/**
 * xynap-present.css — Presentation Toolkit Styles
 *
 * CSS-Variablen (überschreibbar):
 *   --xp-gold, --xp-gold-light, --xp-gold-dim
 *   --xp-blue, --xp-bg, --xp-text, --xp-text-muted
 *
 * HTML-Klassen:
 *   .xp-page          Fullscreen-Sektion (scroll-snap)
 *   .xp-content        Inhalts-Container (fade in/out)
 *   .xp-curtain        Öffnungsvorhang
 *   .xp-hero-bg        Hintergrundbild (fade-in)
 *   .xp-particle       Ambient-Partikel
 *   .xp-lang-btn       Sprachumschalter
 *   .xp-nav-dot        Section-Navigation Punkt
 *   .xp-dissolving     Sprach-Wechsel: Text verweht
 *   .xp-materializing  Sprach-Wechsel: Text erscheint
 *   .xp-in-view        Sektion ist sichtbar
 *   .xp-fading-out     Sektion verlässt Viewport
 *   .xp-speaking       Sektion wird vorgelesen
 */

:root {
    --xp-gold: #d4a853;
    --xp-gold-light: #f0d68a;
    --xp-gold-dim: rgba(212,168,83,0.12);
    --xp-blue: #4a9eff;
    --xp-bg: #050508;
    --xp-text: #e8e6e0;
    --xp-text-muted: #7a7870;
}

/* ── Curtain ──────────────────────────────────────── */
.xp-curtain {
    position: fixed; inset: 0; background: #000; z-index: 9999;
    opacity: 1; transition: opacity 2.5s ease; pointer-events: none;
}
.xp-curtain.open { opacity: 0; }

/* ── Vignette ─────────────────────────────────────── */
.xp-vignette {
    position: fixed; inset: 0; pointer-events: none; z-index: 50;
    box-shadow: inset 0 0 150px 60px rgba(0,0,0,0.5);
}

/* ── Progress Bar ─────────────────────────────────── */
#xp-progress {
    position: fixed; top: 0; left: 0; height: 2px; z-index: 1000;
    background: linear-gradient(90deg, var(--xp-gold), var(--xp-blue));
    width: 0%; transition: width 0.3s; opacity: 0.7;
}

/* ── Particles ────────────────────────────────────── */
#xp-particles { position: fixed; inset: 0; pointer-events: none; z-index: 1; overflow: hidden; }
.xp-particle {
    position: absolute; border-radius: 50%; opacity: 0;
    animation: xp-float linear infinite;
}
@keyframes xp-float {
    0%   { opacity: 0; transform: translateY(100vh) scale(0.5); }
    8%   { opacity: 0.5; }
    92%  { opacity: 0.4; }
    100% { opacity: 0; transform: translateY(-5vh) scale(1); }
}

/* ── Pages ────────────────────────────────────────── */
html { scroll-snap-type: y proximity; }
.xp-page {
    min-height: 100vh; display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 5rem 2rem; position: relative; text-align: center;
    scroll-snap-align: center;
}

.xp-content {
    position: relative; z-index: 2; max-width: 760px; width: 100%;
    opacity: 0; transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}
.xp-page.xp-in-view .xp-content { opacity: 1; transform: translateY(0); }
.xp-page.xp-fading-out .xp-content { opacity: 0.12; transform: scale(0.97); }

/* ── Dissolve / Materialize (i18n switch) ─────────── */
.xp-dissolving { animation: xp-dissolve 0.6s ease forwards; }
.xp-materializing { animation: xp-materialize 0.7s ease forwards; }
@keyframes xp-dissolve {
    0%   { opacity: 1; filter: blur(0); transform: translateY(0); }
    100% { opacity: 0; filter: blur(8px); transform: translateY(-15px); }
}
@keyframes xp-materialize {
    0%   { opacity: 0; filter: blur(8px); transform: translateY(15px); }
    100% { opacity: 1; filter: blur(0); transform: translateY(0); }
}

/* ── Speaking ─────────────────────────────────────── */
.xp-page.xp-speaking::after {
    content: ''; position: absolute; left: 50%; top: 10%; bottom: 10%;
    width: 2px; transform: translateX(-50%);
    background: linear-gradient(to bottom, transparent, var(--xp-gold), transparent);
    opacity: 0; animation: xp-speakpulse 2s ease-in-out infinite;
}
@keyframes xp-speakpulse { 0%,100% { opacity: .15; } 50% { opacity: .5; } }

/* ── Hero BG ──────────────────────────────────────── */
.xp-hero-bg {
    position: absolute; inset: 0; opacity: 0; z-index: 0;
    background-size: cover; background-position: center;
    transition: opacity 3s ease;
}
.xp-hero-bg.loaded { opacity: 0.3; }

/* ── Language Switcher ────────────────────────────── */
.xp-lang-bar {
    position: fixed; top: 1rem; right: 1.5rem; z-index: 200;
    display: flex; gap: 0.5rem;
}
.xp-lang-btn {
    background: none; border: 1px solid rgba(255,255,255,0.1);
    color: var(--xp-text-muted); font-size: 0.75rem;
    padding: 0.3rem 0.6rem; border-radius: 4px; cursor: pointer;
    transition: all 0.3s; text-transform: uppercase;
    letter-spacing: 0.08em; font-family: inherit;
}
.xp-lang-btn:hover { border-color: var(--xp-gold); color: var(--xp-gold); }
.xp-lang-btn.active {
    background: var(--xp-gold); color: var(--xp-bg);
    border-color: var(--xp-gold); font-weight: 600;
}

/* ── Section Nav ──────────────────────────────────── */
#xp-section-nav {
    position: fixed; left: 1.5rem; top: 50%; transform: translateY(-50%);
    z-index: 200; display: flex; flex-direction: column; gap: 8px;
    opacity: 0; transition: opacity 0.8s;
}
#xp-section-nav.visible { opacity: 1; }
.xp-nav-dot {
    width: 8px; height: 8px; border-radius: 50%; padding: 0;
    background: rgba(255,255,255,0.12); border: none; cursor: pointer;
    transition: all 0.4s; position: relative;
}
.xp-nav-dot:hover { background: rgba(212,168,83,0.4); transform: scale(1.4); }
.xp-nav-dot.active { background: var(--xp-gold); box-shadow: 0 0 8px rgba(212,168,83,0.3); }
.xp-nav-dot-label {
    position: absolute; left: 22px; white-space: nowrap;
    font-size: 0.65rem; color: var(--xp-text-muted);
    opacity: 0; transition: opacity 0.2s; pointer-events: none;
}
.xp-nav-dot:hover .xp-nav-dot-label { opacity: 1; }

/* ── Controls ─────────────────────────────────────── */
.xp-controls {
    position: fixed; bottom: 2rem; right: 2rem; z-index: 200;
    display: flex; flex-direction: column; gap: 0.7rem;
}
.xp-ctrl-btn {
    width: 50px; height: 50px; border-radius: 50%;
    border: 1px solid rgba(212,168,83,0.2);
    background: rgba(5,5,8,0.8); backdrop-filter: blur(16px);
    color: var(--xp-gold); font-size: 1.2rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.4s; opacity: 0; transform: translateY(20px);
}
.xp-ctrl-btn.visible { opacity: 1; transform: translateY(0); }
.xp-ctrl-btn:hover { background: rgba(212,168,83,0.12); border-color: var(--xp-gold); }
.xp-ctrl-btn.active { background: var(--xp-gold); color: var(--xp-bg); }

/* ── Auto-Scroll Status ──────────────────────────── */
#xp-as-status {
    position: fixed; bottom: 2rem; left: 2rem; font-size: 0.7rem;
    color: var(--xp-text-muted); letter-spacing: 0.15em;
    text-transform: uppercase; opacity: 0; transition: opacity 0.8s; z-index: 200;
}
#xp-as-status.on { opacity: 0.5; }

/* ── Offer Dialog ─────────────────────────────────── */
.xp-offer-overlay {
    position: fixed; inset: 0; z-index: 9000;
    background: rgba(0,0,0,0.7); backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none; transition: opacity 0.8s ease;
}
.xp-offer-overlay.visible { opacity: 1; pointer-events: auto; }
.xp-offer-dialog {
    background: rgba(15,15,22,0.95); border: 1px solid rgba(212,168,83,0.2);
    border-radius: 16px; padding: 2.5rem 3rem; text-align: center;
    max-width: 420px; transform: scale(0.9); transition: transform 0.5s ease;
}
.xp-offer-overlay.visible .xp-offer-dialog { transform: scale(1); }
.xp-offer-title { font-size: 1.3rem; color: var(--xp-text); margin-bottom: 2rem; line-height: 1.6; }
.xp-offer-buttons { display: flex; flex-direction: column; gap: 0.8rem; }
.xp-offer-btn {
    background: none; border: 1px solid rgba(212,168,83,0.25);
    color: var(--xp-text); padding: 0.8rem 1.5rem; border-radius: 8px;
    font-family: inherit; font-size: 0.95rem; cursor: pointer; transition: all 0.3s;
}
.xp-offer-btn:hover { border-color: var(--xp-gold); color: var(--xp-gold); }
.xp-offer-btn-primary { background: var(--xp-gold); color: var(--xp-bg); border-color: var(--xp-gold); font-weight: 600; }
.xp-offer-btn-primary:hover { background: var(--xp-gold-light); }
.xp-offer-btn-dismiss { border-color: transparent; color: var(--xp-text-muted); font-size: 0.85rem; }

/* ── Keyframes ────────────────────────────────────── */
@keyframes xp-dotglow {
    0%,100% { opacity: 0.3; box-shadow: none; }
    50% { opacity: 1; box-shadow: 0 0 8px var(--xp-gold); }
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 640px) {
    .xp-controls { bottom: 1rem; right: 1rem; }
    .xp-ctrl-btn { width: 42px; height: 42px; font-size: 1rem; }
    .xp-lang-bar { top: 0.5rem; right: 0.5rem; gap: 0.3rem; }
    .xp-lang-btn { padding: 0.2rem 0.4rem; font-size: 0.65rem; }
    #xp-section-nav { left: 0.5rem; }
    .xp-nav-dot { width: 6px; height: 6px; }
    .xp-vignette { box-shadow: inset 0 0 80px 30px rgba(0,0,0,0.5); }
}