/* ═══════════════════════════════════════════════════════════════════════════
   Tribute Presentation Player — Core Layout & Controls
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Fullscreen container ─────────────────────────────────────────────── */
.presentation-player {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: #0a0a0a;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
}

/* ── Slide viewport ───────────────────────────────────────────────────── */
.presentation-slide-viewport {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.presentation-slide {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.8s ease-in-out;
}

.presentation-slide.slide-active {
    opacity: 1;
    pointer-events: auto;
}

.presentation-slide.slide-enter {
    opacity: 0;
}

.presentation-slide.slide-exit {
    opacity: 0;
}

/* ── Control bar ──────────────────────────────────────────────────────── */
.presentation-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    z-index: 10;
    opacity: 1;
    transition: opacity 0.4s ease;
}

.presentation-controls.controls-hidden {
    opacity: 0;
    pointer-events: none;
}

.presentation-controls button {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background 0.2s, transform 0.15s;
    -webkit-tap-highlight-color: transparent;
}

.presentation-controls button:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.08);
}

.presentation-controls button:active {
    transform: scale(0.95);
}

.presentation-controls button.control-exit {
    position: absolute;
    right: 2rem;
    top: auto;
}

.presentation-controls button.control-loop-active {
    background: rgba(255, 255, 255, 0.35);
    border-color: rgba(255, 255, 255, 0.7);
    color: #fff;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
}

/* ── Progress bar ─────────────────────────────────────────────────────── */
.presentation-progress {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255, 255, 255, 0.15);
    z-index: 10;
}

.presentation-progress-fill {
    height: 100%;
    background: rgba(255, 255, 255, 0.6);
    transition: width 0.3s ease;
}

/* ── Slide counter ────────────────────────────────────────────────────── */
.presentation-counter {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

/* ── Shared slide typography ──────────────────────────────────────────── */
.pres-text-hero {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    text-align: center;
    color: #fff;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.pres-text-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.6rem);
    font-weight: 400;
    text-align: center;
    color: rgba(255, 255, 255, 0.75);
    margin-top: 0.75rem;
}

.pres-text-body {
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: 400;
    line-height: 1.5;
    text-align: center;
    color: #fff;
    max-width: 42ch;
}

.pres-text-quote {
    font-size: clamp(1.4rem, 3.5vw, 2.4rem);
    font-weight: 300;
    font-style: italic;
    line-height: 1.5;
    text-align: center;
    color: #fff;
    max-width: 36ch;
}

.pres-text-attribution {
    font-size: clamp(0.9rem, 2vw, 1.2rem);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 1rem;
    text-align: center;
}

.pres-text-label {
    font-size: clamp(0.8rem, 1.5vw, 1rem);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
}

/* ── Background image helpers ─────────────────────────────────────────── */
.pres-bg-image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.pres-bg-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
}

.pres-bg-blur {
    position: absolute;
    inset: -20px;
    background-size: cover;
    background-position: center;
    filter: blur(25px);
    opacity: 0.4;
}

/* ── Ken Burns effect ─────────────────────────────────────────────────── */
@keyframes kenBurns {
    0% {
        transform: scale(1) translate(0, 0);
    }
    100% {
        transform: scale(1.15) translate(-2%, -1%);
    }
}

/* Pan upward from center — ensures faces at the top of a photo are revealed */
@keyframes kenBurnsPanUp {
    0% {
        transform: scale(1.25) translateY(8%);
    }
    100% {
        transform: scale(1.3) translateY(-8%);
    }
}

.pres-ken-burns {
    animation: kenBurns 15s ease-in-out forwards;
}

/* ── Fade-in animation ────────────────────────────────────────────────── */
@keyframes presFadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pres-fade-in-up {
    opacity: 0;
    animation: presFadeInUp 0.8s ease-out forwards;
}

/* Stagger helper: child elements get incremental delays */
.pres-stagger > * {
    opacity: 0;
    animation: presFadeInUp 0.6s ease-out forwards;
}
.pres-stagger > *:nth-child(1) { animation-delay: 0.1s; }
.pres-stagger > *:nth-child(2) { animation-delay: 0.4s; }
.pres-stagger > *:nth-child(3) { animation-delay: 0.7s; }
.pres-stagger > *:nth-child(4) { animation-delay: 1.0s; }
.pres-stagger > *:nth-child(5) { animation-delay: 1.3s; }
.pres-stagger > *:nth-child(6) { animation-delay: 1.6s; }

/* ── Counter reveal animation ─────────────────────────────────────────── */
@keyframes presCountUp {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.pres-counter-reveal {
    opacity: 0;
    animation: presCountUp 0.5s ease-out forwards;
}

/* ── Word cloud ───────────────────────────────────────────────────────── */
@keyframes presWordAppear {
    from {
        opacity: 0;
        transform: scale(0.4);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.pres-word-cloud .pres-word {
    opacity: 0;
    display: inline-block;
    margin: 0.3rem 0.6rem;
    animation: presWordAppear 0.5s ease-out forwards;
}

/* ── Bounce-in for funny slides ───────────────────────────────────────── */
@keyframes presBounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.95);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.pres-bounce-in {
    opacity: 0;
    animation: presBounceIn 0.7s ease-out forwards;
}

/* ── Crossfade cycling for future messages ────────────────────────────── */
.pres-crossfade-item {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.pres-crossfade-item.crossfade-active {
    opacity: 1;
}

/* ── Pulse animation for closing ──────────────────────────────────────── */
@keyframes presPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.pres-pulse {
    animation: presPulse 3s ease-in-out infinite;
}

/* ── Photo slideshow internal cycling ─────────────────────────────────── */
.pres-photo-cycle {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
}

.pres-photo-cycle.photo-active {
    opacity: 1;
}

.pres-photo-cycle .pres-bg-image {
    background-position: center 65%;
    animation: kenBurnsPanUp 8s ease-in-out forwards;
}

/* ── Reduced motion ───────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .pres-ken-burns,
    .pres-fade-in-up,
    .pres-stagger > *,
    .pres-counter-reveal,
    .pres-word-cloud .pres-word,
    .pres-bounce-in,
    .pres-photo-cycle .pres-bg-image {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }

    .presentation-slide {
        transition: opacity 0.15s ease !important;
    }

    .pres-crossfade-item {
        transition: opacity 0.15s ease !important;
    }

    .pres-photo-cycle {
        transition: opacity 0.15s ease !important;
    }
}

/* ── Mobile adjustments ───────────────────────────────────────────────── */
@media (max-width: 600px) {
    .presentation-slide {
        padding: 1.5rem 1rem;
    }

    .presentation-controls {
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }

    .presentation-controls button {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .presentation-controls button.control-exit {
        right: 1rem;
    }
}