*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    overflow-x: clip;
}

body {
    overflow-x: clip;
}

body {
    font-family: var(--font-sans);
    background: var(--paper-gradient, var(--cream));
    background-attachment: fixed;
    color: var(--ink);
    line-height: 1.7;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-speed, 0.3s) ease, color var(--transition-speed, 0.3s) ease;
}

/* ── Smooth Page Entrance & Component Transitions ── */
main, .page, .content-container {
    animation: cosyPageFadeIn 0.35s ease-out;
}

@keyframes cosyPageFadeIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ── Base Typography ────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
}

p {
    margin: 0;
}

/* ── Theme Overrides ────────────────────────────────── */
body.theme-paper {
    background: var(--paper-bg);
    color: var(--paper-txt);
}

body.theme-contrast {
    background: var(--contrast-bg);
    color: var(--contrast-txt);
}

/* ── Projector & Classroom Presentation Mode ───────── */
body.mode-projector, body.theme-projector {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 1.18rem !important;
    line-height: 1.8 !important;
}

body.mode-projector main,
body.mode-projector .page,
body.mode-projector .container,
body.mode-projector .content-container,
body.theme-projector main,
body.theme-projector .page,
body.theme-projector .container,
body.theme-projector .content-container {
    max-width: 1400px !important;
    width: 95vw !important;
}

body.mode-projector h1, body.theme-projector h1 { font-size: 2.8rem !important; font-weight: 800 !important; color: #000000 !important; }
body.mode-projector h2, body.theme-projector h2 { font-size: 2.2rem !important; font-weight: 800 !important; color: #000000 !important; }
body.mode-projector h3, body.theme-projector h3 { font-size: 1.7rem !important; font-weight: 700 !important; color: #000000 !important; }

body.mode-projector th, body.mode-projector td,
body.theme-projector th, body.theme-projector td {
    font-size: 1.15rem !important;
    padding: 14px 20px !important;
    border: 2px solid #111111 !important;
    color: #000000 !important;
}

body.mode-projector .card,
body.mode-projector .tool-card,
body.mode-projector .game-card,
body.mode-projector .ref-card,
body.mode-projector .round-block,
body.mode-projector .vocab-card,
body.theme-projector .card,
body.theme-projector .tool-card,
body.theme-projector .game-card,
body.theme-projector .ref-card,
body.theme-projector .round-block,
body.theme-projector .vocab-card {
    border: 2px solid #111111 !important;
    background: #ffffff !important;
    color: #000000 !important;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12) !important;
}

body.mode-projector .projector-badge-indicator {
    display: inline-flex !important;
}

/* Utility visibility classes */
.hidden { display: none !important; }
.text-center { text-align: center !important; }
.relative { position: relative !important; }
.inline-block { display: inline-block !important; }
.full-width { width: 100% !important; }

/* Custom Accessible Focus Ring using site palette */
:focus-visible {
    outline: 3px solid var(--teal);
    outline-offset: 3px;
    border-radius: var(--r-sm);
}

/* Specific focus styling for cards and pills and larger buttons */
.qs-card:focus-visible, .lang-pill:focus-visible, .cat-pill:focus-visible {
    outline: 3px solid var(--teal);
    outline-offset: 3px;
    border-radius: var(--r-lg);
}

.mc-opt:focus-visible, .tf-btn:focus-visible, .btn-start:focus-visible, .btn-primary:focus-visible, .btn-secondary:focus-visible, .wheel-btn:focus-visible {
    outline: 3px solid var(--teal);
    outline-offset: 3px;
    border-radius: 100px;
}

/* Gold-standard prefers-reduced-motion resets to instantly fallback animations and transitions */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-delay: -1ms !important;
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        background-attachment: initial !important;
        scroll-behavior: auto !important;
        transition-duration: 1ms !important;
        transition-delay: -1ms !important;
    }
}