/* Chronicle Intro Player v0.2.0 — fully responsive */

/* ─── Base Tokens ─────────────────────────────────────────── */
:root {
    /* Colors */
    --bg-dark: #0a0a0a;
    --bg-card: rgba(15, 15, 20, 0.88);
    --text-primary: #f0e6d3;
    --text-secondary: rgba(240, 230, 211, 0.65);
    --accent: #c9a227;
    --accent-dim: rgba(201, 162, 39, 0.25);
    --border: rgba(201, 162, 39, 0.12);
    --shadow: 0 8px 32px rgba(0,0,0,0.5);

    /* Responsive type scale — clamp(min, preferred, max) */
    --fs-hero: clamp(2rem, 5vw, 4rem);
    --fs-title: clamp(1.2rem, 3vw, 2.2rem);
    --fs-subtitle: clamp(0.8rem, 2vw, 1.2rem);
    --fs-body: clamp(0.85rem, 1.8vw, 1.15rem);
    --fs-caption: clamp(0.7rem, 1.2vw, 0.9rem);
    --fs-clock: clamp(1.6rem, 4vw, 3.5rem);
    --fs-counter: clamp(0.65rem, 1.2vw, 0.9rem);

    /* Spacing scale */
    --sp-xs: clamp(4px, 0.8vw, 8px);
    --sp-sm: clamp(8px, 1.2vw, 16px);
    --sp-md: clamp(12px, 2vw, 24px);
    --sp-lg: clamp(16px, 3vw, 40px);
    --sp-xl: clamp(24px, 4vw, 60px);

    /* Control sizes */
    --btn-size: clamp(32px, 5vw, 52px);
    --btn-icon: clamp(14px, 2.5vw, 22px);

    /* Digest panel width */
    --digest-max-w: min(48vw, 620px);
    --digest-padding: clamp(16px, 2.5vw, 36px);
}

/* ─── Player Container ─────────────────────────────────────── */
.intro-player {
    width: 100vw;
    height: 100dvh;
    position: relative;
    background: var(--bg-dark);
    overflow: hidden;
    display: flex;
    align-items: stretch;
}

/* ─── Canvas Background Layer ──────────────────────────────── */
#bgCanvas {
    position: absolute;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* Fallback gradient behind canvas */
.intro-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, #1a1520 0%, #0a0a0a 70%);
    z-index: -1;
}

.intro-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(201, 162, 39, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(201, 162, 39, 0.02) 0%, transparent 50%);
}

/* ─── Content Layout: left (text) + right (visuals) ─────── */
.intro-content {
    position: absolute;
    inset: 0;
    z-index: 10;
    display: flex;
    flex-direction: row;
    align-items: stretch;
}

/* Left panel: text + info */
.intro-left {
    flex: 0 1 var(--digest-max-w);
    display: flex;
    flex-direction: column;
    padding: var(--sp-lg) var(--sp-lg) calc(var(--sp-xl) + 50px) var(--sp-lg);
    overflow: hidden;
}

/* Right panel: visual space (clock, date, empty) */
.intro-right {
    flex: 1 1 50%;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: flex-start;
    padding: var(--sp-lg);
    pointer-events: none;
}

/* ─── Welcome Overlay ──────────────────────────────────────── */
.intro-welcome-overlay {
    position: absolute;
    inset: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 10, 0.96);
    transition: opacity 0.8s ease;
}

.intro-welcome-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.intro-welcome-timer {
    position: relative;
    width: clamp(80px, 15vw, 140px);
    height: clamp(80px, 15vw, 140px);
    margin-bottom: var(--sp-lg);
}

.intro-welcome-timer-ring {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.intro-welcome-timer-bg {
    fill: none;
    stroke: rgba(201, 162, 39, 0.12);
    stroke-width: 3;
}

.intro-welcome-timer-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 3;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s linear;
}

.intro-welcome-timer-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--fs-title);
    font-weight: 300;
    color: var(--accent);
}

.intro-welcome-title {
    font-size: var(--fs-hero);
    font-weight: 300;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: var(--sp-xs);
}

.intro-welcome-subtitle {
    font-size: var(--fs-subtitle);
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    margin-bottom: var(--sp-xl);
}

.intro-welcome-start-sound {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-sm);
    padding: clamp(10px, 2vw, 16px) clamp(20px, 4vw, 36px);
    background: transparent;
    border: 1px solid var(--accent);
    border-radius: 30px;
    color: var(--accent);
    font-size: var(--fs-body);
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: var(--sp-md);
}

.intro-welcome-start-sound:hover {
    background: var(--accent);
    color: #0a0a0a;
}

.intro-welcome-hint {
    font-size: var(--fs-caption);
    color: var(--text-secondary);
}

/* ─── Top Info (Clock + Date) ─────────────────────────────── */
.intro-top-info {
    display: flex;
    flex-direction: column;
    gap: var(--sp-xs);
    pointer-events: none;
}

.intro-top-clock {
    font-size: var(--fs-clock);
    font-weight: 300;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: 0.02em;
}

.intro-top-date {
    font-size: var(--fs-caption);
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    text-transform: capitalize;
}

/* ─── Digest Card (Left Panel) ────────────────────────────── */
.intro-digest-card {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: clamp(10px, 2vw, 20px);
    padding: var(--digest-padding);
    box-shadow: var(--shadow);
    overflow: hidden;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.intro-digest-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.intro-digest-date {
    font-size: var(--fs-caption);
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--sp-xs);
    flex-shrink: 0;
}

.intro-digest-saint {
    font-size: var(--fs-caption);
    color: var(--accent);
    font-style: italic;
    margin-bottom: var(--sp-sm);
    padding-bottom: var(--sp-sm);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    line-height: 1.4;
}

.intro-digest-text {
    flex: 1;
    min-height: 0;
    font-size: var(--fs-body);
    line-height: 1.75;
    color: var(--text-primary);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-dim) transparent;
}

.intro-digest-text::-webkit-scrollbar { width: 4px; }
.intro-digest-text::-webkit-scrollbar-track { background: transparent; }
.intro-digest-text::-webkit-scrollbar-thumb { background: var(--accent-dim); border-radius: 2px; }

.intro-digest-text .word {
    opacity: 0;
    transition: opacity 0.35s ease;
}

.intro-digest-text .word.revealed {
    opacity: 1;
}

/* ─── Progress Bar ─────────────────────────────────────────── */
.intro-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(201, 162, 39, 0.08);
    z-index: 30;
}

.intro-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #e8c84a);
    transition: width 0.3s ease;
    width: 0%;
    will-change: width;
}

/* ─── Controls ─────────────────────────────────────────────── */
.intro-controls {
    position: absolute;
    bottom: var(--sp-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 40;
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
    background: rgba(10, 10, 10, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--sp-xs) var(--sp-sm);
    border-radius: 40px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.intro-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--btn-size);
    height: var(--btn-size);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.intro-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.intro-btn.active {
    background: var(--accent-dim);
    border-color: var(--accent);
    color: var(--accent);
}

.intro-btn svg {
    width: var(--btn-icon);
    height: var(--btn-icon);
}

/* ─── Slide Counter ────────────────────────────────────────── */
.intro-slide-counter {
    font-size: var(--fs-counter);
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    pointer-events: none;
}

/* ─── Preloader ────────────────────────────────────────────── */
.intro-preloader {
    position: absolute;
    inset: 0;
    z-index: 200;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
}

.intro-preloader.hidden { display: none; }

.intro-preloader-ring {
    width: clamp(40px, 8vw, 70px);
    height: clamp(40px, 8vw, 70px);
    border: 2px solid rgba(201, 162, 39, 0.15);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--sp-md);
}

@keyframes spin { to { transform: rotate(360deg); } }

.intro-preloader-text {
    font-size: var(--fs-caption);
    color: var(--text-secondary);
    letter-spacing: 0.1em;
}

/* ─── Landscape Rotation Prompt (mobile) ──────────────────── */
.intro-rotate-prompt {
    position: absolute;
    inset: 0;
    z-index: 250;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 10, 0.98);
    color: var(--text-secondary);
    gap: var(--sp-md);
}

.intro-rotate-prompt.visible {
    display: flex;
}

.intro-rotate-prompt svg {
    width: 48px;
    height: 48px;
    animation: rotatePhone 2s ease-in-out infinite;
    color: var(--accent);
}

@keyframes rotatePhone {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(90deg); }
}

.intro-rotate-prompt span {
    font-size: var(--fs-body);
    text-align: center;
    padding: 0 var(--sp-lg);
}

.intro-rotate-prompt button {
    padding: var(--sp-xs) var(--sp-md);
    background: transparent;
    border: 1px solid var(--accent);
    border-radius: 20px;
    color: var(--accent);
    font-size: var(--fs-caption);
    cursor: pointer;
}

/* ─── Digest Date Label (above card) ──────────────────────── */
.intro-digest-label {
    font-size: var(--fs-caption);
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--sp-xs);
    flex-shrink: 0;
}

/* ─── Responsive: Small screens (portrait) ────────────────── */
@media (max-width: 768px) and (orientation: portrait) {
    .intro-content {
        flex-direction: column;
    }

    .intro-left {
        flex: 1 1 auto;
        max-height: 45vh;
        padding: var(--sp-md) var(--sp-md) calc(var(--sp-lg) + 50px) var(--sp-md);
    }

    .intro-right {
        display: none;
    }

    .intro-digest-card {
        --digest-max-w: 100%;
    }

    .intro-controls {
        bottom: var(--sp-sm);
        gap: var(--sp-xs);
        padding: 3px var(--sp-xs);
    }
}

/* ─── Responsive: Very small screens ──────────────────────── */
@media (max-width: 360px) {
    .intro-left {
        padding: var(--sp-sm) var(--sp-sm) calc(var(--sp-md) + 50px) var(--sp-sm);
    }

    .intro-welcome-title {
        letter-spacing: 0.15em;
    }

    .intro-controls {
        gap: 2px;
        padding: 2px 6px;
    }
}

/* ─── Responsive: Landscape on mobile ─────────────────────── */
@media (max-height: 500px) and (orientation: landscape) {
    .intro-left {
        padding: var(--sp-xs) var(--sp-sm) calc(var(--sp-sm) + 44px) var(--sp-sm);
    }

    .intro-welcome-overlay {
        padding: var(--sp-sm);
    }

    .intro-welcome-timer {
        width: 60px;
        height: 60px;
        margin-bottom: var(--sp-sm);
    }

    .intro-welcome-title {
        font-size: 1.5rem;
        margin-bottom: 4px;
    }

    .intro-welcome-subtitle {
        margin-bottom: var(--sp-sm);
    }
}

/* ─── Responsive: Large screens ───────────────────────────── */
@media (min-width: 1440px) {
    :root {
        --digest-max-w: min(42vw, 720px);
    }

    .intro-digest-text {
        font-size: 1.1rem;
    }
}

/* ─── Responsive: Ultra-wide ──────────────────────────────── */
@media (min-width: 1920px) {
    :root {
        --digest-max-w: min(38vw, 800px);
    }
}

/* ─── Accessibility: Reduced motion ───────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .intro-digest-card {
        transition: none;
    }

    .intro-digest-text .word {
        transition: none;
    }

    .intro-welcome-overlay {
        transition: none;
    }

    .intro-preloader-ring {
        animation: none;
    }
}

/* ─── Print: hide player controls ─────────────────────────── */
@media print {
    .intro-controls,
    .intro-progress,
    .intro-preloader,
    .intro-welcome-overlay {
        display: none !important;
    }
}