glow);
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.progress-text {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-secondary);
    min-width: 45px;
    text-align: right;
}

/* ===== Text Display ===== */
.typing-card {
    margin-bottom: 16px;
    padding: 24px;
}

.text-display {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    line-height: 2.1;
    letter-spacing: 0.01em;
    white-space: normal;
    word-break: keep-all;
    overflow-wrap: normal;
    user-select: none;
    min-height: 90px;
    max-height: 240px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) transparent;
}

.text-display::-webkit-scrollbar {
    width: 4px;
}

.text-display::-webkit-scrollbar-track {
    background: transparent;
}

.text-display::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 100px;
}

/* Word wrapper - prevents words from breaking across lines */
.word {
    display: inline-block;
    white-space: nowrap;
}

/* Character states */
.char {
    display: inline;
    transition: color var(--transition-fast), background-color var(--transition-fast);
    border-radius: 2px;
    padding: 1px 0;
}

.char.char-space {
    display: inline;
    white-space: pre;
}

.char-pending {
    color: var(--color-pending);
}

.char-correct {
    color: var(--color-correct);
}

.char-error {
    color: var(--color-error);
    background-color: var(--color-error-bg);
    text-decoration: underline;
    text-decoration-color: var(--color-error);
    text-underline-offset: 3px;
    animation: shake 0.2s ease-in-out;
}

.char-current {
    color: var(--color-current);
    background-color: var(--color-current-bg);
    position: relative;
}

.char-current::before {
    content: '';
    position: absolute;
    left: -1px;
    top: 2px;
    bottom: 2px;
    width: 2px;
    background: var(--color-current);
    border-radius: 2px;
    animation: blink-cursor 1s step-end infinite;
}

@keyframes blink-cursor {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-4px);
    }

    40% {
        transform: translateX(4px);
    }

    60% {
        transform: translateX(-3px);
    }

    80% {
        transform: translateX(2px);
    }
}

/* ===== Typing Input ===== */
.typing-input-wrapper {
    position: relative;
    margin-bottom: 12px;
}

.typing-input {
    width: 100%;
    padding: 16px 24px;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1.05rem;
    letter-spacing: 0.02em;
    outline: none;
    transition: all var(--transition-normal);
}

.typing-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--accent-glow), 0 0 40px var(--accent-glow);
}

.typing-input.has-error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 4px var(--color-error-glow), 0 0 30px var(--color-error-glow);
    animation: pulse-error 0.8s ease-in-out infinite;
}

@keyframes pulse-error {

    0%,
    100% {
        box-shadow: 0 0 0 4px var(--color-error-glow), 0 0 30px var(--color-error-glow);
    }

    50% {
        box-shadow: 0 0 0 4px rgba(255, 85, 119, 0.1), 0 0 15px rgba(255, 85, 119, 0.1);
    }
}

.typing-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

/* ===== Typing Hint ===== */
.typing-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 18px;
}

.typing-hint kbd {
    display: inline-block;
    padding: 1px 6px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
}

/* ===== Controls ===== */
.controls {
    display: flex;
    justify-content: center;
    gap: 12px;
}

/* ===== Results ===== */
.results-card {
    text-align: center;
    padding: 32px 24px;
}

.results-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    color: white;
    margin-bottom: 14px;
    box-shadow: 0 6px 20px var(--accent-glow);
    animation: badge-pop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.results-badge svg {
    width: 32px;
    height: 32px;
}

@keyframes badge-pop {
    from {
        transform: scale(0);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.results-title {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 4px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 22px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 26px;
}

.result-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.result-highlight {
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.08), rgba(92, 224, 216, 0.04));
    border-color: var(--accent-primary);
}

.result-number {
    font-family: var(--font-mono);
    font-size: 1.55rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
}

.result-highlight .result-number {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
}

.results-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
}

/* ===== Countdown Overlay ===== */
.typing-section {
    position: relative;
}

.countdown-overlay {
    position: absolute;
    inset: -10px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 18, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transition: opacity 0.3s ease, visibility 0.3s ease;
    animation: fadeInOverlay 0.3s ease-out;
}

[data-theme="light"] .countdown-overlay {
    background: rgba(240, 239, 245, 0.9);
}

[data-theme="violet"] .countdown-overlay {
    background: rgba(17, 14, 30, 0.9);
}

[data-theme="rose"] .countdown-overlay {
    background: rgba(30, 20, 24, 0.9);
}

[data-theme="green"] .countdown-overlay {
    background: rgba(17, 30, 22, 0.9);
}

.countdown-overlay.hidden {
    display: none !important;
}

.countdown-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    text-align: center;
}

.countdown-number {
    font-family: var(--font-sans);
    font-size: 6rem;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px var(--accent-glow));
    display: inline-block;
    user-select: none;
}

.countdown-number.pulse {
    animation: countdownPop 0.85s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.countdown-label {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    padding: 6px 20px;
    border-radius: 100px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.typing-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

@keyframes fadeInOverlay {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes countdownPop {
    0% {
        transform: scale(0.35);
        opacity: 0;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
    70% {
        transform: scale(0.95);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .app-container {
        padding: 24px 16px 40px;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-value {
        font-size: 1.3rem;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .glass-card {
        padding: 20px;
    }

    .text-display {
        font-size: 0.95rem;
    }

    .logo-text {
        font-size: 1.5rem;
    }

    .results-title {
        font-size: 1.4rem;
    }

    .result-number {
        font-size: 1.4rem;
    }

    .theme-menu {
        position: static;
        transform: none;
    }

    .header-top {
        gap: 12px;
    }
}

/* ===================================================
   MODO VIDAS (SUPERVIVENCIA) — ESTILOS & ANIMACIONES
   =================================================== */

/* Ajuste dinámico de columnas para stats-bar cuando está activo el Modo Vidas */
.stats-bar.has-lives {
    grid-template-columns: repeat(5, 1fr);
}

@media (max-width: 640px) {
    .stats-bar.has-lives {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Contenedor del Switch en Setup */
.survival-mode-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-top: 6px;
    transition: all var(--transition-normal);
}

.survival-mode-card:hover {
    border-color: var(--border-color-hover);
}

.survival-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.survival-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.survival-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.survival-title .heart-icon {
    color: #ff3366;
    filter: drop-shadow(0 0 6px rgba(255, 51, 102, 0.6));
    animation: heart-beat 1.8s infinite ease-in-out;
}

.survival-subtitle {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Switch Toggle UI */
.switch-toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    flex-shrink: 0;
}

.switch-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 34px;
}

.slider::before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 50%;
}

.switch-toggle input:checked + .slider {
    background-color: rgba(255, 51, 102, 0.25);
    border-color: #ff3366;
    box-shadow: 0 0 12px rgba(255, 51, 102, 0.4);
}

.switch-toggle input:checked + .slider::before {
    transform: translateX(22px);
    background-color: #ff3366;
    box-shadow: 0 0 10px #ff3366;
}

/* Selector de Dificultad Animado */
.difficulty-wrapper {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
    animation: slideDownFade 0.35s ease-out forwards;
}

@keyframes slideDownFade {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.difficulty-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.difficulty-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.btn-diff {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
    outline: none;
    color: var(--text-secondary);
}

.btn-diff:hover {
    border-color: rgba(255, 51, 102, 0.4);
    background: rgba(255, 51, 102, 0.05);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.btn-diff.active {
    border-color: #ff3366;
    background: linear-gradient(135deg, rgba(255, 51, 102, 0.15), rgba(255, 85, 119, 0.05));
    box-shadow: 0 0 14px rgba(255, 51, 102, 0.25);
    color: var(--text-primary);
}

.btn-diff .diff-tag {
    font-size: 0.78rem;
    font-weight: 700;
}

.btn-diff .diff-val {
    font-size: 0.75rem;
    font-family: var(--font-mono);
}

.btn-diff.diff-hardcore.active {
    border-color: #ff2a2a;
    box-shadow: 0 0 18px rgba(255, 42, 42, 0.4);
}

/* ===== ATMÓSFERA DE TENSIÓN CUANDO MODO VIDAS ESTÁ ACTIVO ===== */
body.survival-active .glass-card.typing-card,
body.survival-active .typing-input {
    border-color: rgba(255, 51, 102, 0.4);
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.12);
}

body.survival-active .typing-input:focus {
    border-color: #ff3366;
    box-shadow: 0 0 0 4px rgba(255, 51, 102, 0.25), 0 0 30px rgba(255, 51, 102, 0.35);
}

/* Stat card de Vidas */
.lives-highlight {
    color: #ff3366 !important;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.lives-hearts {
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* Efecto de Daño al cometer error */
.damage-hit {
    animation: screen-shake 0.3s ease-in-out, damage-flash 0.3s ease-out;
}

@keyframes screen-shake {
    0%, 100% { transform: translate(0, 0); }
    20% { transform: translate(-6px, 3px); }
    40% { transform: translate(6px, -3px); }
    60% { transform: translate(-4px, -2px); }
    80% { transform: translate(4px, 2px); }
}

@keyframes damage-flash {
    0% { box-shadow: 0 0 0 6px rgba(255, 51, 102, 0.7), 0 0 40px rgba(255, 51, 102, 0.5); }
    100% { box-shadow: none; }
}

@keyframes heart-beat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* Game Over en Resultados */
.results-card.game-over-state .results-badge {
    background: linear-gradient(135deg, #ff2a2a, #880022);
    box-shadow: 0 0 25px rgba(255, 42, 42, 0.5);
}

.results-card.game-over-state .results-title {
    background: linear-gradient(135deg, #ff5577, #ff2a2a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================================================
   MODO DESVANECIMIENTO — ESTILOS & ANIMACIONES
   =================================================== */

/* Acento diferenciado: cyan/teal para el modo fade */
.fade-mode-card .survival-title .fade-icon {
    color: #00d4ff;
    filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.6));
    animation: fade-icon-pulse 2.4s infinite ease-in-out;
}

@keyframes fade-icon-pulse {
    0%, 100% { opacity: 1; filter: drop-shadow(0 0 4px rgba(0, 212, 255, 0.4)); }
    50%       { opacity: 0.6; filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.8)); }
}

/* Slider variante cyan para el switch de Fade Mode */
.switch-toggle input:checked + .slider.slider-fade {
    background-color: rgba(0, 212, 255, 0.2);
    border-color: #00d4ff;
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.45);
}

.switch-toggle input:checked + .slider.slider-fade::before {
    background-color: #00d4ff;
    box-shadow: 0 0 10px #00d4ff;
}

/* Botones de velocidad activos en cyan */
.btn-speed.active {
    border-color: #00d4ff !important;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(0, 180, 220, 0.05)) !important;
    box-shadow: 0 0 14px rgba(0, 212, 255, 0.3) !important;
    color: var(--text-primary) !important;
}

.btn-speed.active.diff-hardcore {
    border-color: #00aaff !important;
    box-shadow: 0 0 18px rgba(0, 170, 255, 0.5) !important;
}

.btn-speed:hover {
    border-color: rgba(0, 212, 255, 0.45) !important;
    background: rgba(0, 212, 255, 0.06) !important;
    color: var(--text-primary) !important;
}

.fade-val {
    color: #00d4ff;
    opacity: 0.85;
}

/* ===== ATMÓSFERA FADE MODE ACTIVO ===== */
body.fade-active .glass-card.typing-card,
body.fade-active .typing-input {
    border-color: rgba(0, 212, 255, 0.35);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.08);
}

body.fade-active .typing-input:focus {
    border-color: #00d4ff;
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.2), 0 0 30px rgba(0, 212, 255, 0.25);
}

/* Carácter desvanecido — transición suave de opacidad */
.char.char-faded {
    opacity: 0 !important;
    transition: opacity 0.35s ease-out;
}

/* Ola fantasma: borde del desvanecimiento con resplandor */
.char.char-ghost-front {
    opacity: 0.15;
    text-shadow: 0 0 8px rgba(0, 212, 255, 0.7);
    transition: opacity 0.25s ease-out, text-shadow 0.25s ease-out;
}

/* Game Over por colisión: tarjeta estilo cyan-ghost */
.results-card.ghost-over-state .results-badge {
    background: linear-gradient(135deg, #006688, #003355);
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.45);
}

.results-card.ghost-over-state .results-title {
    background: linear-gradient(135deg, #00d4ff, #0077aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================================================
   1. SISTEMA DE RACHAS (COMBO GENERAL — VERDE ELEGANTE)
   =================================================== */

.combo-highlight {
    color: #22c55e;
    text-shadow: 0 0 6px rgba(34, 197, 94, 0.3);
}

.combo-highlight small {
    font-size: 0.65em;
    opacity: 0.8;
}

/* Letras en Racha Activa (Verde suave y armónico) */
.char.char-on-fire {
    color: #4ade80 !important;
    text-shadow: 0 0 4px rgba(34, 197, 94, 0.5), 0 0 8px rgba(74, 222, 128, 0.25) !important;
    animation: streak-glow 0.8s infinite alternate ease-in-out;
}

@keyframes streak-glow {
    0% {
        text-shadow: 0 0 3px rgba(34, 197, 94, 0.4), 0 0 6px rgba(74, 222, 128, 0.2);
    }
    100% {
        text-shadow: 0 0 6px rgba(34, 197, 94, 0.6), 0 0 12px rgba(74, 222, 128, 0.35);
    }
}

.typing-card.on-fire {
    border-color: rgba(34, 197, 94, 0.35) !important;
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.12), inset 0 0 10px rgba(34, 197, 94, 0.05) !important;
}

.typing-input.on-fire-border {
    border-color: #22c55e !important;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.18), 0 0 16px rgba(34, 197, 94, 0.2) !important;
}

/* ===================================================
   2. MÓDULO: TORMENTA ELÉCTRICA (MODO CAOS)
   =================================================== */

.storm-mode-card .storm-icon {
    color: #f59e0b;
    filter: drop-shadow(0 0 4px rgba(245, 158, 11, 0.6));
}

.switch-toggle input:checked + .slider.slider-storm {
    background-color: rgba(245, 158, 11, 0.2);
    border-color: #f59e0b;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.35);
}

.switch-toggle input:checked + .slider.slider-storm::before {
    background-color: #f59e0b;
    box-shadow: 0 0 8px #f59e0b;
}

/* Botones de dificultad para Caos (Tormenta) */
.btn-storm-diff.active {
    border-color: #f59e0b !important;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), rgba(245, 158, 11, 0.05)) !important;
    box-shadow: 0 0 14px rgba(245, 158, 11, 0.3) !important;
    color: var(--text-primary) !important;
}

.btn-storm-diff.active.diff-hardcore {
    border-color: #d97706 !important;
    box-shadow: 0 0 18px rgba(217, 119, 6, 0.5) !important;
}

.btn-storm-diff:hover {
    border-color: rgba(245, 158, 11, 0.45) !important;
    background: rgba(245, 158, 11, 0.06) !important;
    color: var(--text-primary) !important;
}

.storm-val {
    color: #f59e0b;
    opacity: 0.9;
    font-size: 0.72rem;
}

/* Carácter caotizado por la tormenta — Nítido, legible y sin exceso fosforescente */
.char.char-scrambled {
    color: #f59e0b !important;
    background: rgba(245, 158, 11, 0.16);
    border: 1px solid rgba(245, 158, 11, 0.4);
    border-radius: 4px;
    padding: 0 3px;
    font-weight: 700;
    text-shadow: 0 0 3px rgba(245, 158, 11, 0.35);
}

body.storm-active .glass-card.typing-card {
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: 0 0 16px rgba(245, 158, 11, 0.06);
}

/* ===================================================
   3. MÓDULO: PUNTO MUERTO (DEAD ZONE)
   =================================================== */

.deadzone-mode-card .deadzone-icon {
    color: #c084fc;
    filter: drop-shadow(0 0 6px rgba(192, 132, 252, 0.7));
}

.switch-toggle input:checked + .slider.slider-deadzone {
    background-color: rgba(192, 132, 252, 0.2);
    border-color: #c084fc;
    box-shadow: 0 0 12px rgba(192, 132, 252, 0.45);
}

.switch-toggle input:checked + .slider.slider-deadzone::before {
    background-color: #c084fc;
    box-shadow: 0 0 10px #c084fc;
}

/* Botones de dificultad para Punto Muerto (Deadzone) */
.btn-deadzone-diff.active {
    border-color: #c084fc !important;
    background: linear-gradient(135deg, rgba(192, 132, 252, 0.2), rgba(192, 132, 252, 0.05)) !important;
    box-shadow: 0 0 14px rgba(192, 132, 252, 0.35) !important;
    color: var(--text-primary) !important;
}

.btn-deadzone-diff.active.diff-hardcore {
    border-color: #a855f7 !important;
    box-shadow: 0 0 18px rgba(168, 85, 247, 0.5) !important;
}

.btn-deadzone-diff:hover {
    border-color: rgba(192, 132, 252, 0.5) !important;
    background: rgba(192, 132, 252, 0.08) !important;
    color: var(--text-primary) !important;
}

.deadzone-val {
    color: #c084fc;
    opacity: 0.9;
}

/* Banner de Dead Zone */
.deadzone-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(168, 85, 247, 0.2));
    border: 1px solid rgba(239, 68, 68, 0.4);
    border-radius: var(--radius-md);
    padding: 10px 18px;
    margin-bottom: 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.15);
    animation: banner-pulse 3s infinite ease-in-out;
}

@keyframes banner-pulse {
    0%, 100% { box-shadow: 0 4px 16px rgba(239, 68, 68, 0.15); }
    50% { box-shadow: 0 4px 24px rgba(239, 68, 68, 0.35); }
}

.deadzone-keys {
    display: inline-flex;
    gap: 6px;
    margin: 0 4px;
}

.deadzone-key-pill {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #fca5a5;
    padding: 2px 8px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-weight: 700;
    text-decoration: line-through;
    text-shadow: 0 0 4px rgba(239, 68, 68, 0.5);
}

body.deadzone-active .glass-card.typing-card {
    border-color: rgba(192, 132, 252, 0.35);
}

/* ===================================================
   4. MÓDULO: SISTEMA DE LOGROS (ACHIEVEMENTS SYSTEM & MODAL)
   =================================================== */

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.achievements-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all var(--transition-normal);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.achievements-toggle-btn svg {
    color: #ffd166;
    filter: drop-shadow(0 0 6px rgba(255, 209, 102, 0.4));
    transition: transform var(--transition-fast);
}

.achievements-toggle-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--accent-glow);
}

.achievements-toggle-btn:hover svg {
    transform: scale(1.15) rotate(-5deg);
}

.achievements-badge-count {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #ffffff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 20px;
    letter-spacing: 0.02em;
    box-shadow: 0 0 8px var(--accent-glow);
}

/* Modal Overlay */
.achievements-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 10, 20, 0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.achievements-modal-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Modal Panel */
.achievements-panel {
    width: 100%;
    max-width: 860px;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    padding: 28px;
    border-radius: var(--radius-lg);
    background: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25), 0 0 30px var(--accent-glow);
    animation: modal-pop 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    overflow: hidden;
}

@keyframes modal-pop {
    from {
        opacity: 0;
        transform: scale(0.92) translateY(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.achievements-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border-color);
}

.achievements-title-group {
    display: flex;
    align-items: center;
    gap: 14px;
}

.achievements-icon-main {
    font-size: 2.2rem;
    filter: drop-shadow(0 0 10px rgba(255, 209, 102, 0.5));
    animation: icon-bounce 1.5s infinite alternate ease-in-out;
}

.achievements-title {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.02em;
}

.achievements-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 2px 0 0 0;
}

.achievements-close-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.achievements-close-btn:hover {
    background: var(--color-error-bg);
    border-color: var(--color-error);
    color: var(--color-error);
    transform: rotate(90deg);
}

/* Summary & Progress */
.achievements-summary {
    padding: 16px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.achievements-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    font-weight: 600;
}

.achievements-progress-label {
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.achievements-progress-score {
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-weight: 700;
}

.achievements-bar-container {
    width: 100%;
    height: 10px;
    background: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.achievements-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    box-shadow: 0 0 12px var(--accent-secondary-glow);
    border-radius: 10px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Category Filters */
.achievements-categories {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    padding: 4px 0 14px 0;
    scrollbar-width: none;
}

.achievements-categories::-webkit-scrollbar {
    display: none;
}

.ach-cat-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 20px;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.ach-cat-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
    background: var(--bg-card-hover);
}

.ach-cat-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary-hover));
    color: #ffffff;
    border-color: var(--accent-primary-hover);
    box-shadow: 0 2px 10px var(--accent-glow);
}

/* Achievements Grid */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 14px;
    overflow-y: auto;
    padding: 6px 4px 10px 4px;
    margin-top: 4px;
    max-height: 52vh;
}

.achievements-grid::-webkit-scrollbar {
    width: 6px;
}

.achievements-grid::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

.achievements-grid::-webkit-scrollbar-thumb {
    background: var(--border-color-hover);
    border-radius: 4px;
}

.achievements-grid::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Achievement Item Card */
.ach-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: all var(--transition-normal);
    min-height: 140px;
}

.ach-card.ach-locked {
    opacity: 0.65;
    filter: grayscale(0.8);
    border-style: dashed;
    background: var(--bg-secondary);
}

.ach-card.ach-locked:hover {
    opacity: 0.85;
    transform: translateY(-2px);
    border-color: var(--text-muted);
}

.ach-card.ach-unlocked {
    opacity: 1;
    filter: none;
    border-color: var(--accent-secondary);
    background: var(--bg-card-hover);
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08), 0 0 12px var(--accent-secondary-glow);
}

.ach-card.ach-unlocked:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12), 0 0 20px var(--accent-glow);
}

.ach-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 10px;
}

.ach-card-icon {
    font-size: 1.8rem;
    line-height: 1;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.15));
}

.ach-status-badge {
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 12px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.ach-unlocked .ach-status-badge {
    background: rgba(34, 197, 94, 0.15);
    color: #16a34a;
    border: 1px solid rgba(34, 197, 94, 0.35);
    box-shadow: 0 0 8px rgba(34, 197, 94, 0.15);
}

[data-theme="dark"] .ach-unlocked .ach-status-badge,
[data-theme="violet"] .ach-unlocked .ach-status-badge,
[data-theme="rose"] .ach-unlocked .ach-status-badge,
[data-theme="green"] .ach-unlocked .ach-status-badge {
    color: #4ade80;
    background: rgba(34, 197, 94, 0.2);
}

.ach-locked .ach-status-badge {
    background: var(--bg-input);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.ach-card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.ach-card-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.35;
    margin-bottom: 12px;
}

.ach-card-date {
    margin-top: auto;
    font-size: 0.72rem;
    color: var(--accent-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.ach-card-date svg {
    color: #16a34a;
}

[data-theme="dark"] .ach-card-date svg,
[data-theme="violet"] .ach-card-date svg,
[data-theme="rose"] .ach-card-date svg,
[data-theme="green"] .ach-card-date svg {
    color: #4ade80;
}

/* Toast Container & Toasts */
.achievement-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

.achievement-toast {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 209, 102, 0.45);
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.5), 0 0 24px rgba(255, 209, 102, 0.22);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    min-width: 300px;
    max-width: 390px;
    animation: toast-slide-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transition: all 0.4s ease;
}

.achievement-toast.toast-hiding {
    animation: toast-slide-out 0.4s ease forwards;
}

@keyframes toast-slide-in {
    from {
        opacity: 0;
        transform: translateX(100%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes toast-slide-out {
    from {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateX(120%) scale(0.9);
    }
}

.achievement-icon {
    font-size: 2.1rem;
    line-height: 1;
    filter: drop-shadow(0 0 10px rgba(255, 209, 102, 0.6));
    animation: icon-bounce 1s infinite alternate ease-in-out;
}

@keyframes icon-bounce {
    0% { transform: translateY(0); }
    100% { transform: translateY(-4px); }
}

.achievement-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.achievement-badge {
    font-size: 0.68rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #ffd166;
    display: flex;
    align-items: center;
    gap: 4px;
}

.achievement-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.achievement-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ===================================================
   5. MÓDULO: SISTEMA ANTITRAMPAS & MODO PRÁCTICA
   =================================================== */

@keyframes shake-anim {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-8px); }
    40%, 80% { transform: translateX(8px); }
}

.shake-error {
    animation: shake-anim 0.45s ease-in-out !important;
}

.text-input.has-anticheat-error {
    border-color: #ff5577 !important;
    box-shadow: 0 0 20px rgba(255, 85, 119, 0.35) !important;
}

.anticheat-warning {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    background: rgba(255, 85, 119, 0.12);
    border: 1px solid rgba(255, 85, 119, 0.45);
    box-shadow: 0 6px 24px rgba(255, 85, 119, 0.18);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    margin-top: 10px;
    animation: warning-slide-in 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.anticheat-warning.hidden {
    display: none;
}

@keyframes warning-slide-in {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.anticheat-warning-icon {
    font-size: 1.7rem;
    line-height: 1;
    filter: drop-shadow(0 0 8px rgba(255, 85, 119, 0.6));
}

.anticheat-warning-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.anticheat-warning-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #ff708f;
    letter-spacing: -0.01em;
}

.anticheat-warning-desc {
    font-size: 0.8rem;
    color: var(--text-primary);
    line-height: 1.35;
    opacity: 0.9;
}

.btn-practice-start {
    background: rgba(255, 209, 102, 0.15);
    border: 1px solid rgba(255, 209, 102, 0.45);
    color: #ffd166;
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 700;
    padding: 8px 15px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.btn-practice-start:hover {
    background: rgba(255, 209, 102, 0.28);
    border-color: #ffd166;
    transform: translateY(-1px);
    box-shadow: 0 0 14px rgba(255, 209, 102, 0.4);
}

/* Practice Mode Banner in Typing Section */
.practice-mode-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(255, 209, 102, 0.12);
    border: 1px solid rgba(255, 209, 102, 0.4);
    box-shadow: 0 4px 18px rgba(255, 209, 102, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    padding: 10px 18px;
    margin-bottom: 16px;
    color: #ffd166;
    font-size: 0.85rem;
    font-weight: 500;
    animation: practice-pulse 3s infinite ease-in-out;
}

@keyframes practice-pulse {
    0%, 100% { box-shadow: 0 4px 16px rgba(255, 209, 102, 0.1); }
    50% { box-shadow: 0 4px 22px rgba(255, 209, 102, 0.25); }
}

.practice-mode-banner.hidden {
    display: none;
}

.practice-banner-icon {
    font-size: 1.1rem;
    filter: drop-shadow(0 0 4px rgba(255, 209, 102, 0.6));
}

/* ===================================================
   6. MÓDULO: MODO APRENDIZAJE (TOUCH TYPING TUTOR)
   =================================================== */

/* Tarjeta de entrada en Setup */
.tutor-entry-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.12), rgba(92, 224, 216, 0.08));
    border: 1px solid rgba(124, 92, 252, 0.35);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all var(--transition-normal);
}

.tutor-entry-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 6px 26px var(--accent-glow);
    transform: translateY(-1px);
}

.tutor-entry-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tutor-entry-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tutor-entry-title svg {
    color: var(--accent-primary);
    filter: drop-shadow(0 0 6px var(--accent-glow));
}

.tutor-entry-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.35;
}

.btn-tutor-start {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, var(--accent-primary), #6340e4);
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    box-shadow: 0 4px 16px var(--accent-glow);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-tutor-start:hover {
    background: linear-gradient(135deg, var(--accent-primary-hover), var(--accent-primary));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-tutor-start svg {
    transition: transform var(--transition-fast);
}

.btn-tutor-start:hover svg {
    transform: translateX(3px);
}

/* Sección Principal del Tutor */
.tutor-section {
    display: flex;
    flex-direction: column;
    gap: 18px;
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
}

/* Header del Tutor */
.tutor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 14px 22px;
    border-radius: var(--radius-md);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.tutor-header-left {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.tutor-title-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.tutor-title-group svg {
    color: var(--accent-primary);
    filter: drop-shadow(0 0 6px var(--accent-glow));
}

.tutor-main-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.tutor-level-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent-secondary);
    text-shadow: 0 0 8px var(--accent-secondary-glow);
}

/* Selector de Niveles (1 a 6) */
.tutor-level-selector {
    display: flex;
    gap: 8px;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.tutor-level-btn {
    flex: 1;
    max-width: 120px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tutor-level-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-color-hover);
}

.tutor-level-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 14px var(--accent-glow);
    transform: translateY(-1px);
}

.tutor-level-btn.completed:not(.active) {
    border-color: rgba(92, 224, 216, 0.35);
    color: var(--accent-secondary);
}

/* Área de Texto del Ejercicio */
.tutor-text-card {
    padding: 24px 28px;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tutor-text-display {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    line-height: 1.8;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    text-align: center;
    word-break: break-word;
    user-select: none;
}

.tutor-char {
    position: relative;
    padding: 2px 3px;
    border-radius: 4px;
    transition: color 120ms ease, background-color 120ms ease;
}

.tutor-char.char-correct {
    color: var(--color-correct);
    text-shadow: 0 0 10px var(--accent-secondary-glow);
}

.tutor-char.char-current {
    color: var(--color-current);
    background: var(--color-current-bg);
    box-shadow: 0 0 14px rgba(255, 209, 102, 0.4);
    font-weight: 700;
    animation: cursor-pulse 1s infinite alternate ease-in-out;
}

.tutor-char.char-current.char-space {
    border-bottom: 2px solid var(--color-current);
    padding: 2px 8px;
}

.tutor-char.char-pending {
    color: var(--text-muted);
}

@keyframes cursor-pulse {
    from { box-shadow: 0 0 8px rgba(255, 209, 102, 0.2); }
    to { box-shadow: 0 0 18px rgba(255, 209, 102, 0.6); }
}

/* Barra de Progreso del Tutor */
.tutor-progress-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tutor-progress-bar-container {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    overflow: hidden;
}

.tutor-progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 20px;
    transition: width 200ms ease-out;
    box-shadow: 0 0 10px var(--accent-glow);
}

.tutor-progress-text {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    min-width: 42px;
    text-align: right;
}

/* ===================================================
   TECLADO VIRTUAL (Distribución QWERTY + Ñ Escalonada Tipo Ladrillo)
   =================================================== */
.tutor-keyboard {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 18px 20px;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    user-select: none;
    max-width: 710px;
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
}

.kb-row {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 6px;
    width: 100%;
}

.kb-row.kb-row-space {
    justify-content: center;
}

.kb-key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 8px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 3px 0 rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    cursor: default;
    transition: transform 100ms ease, background-color 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
    position: relative;
    box-sizing: border-box;
}

/* Relieve táctil en teclas F y J */
.kb-key.has-bump::after {
    content: '';
    position: absolute;
    bottom: 5px;
    width: 10px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    opacity: 0.6;
}

/* Teclas Modificadoras y Escalonamiento Real (Staggered Layout) */
.kb-key.kb-mod {
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.06);
    user-select: none;
}

.kb-tab {
    width: 66px;
    min-width: 66px;
}

.kb-caps {
    width: 82px;
    min-width: 82px;
}

.kb-backspace {
    flex: 1;
    min-width: 78px;
}

.kb-enter {
    flex: 1;
    min-width: 76px;
}

.kb-shift-left {
    width: 104px;
    min-width: 104px;
}

.kb-shift-right {
    flex: 1;
    min-width: 82px;
}

.kb-ctrl {
    width: 54px;
    min-width: 54px;
}

.kb-alt {
    width: 50px;
    min-width: 50px;
}

.kb-key.kb-space {
    flex: 1;
    max-width: 320px;
    font-size: 0.82rem;
    letter-spacing: 0.05em;
}

/* CÓDIGO DE COLORES POR DEDO (PASTELES SUAVES) */
/* Meñique Izquierdo: Azul pastel */
.finger-lp {
    background: rgba(168, 200, 240, 0.15) !important;
    border-color: rgba(168, 200, 240, 0.4) !important;
    color: #b8d4f8 !important;
}

/* Anular Izquierdo: Verde pastel */
.finger-lr {
    background: rgba(168, 224, 168, 0.15) !important;
    border-color: rgba(168, 224, 168, 0.4) !important;
    color: #b8ecb8 !important;
}

/* Medio Izquierdo: Amarillo pastel */
.finger-lm {
    background: rgba(240, 232, 160, 0.15) !important;
    border-color: rgba(240, 232, 160, 0.4) !important;
    color: #f8f0b0 !important;
}

/* Índice Izquierdo: Naranja pastel */
.finger-li {
    background: rgba(240, 200, 160, 0.16) !important;
    border-color: rgba(240, 200, 160, 0.45) !important;
    color: #f8d0b0 !important;
}

/* Pulgares: Gris claro */
.finger-thumb {
    background: rgba(200, 200, 216, 0.14) !important;
    border-color: rgba(200, 200, 216, 0.35) !important;
    color: #d8d8e4 !important;
}

/* Índice Derecho: Naranja suave */
.finger-ri {
    background: rgba(240, 204, 168, 0.16) !important;
    border-color: rgba(240, 204, 168, 0.45) !important;
    color: #f8d4b8 !important;
}

/* Medio Derecho: Amarillo suave */
.finger-rm {
    background: rgba(240, 236, 168, 0.15) !important;
    border-color: rgba(240, 236, 168, 0.4) !important;
    color: #f8f4b8 !important;
}

/* Anular Derecho: Verde suave */
.finger-rr {
    background: rgba(176, 232, 176, 0.15) !important;
    border-color: rgba(176, 232, 176, 0.4) !important;
    color: #c4f0c4 !important;
}

/* Meñique Derecho: Azul suave */
.finger-rp {
    background: rgba(176, 208, 240, 0.15) !important;
    border-color: rgba(176, 208, 240, 0.4) !important;
    color: #c4dcfa !important;
}

/* ESTADOS VISUALES CRÍTICOS */

/* 1. Tecla Activa (.key-active): Resplandor intenso y animación de respiración */
.kb-key.key-active {
    transform: translateY(-2px) scale(1.08);
    box-shadow: 0 0 18px currentColor, 0 4px 10px rgba(0, 0, 0, 0.4) !important;
    border-color: #ffffff !important;
    font-weight: 900 !important;
    z-index: 5;
    animation: key-pulse-glow 1.1s infinite alternate ease-in-out !important;
}

@keyframes key-pulse-glow {
    0% {
        box-shadow: 0 0 10px currentColor, 0 3px 6px rgba(0, 0, 0, 0.3);
        transform: translateY(-1px) scale(1.04);
    }
    100% {
        box-shadow: 0 0 24px currentColor, 0 0 36px currentColor, 0 6px 14px rgba(0, 0, 0, 0.5);
        transform: translateY(-3px) scale(1.10);
    }
}

/* 2. Tecla Presionada (.key-pressed): Efecto efímero */
.kb-key.key-pressed {
    transform: translateY(2px) scale(0.94) !important;
    background-color: var(--color-correct) !important;
    color: #0a0a0f !important;
    box-shadow: 0 0 16px var(--color-correct) !important;
    border-color: var(--color-correct) !important;
    transition: transform 50ms ease !important;
}

/* 3. Tecla con Error (.key-error): Rojo intenso con sacudida */
.kb-key.key-error {
    background-color: #ff5577 !important;
    color: #ffffff !important;
    border-color: #ff3366 !important;
    box-shadow: 0 0 22px rgba(255, 85, 119, 0.8) !important;
    animation: key-shake 300ms ease-in-out !important;
    z-index: 6;
}

@keyframes key-shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

/* ===================================================
   GRÁFICO DE MANOS (IZQUIERDA Y DERECHA)
   =================================================== */
.tutor-hands {
    display: flex;
    justify-content: center;
    gap: 40px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.hand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.hand-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.fingers-row {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.finger {
    width: 32px;
    height: 48px;
    border-radius: 16px 16px 8px 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 800;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.25);
    transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
    cursor: default;
}

/* Altura anatómica diferenciada por dedo */
.finger-left-pinky,
.finger-right-pinky {
    height: 38px;
}

.finger-left-ring,
.finger-right-ring {
    height: 48px;
}

.finger-left-middle,
.finger-right-middle {
    height: 54px;
}

.finger-left-index,
.finger-right-index {
    height: 46px;
}

.finger-left-thumb,
.finger-right-thumb {
    height: 32px;
    border-radius: 12px 12px 6px 6px;
}

/* Dedo Activo (.finger-active): Brillo idéntico a la tecla */
.finger.finger-active {
    transform: translateY(-6px) scale(1.14);
    box-shadow: 0 0 20px currentColor, 0 4px 12px rgba(0, 0, 0, 0.5) !important;
    border: 2px solid #ffffff !important;
    filter: brightness(1.35);
    animation: finger-bounce 0.9s infinite alternate ease-in-out;
}

@keyframes finger-bounce {
    0% { transform: translateY(-4px) scale(1.1); }
    100% { transform: translateY(-8px) scale(1.18); }
}

/* Controles Inferiores del Tutor */
.tutor-controls {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-top: 4px;
}

/* Adaptabilidad para pantallas más pequeñas */
@media (max-width: 768px) {
    .tutor-keyboard {
        padding: 12px 8px;
        gap: 4px;
    }

    .kb-row {
        gap: 4px;
    }

    .kb-key {
        min-width: 26px;
        height: 36px;
        font-size: 0.78rem;
        padding: 0 2px;
    }

    .kb-tab { width: 40px; min-width: 40px; font-size: 0.65rem; }
    .kb-caps { width: 48px; min-width: 48px; font-size: 0.65rem; }
    .kb-backspace { min-width: 44px; font-size: 0.65rem; }
    .kb-enter { min-width: 44px; font-size: 0.65rem; }
    .kb-shift-left { width: 56px; min-width: 56px; font-size: 0.65rem; }
    .kb-shift-right { min-width: 46px; font-size: 0.65rem; }
    .kb-ctrl { width: 34px; min-width: 34px; font-size: 0.65rem; }
    .kb-alt { width: 32px; min-width: 32px; font-size: 0.65rem; }

    .kb-key.kb-space {
        max-width: 170px;
    }

    .tutor-hands {
        gap: 14px;
    }

    .finger {
        width: 22px;
        font-size: 0.6rem;
    }

    .tutor-text-display {
        font-size: 1.25rem;
    }
}

/* ===================================================
   BLOQUEO DE NIVELES (PROGRESIÓN SECUENCIAL ESTRICTA)
   =================================================== */
.tutor-level-btn.locked {
    opacity: 0.45;
    cursor: not-allowed;
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.05);
    position: relative;
}

.tutor-level-btn.locked:hover {
    background: rgba(255, 85, 119, 0.1);
    border-color: rgba(255, 85, 119, 0.3);
    color: var(--color-error);
}

.tutor-level-btn.locked::after {
    content: ' 🔒';
    font-size: 0.62rem;
    opacity: 0.8;
}

/* ===================================================
   ADAPTACIÓN TEMA CLARO PARA MODO APRENDIZAJE
   =================================================== */
[data-theme="light"] .tutor-entry-card {
    background: linear-gradient(135deg, rgba(107, 91, 212, 0.08), rgba(74, 168, 158, 0.06));
    border-color: rgba(107, 91, 212, 0.25);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .tutor-header {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(107, 91, 212, 0.18);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .tutor-main-title {
    color: #1e1b4b;
}

[data-theme="light"] .tutor-level-label {
    color: #4338ca;
    text-shadow: none;
}

[data-theme="light"] .tutor-level-selector {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(107, 91, 212, 0.15);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .tutor-level-btn {
    background: rgba(0, 0, 0, 0.04);
    color: #4b5563;
    border-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .tutor-level-btn:hover:not(.locked) {
    background: rgba(107, 91, 212, 0.12);
    color: var(--accent-primary);
    border-color: rgba(107, 91, 212, 0.3);
}

[data-theme="light"] .tutor-level-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), #4f46e5);
    color: #ffffff;
}

[data-theme="light"] .tutor-level-btn.completed:not(.active) {
    border-color: rgba(16, 185, 129, 0.4);
    color: #059669;
    background: rgba(16, 185, 129, 0.08);
}

[data-theme="light"] .tutor-level-btn.locked {
    background: rgba(0, 0, 0, 0.03);
    color: #9ca3af;
    opacity: 0.55;
    border-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .tutor-text-card {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(107, 91, 212, 0.18);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .tutor-char.char-pending {
    color: #8b88a8;
}

[data-theme="light"] .tutor-char.char-correct {
    color: #059669;
    text-shadow: none;
}

[data-theme="light"] .tutor-char.char-current {
    color: #b45309;
    background: rgba(245, 158, 11, 0.16);
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.3);
}

[data-theme="light"] .tutor-progress-bar-container {
    background: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .tutor-progress-text {
    color: #4b5563;
}

[data-theme="light"] .tutor-keyboard {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(107, 91, 212, 0.18);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .kb-key {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.12);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.12), inset 0 1px 0 #ffffff;
    color: #1e1b4b;
}

/* Colores de alto contraste por dedo para Tema Claro */
[data-theme="light"] .finger-lp {
    background: rgba(37, 99, 235, 0.12) !important;
    border-color: rgba(37, 99, 235, 0.4) !important;
    color: #1d4ed8 !important; /* Azul oscuro nítido */
}

[data-theme="light"] .finger-lr {
    background: rgba(22, 163, 74, 0.12) !important;
    border-color: rgba(22, 163, 74, 0.4) !important;
    color: #15803d !important; /* Verde oscuro nítido */
}

[data-theme="light"] .finger-lm {
    background: rgba(202, 138, 4, 0.14) !important;
    border-color: rgba(202, 138, 4, 0.4) !important;
    color: #a16207 !important; /* Ámbar oscuro nítido */
}

[data-theme="light"] .finger-li {
    background: rgba(234, 88, 12, 0.13) !important;
    border-color: rgba(234, 88, 12, 0.4) !important;
    color: #c2410c !important; /* Naranja oscuro nítido */
}

[data-theme="light"] .finger-thumb {
    background: rgba(71, 85, 105, 0.12) !important;
    border-color: rgba(71, 85, 105, 0.35) !important;
    color: #334155 !important; /* Pizarra oscuro nítido */
}

[data-theme="light"] .finger-ri {
    background: rgba(234, 88, 12, 0.13) !important;
    border-color: rgba(234, 88, 12, 0.4) !important;
    color: #c2410c !important; /* Naranja oscuro nítido */
}

[data-theme="light"] .finger-rm {
    background: rgba(202, 138, 4, 0.14) !important;
    border-color: rgba(202, 138, 4, 0.4) !important;
    color: #a16207 !important; /* Ámbar oscuro nítido */
}

[data-theme="light"] .finger-rr {
    background: rgba(22, 163, 74, 0.12) !important;
    border-color: rgba(22, 163, 74, 0.4) !important;
    color: #15803d !important; /* Verde oscuro nítido */
}

[data-theme="light"] .finger-rp {
    background: rgba(37, 99, 235, 0.12) !important;
    border-color: rgba(37, 99, 235, 0.4) !important;
    color: #1d4ed8 !important; /* Azul oscuro nítido */
}

/* Manos en Tema Claro */
[data-theme="light"] .tutor-hands {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(107, 91, 212, 0.18);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .hand-label {
    color: #4b5563;
    font-weight: 800;
}

[data-theme="light"] .finger {
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.12);
}

/* Estados en Tema Claro */
[data-theme="light"] .kb-key.key-active {
    border-color: #4f46e5 !important;
    box-shadow: 0 0 16px rgba(79, 70, 229, 0.6), 0 4px 12px rgba(79, 70, 229, 0.25) !important;
    background: #ffffff !important;
}

[data-theme="light"] .finger.finger-active {
    border-color: #4f46e5 !important;
    box-shadow: 0 0 16px currentColor, 0 4px 10px rgba(0, 0, 0, 0.15) !important;
}