/* ═══════════════════════════════════════════════════════════════
   AudioGuías · CSS Visitante
   Identidad: Museo Frida Kahlo — oscuro, dorado, editorial
   Fuentes: Cormorant Garamond (display) + DM Sans (body)
═══════════════════════════════════════════════════════════════ */

/* ── Variables ───────────────────────────────────────────────── */
:root {
    --azul:      #1B4F8A;
    --azul-dark: #12366A;
    --gold:      #C9A84C;
    --gold-light:#E8C97A;
    --verde:     #4A7C59;
    --rojo:      #8B1A1A;
    --bg-dark:   #0D1B2A;
    --bg:        #111E2E;
    --card:      #162033;
    --border:    #243450;
    --text:      #F0E8D8;
    --text-muted:#8A9BB5;
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body:    'DM Sans', system-ui, sans-serif;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ── Barra superior ──────────────────────────────────────────── */
.top-bar {
    position: sticky;
    top: 0;
    z-index: 30;
    height: 56px;
    background: rgba(13, 27, 42, 0.95);
    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 1rem;
    padding-top: var(--safe-top);
}
.top-bar__left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}
.top-bar__title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}
.top-bar__right { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }

/* ── Botones base ────────────────────────────────────────────── */
.btn-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    flex-shrink: 0;
}
.btn-icon:active { transform: scale(0.93); background: var(--border); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
       padding: 0.8rem 1.25rem; border-radius: 12px; font-family: var(--font-body);
       font-size: 0.9rem; font-weight: 600; cursor: pointer; text-decoration: none;
       border: none; transition: all 0.2s; }
.btn--primary { background: linear-gradient(135deg, var(--azul), var(--azul-dark));
                border: 1px solid var(--gold); color: var(--gold); width: 100%; }
.btn--ghost { background: transparent; border: 1px solid var(--border); color: var(--text-muted); width: 100%; }
.btn:active { transform: scale(0.97); }

/* ── Selector de idioma ──────────────────────────────────────── */
.lang-toggle {
    height: 32px;
    padding: 0 0.75rem;
    border-radius: 20px;
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--gold);
    font-size: 0.75rem;
    font-weight: 700;
    font-family: var(--font-body);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: all 0.2s;
    letter-spacing: 0.02em;
}
.lang-toggle:active { background: var(--border); }

/* ── Contenido principal ─────────────────────────────────────── */
.main-content {
    min-height: calc(100vh - 56px);
    padding-bottom: calc(1.5rem + var(--safe-bottom));
}

/* ── Timer de sesión ─────────────────────────────────────────── */
.session-timer {
    position: fixed;
    bottom: calc(1rem + var(--safe-bottom));
    right: 1rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    z-index: 20;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.session-timer.timer--warning { color: #D4742A; border-color: #D4742A; }
.session-timer.timer--danger  { color: var(--rojo); border-color: var(--rojo);
                                  animation: pulse-timer 1s ease-in-out infinite; }
@keyframes pulse-timer {
    0%, 100% { box-shadow: 0 4px 16px rgba(139,26,26,0.2); }
    50%       { box-shadow: 0 4px 24px rgba(139,26,26,0.5); }
}

/* ── Modal ───────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 100;
    display: flex;
    align-items: flex-end;
    padding: 1rem;
    padding-bottom: calc(1rem + var(--safe-bottom));
}
.modal-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 1.75rem 1.5rem;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.warning-modal .warning-icon { font-size: 2.5rem; text-align: center; }
.warning-modal h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    text-align: center;
    color: var(--text);
}
.warning-modal p { font-size: 0.875rem; color: var(--text-muted); text-align: center; }

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Línea dorada top ────────────────────────────────────────── */
body::before {
    content: '';
    display: block;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--azul), var(--gold), var(--rojo));
    z-index: 999;
    pointer-events: none;
}

/* ── Utilidades ──────────────────────────────────────────────── */
.text-gold { color: var(--gold); }
.font-display { font-family: var(--font-display); }

/* ── Animaciones de entrada ──────────────────────────────────── */
@keyframes fade-up {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fade-up 0.4s ease forwards; }
.fade-up-delay-1 { animation-delay: 0.1s; opacity: 0; animation-fill-mode: forwards; animation-name: fade-up; animation-duration: 0.4s; }
.fade-up-delay-2 { animation-delay: 0.2s; opacity: 0; animation-fill-mode: forwards; animation-name: fade-up; animation-duration: 0.4s; }
.fade-up-delay-3 { animation-delay: 0.3s; opacity: 0; animation-fill-mode: forwards; animation-name: fade-up; animation-duration: 0.4s; }

/* ── Responsive tablet ───────────────────────────────────────── */
@media (min-width: 640px) {
    .main-content { max-width: 600px; margin: 0 auto; }
    .top-bar { max-width: 600px; margin: 0 auto; left: 0; right: 0; transform: none; width: 100%; }
    .session-timer { right: calc(50% - 280px); }
    .area-panel { max-width: 600px; left: 50%; transform: translateX(-50%) translateY(100%); }
    .area-panel.open { transform: translateX(-50%) translateY(0); }
}