/* ========================================
   Typen — Design System
   Aesthetic: focused workshop. Deep slate-navy with a single
   electric-cyan accent. Restrained gradients, tactile depth,
   precise typography. Engaging without being childish.
======================================== */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@500;600;700;800&family=JetBrains+Mono:wght@500;700&display=swap');

:root {
    /* ---- Brand & accent ---- */
    --primary: #38bdf8;              /* electric sky */
    --primary-light: #7dd3fc;
    --primary-dark: #0284c7;
    --primary-glow: rgba(56, 189, 248, 0.35);
    --secondary: #818cf8;            /* indigo accent for gradients only */
    --accent: #22d3ee;

    /* ---- Status ---- */
    --success: #34d399;
    --success-light: #6ee7b7;
    --success-glow: rgba(52, 211, 153, 0.35);
    --error: #f87171;
    --error-light: #fca5a5;
    --error-glow: rgba(248, 113, 113, 0.35);
    --warning: #fbbf24;

    /* ---- Surfaces (deep slate-navy, low chroma) ---- */
    --bg-base: #070d1a;              /* page floor */
    --bg-dark: #0b1426;              /* inset wells */
    --bg-card: #101a2f;              /* card surface */
    --bg-card-hi: #142441;           /* raised surface */
    --bg-hover: #18294a;
    --surface-glass: rgba(20, 36, 65, 0.6);

    /* ---- Borders & dividers ---- */
    --border-subtle: rgba(148, 163, 184, 0.08);
    --border-soft: rgba(148, 163, 184, 0.14);
    --border-strong: rgba(125, 211, 252, 0.25);
    --border-color: rgba(148, 163, 184, 0.18);  /* legacy alias */
    --key-border: rgba(125, 211, 252, 0.18);    /* legacy alias */

    /* ---- Text ---- */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-faint: #475569;

    /* ---- Keyboard ---- */
    --key-bg: #142441;
    --key-bg-hover: #1c3157;
    --key-face: #1a2b4d;
    --key-shadow: #050a16;
    --key-highlight: var(--primary);
    --key-highlight-glow: var(--primary-glow);

    /* ---- Spacing ---- */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* ---- Radius (sharper, calmer) ---- */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 14px;
    --radius-pill: 999px;

    /* ---- Shadows (tighter; less blur) ---- */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.30);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.30);
    --shadow-lg: 0 12px 40px -16px rgba(0, 0, 0, 0.55);
    --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    --ring-focus: 0 0 0 2px rgba(56, 189, 248, 0.45);

    /* ---- Motion ---- */
    --transition-fast: 140ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 220ms cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

    /* ---- Typography ---- */
    --font-display: 'Sora', 'Nunito', system-ui, sans-serif;
    --font-body: 'Nunito', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    /* ---- Gradients (used sparingly) ---- */
    --accent-gradient: linear-gradient(135deg, #38bdf8, #818cf8);
    --bg-gradient-start: #070d1a;
    --bg-gradient-end: #101a2f;

    /* ---- Legacy aliases (do not remove — referenced by inline styles) ---- */
    --card-bg: var(--bg-card);
    --input-bg: var(--bg-dark);
    --error-bg: rgba(248, 113, 113, 0.12);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*::selection {
    background: var(--primary-glow);
    color: var(--text-primary);
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow-x: hidden;
}

/* Atmosphere: a single, very subtle accent wash anchored top-left.
   Kept intentionally quiet so the keyboard + exercise area are the focal points. */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background: radial-gradient(ellipse 50% 40% at 10% 0%, rgba(56, 189, 248, 0.06), transparent 70%);
    pointer-events: none;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

/* ========================================
   Layout
======================================== */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: clamp(0.75rem, 2vw, 1.5rem);
}

/* ========================================
   Navigation
======================================== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-soft);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.logo-icon {
    font-size: 1.6rem;
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 0.25rem;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.1rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.nav-btn:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-btn.active {
    color: var(--primary-light);
    background: rgba(56, 189, 248, 0.10);
    border-color: var(--border-strong);
}

.nav-icon {
    font-size: 1.1rem;
}

/* ========================================
   Pages
======================================== */
.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.35s var(--ease-out);
}

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

.page-title {
    text-align: center;
    font-family: var(--font-display);
    font-size: 1.85rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

/* ========================================
   Keyboard Controls (custom toggle switches)
======================================== */
.keyboard-controls {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
    margin-bottom: 0.7rem;
    padding: 0.55rem 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
}

.keyboard-toggle-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.kleurtjes-toggle {
    --switch-w: 38px;
    --switch-h: 22px;
    --knob: 16px;
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.4rem 0.7rem;
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    transition: background var(--transition-fast), color var(--transition-fast);
    font-family: var(--font-body);
}

.kleurtjes-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Hide native checkbox but keep accessible */
.kleurtjes-toggle input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    position: relative;
    width: var(--switch-w);
    height: var(--switch-h);
    margin: 0;
    border-radius: var(--radius-pill);
    background: #0a1426;
    border: 1px solid var(--border-soft);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.4);
    cursor: pointer;
    transition: background var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    flex: 0 0 auto;
}

.kleurtjes-toggle input[type="checkbox"]::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 2px;
    width: var(--knob);
    height: var(--knob);
    border-radius: 50%;
    background: linear-gradient(180deg, #cbd5e1, #94a3b8);
    transform: translateY(-50%);
    transition: left var(--transition-normal) var(--ease-out), background var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.kleurtjes-toggle input[type="checkbox"]:checked {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: transparent;
    box-shadow: 0 0 0 1px var(--primary-dark), 0 0 12px var(--primary-glow);
}

.kleurtjes-toggle input[type="checkbox"]:checked::after {
    left: calc(var(--switch-w) - var(--knob) - 2px);
    background: linear-gradient(180deg, #ffffff, #e0f2fe);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4), 0 0 8px rgba(255, 255, 255, 0.3);
}

.kleurtjes-toggle input[type="checkbox"]:focus-visible {
    outline: none;
    box-shadow: var(--ring-focus);
}

.toggle-label {
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    white-space: nowrap;
}

/* Keyboard layout (AZERTY/QWERTY) toggle, pinned at the bottom of the page */
.layout-toggle-bar {
    display: flex;
    justify-content: center;
    margin: 2rem auto 0.5rem;
    padding: 0.55rem 0.75rem;
}

.layout-toggle-bar .kleurtjes-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
}

/* ========================================
   Keyboard
======================================== */
.keyboard {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-soft);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.keyboard-row:nth-child(2) { transform: translateX(49px); }
.keyboard-row:nth-child(3) { transform: translateX(61px); }
.keyboard-row:nth-child(4) { transform: translateX(12px); }

.key {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 45px;
    height: 45px;
    padding: var(--spacing-sm);
    background: var(--key-face);
    border: 1px solid var(--border-soft);
    border-top-color: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    cursor: default;
    transition: transform 0.12s ease-out, background 0.12s ease-out, box-shadow 0.12s ease-out, border-color 0.12s ease-out, opacity 0.12s ease-out;
    box-shadow: 0 2px 0 var(--key-shadow);
    opacity: 1;
}

.key.key-dual {
    flex-direction: column;
    justify-content: center;
    gap: 1px;
    padding: 2px var(--spacing-sm);
    text-transform: none;
}

.key-shift {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-muted);
    line-height: 1;
}

.key-normal {
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1;
}

.key.highlight {
    background: var(--primary);
    border-color: var(--primary-light);
    color: #04141f;
    box-shadow: 0 0 0 1px var(--primary), 0 0 18px var(--primary-glow);
    transform: translateY(2px);
    transition: transform 0.05s ease, background 0.05s ease, box-shadow 0.05s ease, border-color 0.05s ease;
}

.key.highlight-error {
    background: var(--error);
    border-color: var(--error-light);
    color: #2a0008;
    box-shadow: 0 0 0 1px var(--error), 0 0 18px var(--error-glow);
    transform: translateY(2px);
    transition: transform 0.05s ease, background 0.05s ease, box-shadow 0.05s ease, border-color 0.05s ease;
}

.key.key-releasing {
    transform: translateY(0);
    transition: transform 0.1s ease-out, background 0.1s ease-out, box-shadow 0.1s ease-out, border-color 0.1s ease-out;
}

/* Finger Zone Colors — muted, only visible when Toetsenbord Overlay is on */
.key.zone-green {
    background: #0f3a21;
    border-color: rgba(34, 197, 94, 0.5);
    color: #86efac;
}

.key.zone-yellow {
    background: #5a3008;
    border-color: rgba(234, 179, 8, 0.55);
    color: #fde047;
}

.key.zone-blue {
    background: #182c66;
    border-color: rgba(96, 165, 250, 0.55);
    color: #93c5fd;
}

.key.zone-red {
    background: #5a1414;
    border-color: rgba(248, 113, 113, 0.55);
    color: #fca5a5;
}

.key.zone-white {
    background: #334155;
    border-color: rgba(226, 232, 240, 0.45);
    color: #f1f5f9;
}

/* Special keys */
.key.space { min-width: 300px; }
.key.tab, .key.caps { min-width: 70px; }
.key.shift { min-width: 90px; }
.key.backspace, .key.enter { min-width: 80px; }

/* ========================================
   Exercise Area
======================================== */
.exercise-area {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-soft);
}

.exercise-selector {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.exercise-selector label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}

/* Custom select */
.exercise-selector select,
select {
    appearance: none;
    -webkit-appearance: none;
    padding: 0.7rem 2.6rem 0.7rem 1rem;
    background-color: var(--bg-dark);
    background-image:
        linear-gradient(45deg, transparent 50%, var(--primary-light) 50%),
        linear-gradient(135deg, var(--primary-light) 50%, transparent 50%);
    background-position:
        calc(100% - 1.1rem) 50%,
        calc(100% - 0.7rem) 50%;
    background-size: 6px 6px, 6px 6px;
    background-repeat: no-repeat;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    min-width: 260px;
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.exercise-selector select:hover,
select:hover {
    border-color: var(--border-strong);
    background-color: var(--bg-hover);
}

.exercise-selector select:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--ring-focus);
}

select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

/* ========================================
   Buttons
======================================== */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    cursor: pointer;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--ring-focus);
}

.btn-primary {
    background: var(--primary);
    color: #04141f;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.18) inset;
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
}

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

.btn-danger {
    background: var(--error);
    color: #fff;
}

.btn-danger:hover {
    background: var(--error-light);
    color: #4c0519;
    transform: translateY(-1px);
}

.btn-game {
    background: var(--secondary);
    color: #04141f;
    font-size: 0.95rem;
    padding: 0.65rem 1.25rem;
    margin-top: 0;
    display: inline-flex;
    text-decoration: none;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.18) inset;
}

.btn-game:hover {
    background: #a5b4fc;
    transform: translateY(-1px);
}

.btn-secondary {
    padding: 0.65rem 1.3rem;
    font-size: 0.9rem;
    font-weight: 700;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    background: var(--bg-dark);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-display);
}

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

.btn-sm {
    padding: 0.45rem 0.9rem;
    font-size: 0.825rem;
}

/* ========================================
   Typing area
======================================== */
.typing-area {
    text-align: left;
}

/* ---- Progress bar ---- */
.progress-bar {
    height: 5px;
    background: var(--bg-hover);
    border-radius: var(--radius-pill);
    overflow: hidden;
    margin-bottom: 0.65rem;
    border: 1px solid var(--border-subtle);
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: var(--radius-pill);
    width: 0%;
    transition: width 80ms linear;
    box-shadow: 0 0 10px var(--primary-glow);
}

/* ---- Sentence display ---- */
.sentence-display {
    font-family: var(--font-mono);
    font-size: clamp(1.15rem, 2.2vw, 1.65rem);
    font-weight: 500;
    letter-spacing: 0.025em;
    line-height: 2.35;
    padding: clamp(1rem, 2vw, 1.5rem) clamp(1rem, 2.5vw, 1.75rem) clamp(0.85rem, 1.5vw, 1.25rem);
    background: var(--bg-dark);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: block;
    text-align: left;
    word-break: normal;
    overflow-wrap: normal;
}

.sentence-display.long-sentence {
    font-size: clamp(1rem, 1.85vw, 1.35rem);
    line-height: 2.2;
}

.sentence-display.very-long-sentence {
    font-size: clamp(0.875rem, 1.5vw, 1.1rem);
    line-height: 2.1;
}

/* Word wrapper — keeps each word on one line; spaces between wrappers are the break points */
.word {
    display: inline-block;
    white-space: nowrap;
}

/* ---- Characters ---- */
.char {
    display: inline-block;
    vertical-align: baseline;
    padding: 0 2px;
    border-radius: 3px;
    transition: color 60ms ease, background 60ms ease, box-shadow 60ms ease;
    color: var(--text-muted);
}

.char.current {
    background: var(--primary);
    color: #04141f;
    font-weight: 700;
    border-radius: 3px;
    animation: cursorPulse 1.1s ease-in-out infinite;
}

@keyframes cursorPulse {
    0%, 100% {
        box-shadow: 0 0 0 1.5px var(--primary),
                    0 0 14px var(--primary-glow);
    }
    50% {
        box-shadow: 0 0 0 2.5px var(--primary-light),
                    0 0 26px rgba(56, 189, 248, 0.5);
    }
}

.char.correct {
    color: var(--success-light);
    background: rgba(110, 231, 183, 0.07);
}

.char.incorrect {
    color: var(--error-light);
    background: rgba(248, 113, 113, 0.15);
    border-radius: 2px;
}

.char.space {
    padding: 0 1px;
}

/* Typed input — hidden mirror, kept for JS only */
.typed-input-wrapper {
    height: 0;
    overflow: hidden;
    margin: 0;
    pointer-events: none;
}

.typed-input {
    width: 100%;
    padding: 0.9rem 1.2rem;
    font-size: 1.2rem;
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
    color: var(--text-primary);
    background: var(--bg-dark);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    outline: none;
    cursor: default;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.3);
}

.typed-input:focus {
    border-color: var(--primary);
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.3), var(--ring-focus);
}

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


/* Stats */
.stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.9rem 1.4rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    min-width: 110px;
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-1px);
}

.stat-icon {
    font-size: 1.25rem;
    margin-bottom: 0.2rem;
    opacity: 0.85;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--primary-light);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 0.3rem;
}

/* Completion */
.completion-message {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.completion-message h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: var(--spacing-md);
    color: var(--primary-light);
    animation: rise 0.4s var(--ease-out);
}

@keyframes rise {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.completion-message p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.completion-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Replay */
.replay-area {
    text-align: center;
}

.replay-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.replay-header h3 {
    font-family: var(--font-display);
    font-size: 1.35rem;
    color: var(--text-primary);
    margin: 0;
}

/* Completion review */
.completion-review {
    margin: var(--spacing-lg) 0;
}

.review-section {
    background: var(--bg-dark);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: left;
}

.review-row {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.review-row:last-child { margin-bottom: 0; }

.review-separator {
    border: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-soft), transparent);
    margin: 0.7rem 0 0.9rem;
}

.review-label {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--text-muted);
    min-width: 70px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.review-text {
    font-size: 1.15rem;
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
    line-height: 1.85;
    display: flex;
    flex-wrap: wrap;
}

.review-char {
    display: inline-block;
    padding: 1px 2px;
    border-radius: 3px;
}

.review-correct { color: var(--text-primary); }

.review-error-expected {
    color: var(--success);
    background: rgba(52, 211, 153, 0.14);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.review-error-typed {
    color: var(--error);
    background: rgba(248, 113, 113, 0.14);
    text-decoration: line-through;
}

/* ========================================
   Admin page
======================================== */
.admin-container {
    max-width: 900px;
    margin: 0 auto;
}

.add-sentence-form,
.sentences-list {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-soft);
}

.add-sentence-form h2,
.sentences-list h2 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.form-group {
    display: flex;
    gap: var(--spacing-md);
}

.form-group input,
input[type="text"],
input[type="password"],
textarea {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.form-group input:focus,
input[type="text"]:focus,
input[type="password"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2), var(--ring-focus);
}

.form-group input::placeholder,
input::placeholder,
textarea::placeholder {
    color: var(--text-faint);
}

.sentence-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.sentence-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-strong);
    transform: translateX(2px);
}

.sentence-text {
    font-size: 0.95rem;
    flex: 1;
    margin-right: var(--spacing-md);
}

.delete-btn {
    padding: 0.35rem 0.7rem;
    background: transparent;
    border: 1px solid rgba(248, 113, 113, 0.5);
    border-radius: var(--radius-sm);
    color: var(--error);
    font-family: inherit;
    font-size: 0.825rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.delete-btn:hover {
    background: var(--error);
    color: #fff;
    box-shadow: 0 0 12px var(--error-glow);
}

.no-sentences {
    text-align: center;
    color: var(--text-muted);
    font-size: 1rem;
    padding: var(--spacing-xl);
}

/* ========================================
   Utilities
======================================== */
.hidden { display: none !important; }

/* Scrollbar */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border: 3px solid var(--bg-base);
    border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-strong);
}

/* ========================================
   Responsive
======================================== */

/* Mid-range laptops: 1024px–1180px */
@media (max-width: 1180px) {
    .key {
        min-width: 42px;
        height: 42px;
    }
    .key.space { min-width: 260px; }
    .key.shift { min-width: 80px; }
    .key.tab, .key.caps { min-width: 64px; }
    .key.backspace, .key.enter { min-width: 72px; }
    .keyboard-row:nth-child(2) { transform: translateX(44px); }
    .keyboard-row:nth-child(3) { transform: translateX(55px); }
    .keyboard-row:nth-child(4) { transform: translateX(11px); }
}

/* Small laptops / large tablets: 900px–1024px */
@media (max-width: 1024px) {
    .key {
        min-width: 37px;
        height: 38px;
        font-size: 0.78rem;
        padding: 0.35rem;
    }
    .key.space { min-width: 220px; }
    .key.shift { min-width: 66px; }
    .key.tab, .key.caps { min-width: 56px; }
    .key.backspace, .key.enter { min-width: 64px; }
    .keyboard-row:nth-child(2) { transform: translateX(39px); }
    .keyboard-row:nth-child(3) { transform: translateX(48px); }
    .keyboard-row:nth-child(4) { transform: translateX(9px); }
    .keyboard { padding: 0.85rem; }
}

/* Tablets and small screens: ≤ 900px */
@media (max-width: 900px) {
    .key {
        min-width: 32px;
        height: 35px;
        font-size: 0.72rem;
        padding: 0.25rem;
        gap: 1px;
    }
    .key.space { min-width: 180px; }
    .key.shift { min-width: 54px; }
    .key.tab, .key.caps { min-width: 48px; }
    .key.backspace, .key.enter { min-width: 52px; }
    .keyboard-row:nth-child(2) { transform: translateX(33px); }
    .keyboard-row:nth-child(3) { transform: translateX(41px); }
    .keyboard-row:nth-child(4) { transform: translateX(8px); }
    .keyboard { padding: var(--spacing-sm); }
    .keyboard-row { gap: 3px; }
}

/* Small screens: ≤ 768px */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .keyboard-controls {
        justify-content: center;
    }

    .keyboard {
        padding: var(--spacing-sm);
    }

    .keyboard-row { gap: 3px; }

    .key {
        min-width: 28px;
        height: 32px;
        font-size: 0.65rem;
        padding: 0.2rem;
    }

    .key.space { min-width: 140px; }
    .key.tab, .key.caps {
        min-width: 42px;
        font-size: 0.58rem;
    }
    .key.shift {
        min-width: 46px;
        font-size: 0.58rem;
    }
    .key.backspace, .key.enter {
        min-width: 46px;
        font-size: 0.58rem;
    }

    .keyboard-row:nth-child(2) { transform: translateX(28px); }
    .keyboard-row:nth-child(3) { transform: translateX(35px); }
    .keyboard-row:nth-child(4) { transform: translateX(7px); }

    .form-group { flex-direction: column; }

    .exercise-selector select { min-width: 0; width: 100%; }
}

/* ========================================
   Beker (trophy) popup
======================================== */
.beker-overlay {
    position: fixed;
    inset: 0;
    background: rgba(7, 13, 26, 0.78);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.beker-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.beker-popup {
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-top: 3px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 2rem 1.8rem;
    text-align: center;
    max-width: 400px;
    width: 90%;
    position: relative;
    overflow: hidden;
    transform: scale(0.85) translateY(20px);
    opacity: 0;
    transition: transform 0.35s var(--ease-out), opacity 0.25s var(--ease-out);
    box-shadow: var(--shadow-lg);
}

.beker-overlay.active .beker-popup {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.beker-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.beker-image-wrapper {
    margin: 1.25rem 0;
    animation: bekerBounce 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.3s both;
}

.beker-image {
    width: 130px;
    height: auto;
    filter: drop-shadow(0 12px 28px rgba(251, 191, 36, 0.4));
}

@keyframes bekerBounce {
    0% { transform: scale(0) rotate(-12deg); opacity: 0; }
    100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

.beker-subtitle {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 0.4rem;
    letter-spacing: -0.01em;
}

.beker-encouragement {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.4rem;
}

.beker-close-btn {
    min-width: 160px;
    font-size: 1rem;
    padding: 0.75rem 2rem;
    animation: bekerBtnAppear 0.5s ease 0.6s both;
}

@keyframes bekerBtnAppear {
    0% { opacity: 0; transform: translateY(10px); }
    100% { opacity: 1; transform: translateY(0); }
}

.beker-confetti {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        radial-gradient(circle at 15% 20%, #fbbf24 2px, transparent 2px),
        radial-gradient(circle at 85% 15%, #34d399 2px, transparent 2px),
        radial-gradient(circle at 50% 10%, #f472b6 2px, transparent 2px),
        radial-gradient(circle at 25% 80%, #60a5fa 2px, transparent 2px),
        radial-gradient(circle at 75% 85%, #a78bfa 2px, transparent 2px),
        radial-gradient(circle at 10% 50%, #fb923c 2px, transparent 2px),
        radial-gradient(circle at 90% 50%, #38bdf8 2px, transparent 2px),
        radial-gradient(circle at 40% 90%, #4ade80 2px, transparent 2px),
        radial-gradient(circle at 60% 5%, #fca5a5 2px, transparent 2px);
    animation: confettiFade 2s ease 0.3s both;
}

@keyframes confettiFade {
    0% { opacity: 0; transform: scale(0.5); }
    50% { opacity: 1; }
    100% { opacity: 0.3; transform: scale(1.2); }
}

/* ========================================
   Bekers display (Student page)
======================================== */
.bekers-section {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
}

.bekers-section h2 {
    font-family: var(--font-display);
    text-align: center;
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.bekers-overview {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.beker-count-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 0.9rem 1.25rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    min-width: 90px;
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.beker-count-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
}

.beker-count-card img {
    width: 42px;
    height: auto;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.4));
}

.beker-count-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.beker-count-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.bekers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 0.75rem;
}

.beker-card {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.beker-card:hover {
    background: var(--bg-hover);
    border-color: var(--border-strong);
}

.beker-card img {
    width: 32px;
    height: auto;
    flex: 0 0 auto;
}

.beker-card-info {
    flex: 1;
    min-width: 0;
}

.beker-card-sentence {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.beker-card-accuracy {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.15rem;
    font-weight: 700;
}

.no-bekers {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
    font-size: 0.95rem;
}

/* ========================================
   Inline-style component refinements
   (these classes appear in PHP <style> blocks; refining here too
   so all pages benefit from the system without per-page edits)
======================================== */
.user-header {
    background: var(--bg-card) !important;
    border-bottom: 1px solid var(--border-soft) !important;
    border: 1px solid var(--border-soft) !important;
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
}

.user-avatar {
    background: var(--primary) !important;
    color: #04141f !important;
    box-shadow: 0 1px 0 rgba(255,255,255,0.18) inset;
    font-family: var(--font-display);
    letter-spacing: -0.02em;
}

.user-details h2 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.logout-btn {
    border: 1px solid var(--border-soft) !important;
    background: var(--bg-dark) !important;
    color: var(--text-secondary) !important;
    font-family: var(--font-display);
    font-weight: 700 !important;
    border-radius: var(--radius-md) !important;
    transition: all var(--transition-fast);
}

.logout-btn:hover {
    border-color: var(--error) !important;
    color: var(--error) !important;
    background: var(--error-bg) !important;
}

/* .welcome-banner styling lives in oefening.php so the page can tune its own
   header strip. The shared system only needs to make sure no leftover
   gradient/radial overlay leaks in from older revisions. */
.welcome-banner h1 {
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: -0.015em;
    color: var(--text-primary);
}

.final-stat {
    background: var(--bg-dark) !important;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md) !important;
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.final-stat:hover {
    border-color: var(--border-strong);
    transform: translateY(-1px);
}

.final-stat-value {
    font-family: var(--font-display);
    font-variant-numeric: tabular-nums;
}

.final-stat-label {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.exercise-preview {
    background: var(--bg-dark) !important;
    border: 1px solid var(--border-soft) !important;
    border-left: 3px solid var(--primary) !important;
    border-radius: var(--radius-md) !important;
}

.exercise-preview-title {
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: -0.01em;
}

.warning-message {
    background: rgba(248, 113, 113, 0.10) !important;
    border: 1px solid rgba(248, 113, 113, 0.35) !important;
    color: var(--error-light) !important;
    border-radius: var(--radius-md) !important;
    backdrop-filter: blur(8px);
}

/* Login page refinements (login.php uses .login-card, .code-input, etc.) */
.login-container {
    background: var(--bg-base) !important;
}

.login-card {
    background: var(--bg-card) !important;
    border: 1px solid var(--border-soft);
    border-top: 3px solid var(--primary) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-lg) !important;
}

.login-logo {
    font-family: var(--font-display) !important;
    font-weight: 800 !important;
    letter-spacing: -0.03em !important;
    color: var(--text-primary) !important;
}

.code-input {
    font-family: var(--font-mono) !important;
    background: var(--bg-dark) !important;
    border: 1px solid var(--border-soft) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-md) !important;
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.4) !important;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast) !important;
}

.code-input:focus {
    border-color: var(--primary) !important;
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.4), var(--ring-focus) !important;
}

.login-btn {
    font-family: var(--font-display) !important;
    background: var(--primary) !important;
    color: #04141f !important;
    border-radius: var(--radius-md) !important;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.18) inset !important;
    transition: background var(--transition-fast), transform var(--transition-fast) !important;
}

.login-btn:hover {
    background: var(--primary-light) !important;
    transform: translateY(-1px) !important;
}

.error-message {
    background: rgba(248, 113, 113, 0.12) !important;
    color: var(--error-light) !important;
    border: 1px solid rgba(248, 113, 113, 0.35);
    border-radius: var(--radius-md) !important;
}

.login-hint span {
    color: var(--primary-light) !important;
}

/* Reduced motion respect */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}