/* =============================================================
   Kheper — Feuille de styles principale
   #0D0A05 · or #C9A84C/#E8C97A · sable #F2E8D0
   lapis #1B3A6B · turquoise #148F77
   Cinzel (titres) · Crimson Pro (texte)
   ============================================================= */

/* ── Police hiéroglyphique (auto-chargée si présente) ────────
   Télécharger depuis https://fonts.google.com/noto/specimen/Noto+Sans+Egyptian+Hieroglyphs
   Placer dans /public/assets/fonts/NotoSansEgyptianHieroglyphs-Regular.ttf
   ─────────────────────────────────────────────────────────── */
@font-face {
    font-family: 'Noto Sans Egyptian Hieroglyphs';
    src: local('Noto Sans Egyptian Hieroglyphs'),
         url('/public/assets/fonts/NotoSansEgyptianHieroglyphs-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
    unicode-range: U+13000-U+1342F, U+13430-U+1343F;
}

/* ── Variables ──────────────────────────────────────────────── */
:root {
    --bg:           #0D0A05;
    --bg-2:         #12100A;
    --bg-card:      #1A1710;
    --bg-card-h:    #221F16;
    --bg-modal:     #16130C;
    --border:       #2E2818;
    --border-light: #3D3520;

    --gold:         #C9A84C;
    --gold-light:   #E8C97A;
    --gold-dim:     #7A6330;
    --gold-glow:    rgba(201,168,76,0.18);

    --sand:         #F2E8D0;
    --sand-dim:     #A89878;

    --lapis:        #1B3A6B;
    --lapis-light:  #2A5099;
    --turquoise:    #148F77;
    --turquoise-light:#1CB89A;

    --text:         #E8DCC8;
    --text-muted:   #6E6454;
    --text-dim:     #9A8E7C;

    --radius:       8px;
    --radius-sm:    4px;
    --transition:   0.22s ease;
    --font-title:      'Cinzel', Georgia, serif;
    --font-body:       'Crimson Pro', Georgia, serif;
    /* Pile de polices pour les glyphes Unicode U+13000 :
       1. Noto Egyptian (auto-hébergé, si téléchargé)
       2. Segoe UI Historic (Windows 10/11)
       3. Noto Sans Symbols2 (Android, certains Linux)
       4. Serif générique en dernier recours */
    --font-hieroglyph: 'Noto Sans Egyptian Hieroglyphs',
                       'Segoe UI Historic',
                       'Noto Sans Symbols2',
                       serif;
}

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

html { scroll-behavior: smooth; }

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 1.05rem;
    line-height: 1.6;
    min-height: 100vh;
    background-image:
        radial-gradient(ellipse 100% 40% at 50% 0%,
            rgba(27,58,107,0.15) 0%, transparent 60%),
        radial-gradient(ellipse 60% 30% at 80% 100%,
            rgba(20,143,119,0.06) 0%, transparent 50%);
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13,10,5,0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    height: 56px;
    gap: 1rem;
}

.nav-brand {
    font-family: var(--font-title);
    font-size: 1.2rem;
    letter-spacing: 0.3em;
    color: var(--gold);
    text-decoration: none;
    text-transform: uppercase;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-family: var(--font-title);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--gold);
    background: var(--gold-glow);
}

.nav-plan {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-title);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
}

.badge-free      { color: var(--text-muted); }
.badge-privilege { color: var(--turquoise); }

/* ── Hero header ─────────────────────────────────────────────── */
.hero {
    position: relative;
    text-align: center;
    padding: 3.5rem 1.5rem 2rem;
    overflow: hidden;
}

/* Bandeau de hiéroglyphes en fond */
.hero-glyphs-bg {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.8rem;
    letter-spacing: 0.4em;
    color: rgba(201,168,76,0.04);
    pointer-events: none;
    user-select: none;
    white-space: nowrap;
    overflow: hidden;
}

/* Scarabée animé */
.hero-scarab {
    font-size: 4rem;
    display: inline-block;
    margin-bottom: 1rem;
    animation: scarab-float 3.6s ease-in-out infinite;
    filter: drop-shadow(0 0 18px rgba(201,168,76,0.5));
    position: relative;
    z-index: 1;
}

@keyframes scarab-float {
    0%, 100% { transform: translateY(0px) rotate(-2deg); }
    30%       { transform: translateY(-10px) rotate(1deg); }
    60%       { transform: translateY(-5px) rotate(-1deg); }
}

.hero-title {
    font-family: var(--font-title);
    font-size: clamp(2.2rem, 6vw, 4rem);
    letter-spacing: 0.4em;
    color: var(--gold);
    text-transform: uppercase;
    line-height: 1;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--text-dim);
    margin-top: 0.5rem;
    letter-spacing: 0.08em;
    font-style: italic;
    position: relative;
    z-index: 1;
}

/* ── Bandeau de hiéroglyphes ─────────────────────────────────── */
.glyph-banner {
    overflow: hidden;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: linear-gradient(90deg,
        var(--bg) 0%,
        rgba(201,168,76,0.03) 50%,
        var(--bg) 100%);
    padding: 0.6rem 0;
    margin: 1.5rem 0;
    position: relative;
}

.glyph-banner-track {
    display: flex;
    gap: 0.6rem;
    width: max-content;
    animation: banner-scroll 30s linear infinite;
    font-size: 1.6rem;
    color: var(--gold-dim);
    opacity: 0.55;
    font-family: var(--font-hieroglyph);
}

.glyph-banner-track:hover { animation-play-state: paused; }

@keyframes banner-scroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.glyph-banner::before,
.glyph-banner::after {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    width: 60px;
    z-index: 2;
    pointer-events: none;
}
.glyph-banner::before {
    left: 0;
    background: linear-gradient(90deg, var(--bg), transparent);
}
.glyph-banner::after {
    right: 0;
    background: linear-gradient(-90deg, var(--bg), transparent);
}

/* ── Barre XP ────────────────────────────────────────────────── */
.xp-section {
    max-width: 860px;
    margin: 0 auto 2.5rem;
    padding: 0 1.5rem;
}

.xp-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 0.4rem;
}

.xp-label {
    font-family: var(--font-title);
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    color: var(--gold-dim);
    text-transform: uppercase;
}

.xp-value {
    font-family: var(--font-title);
    font-size: 0.8rem;
    color: var(--gold);
    letter-spacing: 0.1em;
}

.xp-track {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.xp-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--gold-dim), var(--gold), var(--gold-light));
    border-radius: 3px;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.xp-bar::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 30px; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3));
    animation: xp-shimmer 2s ease-in-out infinite;
}

@keyframes xp-shimmer {
    0%, 100% { opacity: 0; }
    50%       { opacity: 1; }
}

/* ── Section titre ───────────────────────────────────────────── */
.section-header {
    max-width: 860px;
    margin: 0 auto 1.5rem;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.section-title {
    font-family: var(--font-title);
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    color: var(--gold-dim);
    text-transform: uppercase;
    white-space: nowrap;
}

.section-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-light), transparent);
}

/* ── Grille des signes ───────────────────────────────────────── */
.alphabet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.85rem;
    max-width: 860px;
    margin: 0 auto 4rem;
    padding: 0 1.5rem;
}

.glyph-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 0.75rem 0.85rem;
    text-align: center;
    cursor: pointer;
    position: relative;
    transition:
        border-color var(--transition),
        background var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
    user-select: none;
    overflow: hidden;
}

.glyph-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center top,
        rgba(201,168,76,0.08) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.glyph-card:hover,
.glyph-card:focus-visible {
    border-color: var(--gold-dim);
    background: var(--bg-card-h);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0,0,0,0.5), 0 0 0 1px rgba(201,168,76,0.12);
    outline: none;
}

.glyph-card:hover::before,
.glyph-card:focus-visible::before { opacity: 1; }

.glyph-card:active { transform: translateY(0); }

/* Badge état appris */
.glyph-card.learned::after {
    content: '✓';
    position: absolute;
    top: 5px; right: 7px;
    font-size: 0.65rem;
    color: var(--turquoise);
    font-family: var(--font-title);
}

.glyph-unicode {
    font-size: 2.4rem;
    line-height: 1;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 2px 6px rgba(201,168,76,0.2));
    display: block;
    font-family: var(--font-hieroglyph);
}

.glyph-translit {
    font-family: var(--font-title);
    font-size: 1rem;
    color: var(--gold);
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 0.2rem;
}

.glyph-gardiner {
    font-family: var(--font-title);
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    color: var(--text-muted);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.3rem;
}

.glyph-nom {
    font-size: 0.72rem;
    color: var(--text-dim);
    line-height: 1.3;
}

/* ── Modal ───────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(6, 4, 2, 0.82);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-modal);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow:
        0 0 0 1px rgba(201,168,76,0.06),
        0 24px 80px rgba(0,0,0,0.7);
    transform: translateY(16px) scale(0.98);
    transition: transform 0.25s cubic-bezier(0.34,1.4,0.64,1);
}

.modal-overlay.open .modal {
    transform: translateY(0) scale(1);
}

/* Liseré or en haut */
.modal::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent, var(--gold), var(--gold-light), var(--gold), transparent);
}

.modal-close {
    position: absolute;
    top: 0.9rem; right: 1rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.3rem;
    cursor: pointer;
    line-height: 1;
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
    z-index: 1;
}
.modal-close:hover { color: var(--text); background: var(--border); }

/* Hero du modal */
.modal-hero {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem 2rem 1.5rem;
    background: linear-gradient(135deg,
        rgba(201,168,76,0.05) 0%, transparent 60%);
    border-bottom: 1px solid var(--border);
}

.modal-glyph {
    font-size: 5rem;
    line-height: 1;
    filter: drop-shadow(0 4px 12px rgba(201,168,76,0.3));
    flex-shrink: 0;
    font-family: var(--font-hieroglyph);
}

.modal-hero-info {
    flex: 1;
    min-width: 0;
}

.modal-translit {
    font-family: var(--font-title);
    font-size: 2rem;
    color: var(--gold);
    line-height: 1;
    margin-bottom: 0.2rem;
}

.modal-nom {
    font-size: 0.95rem;
    color: var(--text-dim);
    font-style: italic;
    margin-bottom: 0.35rem;
}

.modal-gardiner-badge {
    display: inline-block;
    background: var(--lapis);
    color: #8AAEE0;
    font-family: var(--font-title);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    padding: 0.2rem 0.6rem;
    border-radius: 99px;
    text-transform: uppercase;
}

/* Corps du modal */
.modal-body {
    padding: 1.5rem 2rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.modal-row {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.modal-row-label {
    font-family: var(--font-title);
    font-size: 0.62rem;
    letter-spacing: 0.25em;
    color: var(--gold-dim);
    text-transform: uppercase;
}

.modal-row-value {
    font-size: 1rem;
    color: var(--text);
    line-height: 1.5;
}

.modal-row-value .ipa {
    display: inline-block;
    background: rgba(20,143,119,0.12);
    border: 1px solid rgba(20,143,119,0.25);
    color: var(--turquoise-light);
    font-family: monospace;
    font-size: 0.9rem;
    padding: 0.1rem 0.45rem;
    border-radius: var(--radius-sm);
    margin-left: 0.4rem;
}

/* Exemple de mot */
.modal-exemple {
    background: rgba(201,168,76,0.04);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 0.85rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.modal-exemple-glyph {
    font-size: 1.7rem;
    line-height: 1;
    flex-shrink: 0;
    font-family: var(--font-hieroglyph);
}

.modal-exemple-text {
    flex: 1;
    min-width: 0;
}

.modal-exemple-translit {
    font-family: var(--font-title);
    font-size: 0.85rem;
    color: var(--gold);
    letter-spacing: 0.05em;
}

.modal-exemple-fr {
    font-size: 0.88rem;
    color: var(--text-dim);
    font-style: italic;
}

/* Description */
.modal-description {
    font-size: 0.92rem;
    color: var(--text-dim);
    line-height: 1.65;
    border-left: 2px solid var(--border-light);
    padding-left: 0.85rem;
    font-style: italic;
}

/* Bouton audio */
.btn-audio {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    background: transparent;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    color: var(--text-dim);
    font-family: var(--font-title);
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    padding: 0.55rem 1rem;
    cursor: pointer;
    transition: all var(--transition);
    width: fit-content;
}

.btn-audio:hover {
    border-color: var(--gold-dim);
    color: var(--gold);
    background: var(--gold-glow);
}

.btn-audio.playing {
    border-color: var(--turquoise);
    color: var(--turquoise-light);
    background: rgba(20,143,119,0.08);
}

.btn-audio.loading {
    opacity: 0.6;
    cursor: wait;
}

.btn-audio-icon {
    font-size: 1.1rem;
    line-height: 1;
}

/* ── Pied de page ─────────────────────────────────────────────── */
.footer {
    border-top: 1px solid var(--border);
    padding: 2rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
}

.footer-glyphs {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    opacity: 0.3;
    letter-spacing: 0.3em;
}

/* ── Utilitaires ─────────────────────────────────────────────── */
.sr-only {
    position: absolute; width: 1px; height: 1px;
    overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 600px) {
    .nav-links { display: none; }
    .alphabet-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 0.6rem; }
    .glyph-unicode { font-size: 2rem; }
    .modal-hero { flex-direction: column; text-align: center; }
    .modal-hero-info { text-align: center; }
    .modal-body { padding: 1.25rem 1.25rem 1.5rem; }
    .hero-title { letter-spacing: 0.2em; }
}

@media (max-width: 400px) {
    .alphabet-grid { grid-template-columns: repeat(4, 1fr); }
}