/* ============================================
   CRE FORENSIC TOOL — CINEMATIC STYLES
   Vines Connection | Melanin Intelligence
   ============================================ */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --gold: #d4a853;
    --gold-bright: #f0c75e;
    --gold-dim: #a07830;
    --cyan: #4fd1e8;
    --cyan-bright: #7ee8f5;
    --cyan-dim: #2a8fa0;
    --red-muted: #c0392b;
    --red-bright: #e74c3c;
    --cream: #f0ece4;
    --cream-dim: rgba(240, 236, 228, 0.7);
    --bg-dark: #060810;
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg-dark);
    color: var(--cream);
    font-family: 'Lora', Georgia, serif;
}

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--cyan-dim), var(--cyan-bright), var(--gold));
    z-index: 1000;
    transition: width 0.3s ease-out;
    box-shadow: 0 0 10px rgba(79, 209, 232, 0.5);
}

/* ============================================
   CONTROLS
   ============================================ */
.controls {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 900;
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0;
    transition: opacity 0.4s;
}

body:hover .controls,
.controls:focus-within {
    opacity: 1;
}

.control-btn {
    background: rgba(0, 20, 40, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(79, 209, 232, 0.2);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s, border-color 0.3s;
}

.control-btn:hover {
    background: rgba(79, 209, 232, 0.15);
    border-color: rgba(79, 209, 232, 0.5);
    transform: scale(1.1);
}

.slide-counter {
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
}

.vines-branding {
    display: flex;
    align-items: center;
}

.branding-logo {
    height: 32px;
    width: 32px;
    border-radius: 50%;
    object-fit: cover;
    opacity: 0.7;
    filter: brightness(1.1);
    animation: vinesBounce 2.4s ease-in-out infinite;
}

/* ============================================
   START SCREEN
   ============================================ */
.start-screen {
    position: fixed;
    inset: 0;
    z-index: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at center, #0a1020 0%, #060810 70%);
    transition: opacity 1.5s ease, visibility 1.5s ease;
}

.start-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.start-content {
    text-align: center;
    animation: startFadeIn 2s ease forwards;
}

@keyframes startFadeIn {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

.logo-container {
    margin-bottom: 2.5rem;
}

.main-logo {
    height: 140px;
    width: 140px;
    border-radius: 50%;
    object-fit: cover;
    filter: drop-shadow(0 0 20px rgba(79, 209, 232, 0.3));
    animation: vinesBounce 2.4s ease-in-out infinite;
}

.start-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: 0.65rem;
    font-weight: 400;
    letter-spacing: 0.45em;
    color: var(--cyan);
    margin-bottom: 1.5rem;
    opacity: 0.85;
}

.start-title {
    font-family: 'Cinzel', serif;
    font-size: clamp(2rem, 6vw, 4.5rem);
    font-weight: 800;
    letter-spacing: 0.06em;
    line-height: 1.15;
    color: var(--cream);
    text-shadow: 0 0 60px rgba(79, 209, 232, 0.2), 0 0 120px rgba(79, 209, 232, 0.1);
}

.start-native {
    font-family: 'Lora', serif;
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    font-weight: 400;
    font-style: italic;
    color: var(--gold);
    margin-top: 1rem;
    letter-spacing: 0.1em;
}

.start-tagline {
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 0.08em;
    color: var(--cream-dim);
    margin-top: 1.5rem;
}

.start-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 3rem;
    padding: 14px 40px;
    background: transparent;
    border: 1px solid var(--cyan-dim);
    border-radius: 4px;
    color: var(--cyan);
    font-family: 'Inter', sans-serif;
    font-size: 0.78rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    cursor: pointer;
    transition: all 0.4s;
    box-shadow: 0 0 20px rgba(79, 209, 232, 0.1);
}

.start-btn svg {
    fill: var(--cyan);
    width: 14px;
    height: 14px;
}

.start-btn:hover {
    background: rgba(79, 209, 232, 0.1);
    border-color: var(--cyan);
    box-shadow: 0 0 30px rgba(79, 209, 232, 0.25);
}

/* ============================================
   SLIDES
   ============================================ */
.slides-container {
    position: fixed;
    inset: 0;
    overflow: hidden;
}

.slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    overflow-y: auto;
    overflow-x: hidden;
    opacity: 0;
    visibility: hidden;
    transform: scale(1);
    transition:
        opacity 2.5s ease-in-out,
        visibility 2.5s ease-in-out,
        transform 18s ease-in-out;
    background-size: cover;
    background-position: center;
    will-change: opacity, transform;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.slide::-webkit-scrollbar { display: none; }

.slide.active {
    opacity: 1;
    visibility: visible;
}

/* Ken Burns slow drift */
.slide.active:nth-child(4n+1) { transform: scale(1.07); }
.slide.active:nth-child(4n+2) { transform: scale(1.05) translateX(-1%); }
.slide.active:nth-child(4n+3) { transform: scale(1.09); }
.slide.active:nth-child(4n+4) { transform: scale(1.06) translateX(1%); }

/* ============================================
   OVERLAYS
   ============================================ */
.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    min-height: 300vh;
    z-index: 1;
    pointer-events: none;
}

.overlay-dark {
    background: rgba(0, 0, 0, 0.65);
}

.overlay-darker {
    background: rgba(0, 5, 15, 0.80);
}

.overlay-deep {
    background: rgba(5, 8, 20, 0.85);
}

.overlay-deeper {
    background: rgba(3, 5, 15, 0.88);
}

/* ============================================
   SLIDE CONTENT
   ============================================ */
.slide-content {
    position: relative;
    z-index: 2;
    max-width: 920px;
    padding: 4rem 2.5rem;
    margin: auto 0;
}

.center-content {
    text-align: center;
}

.slide-label {
    display: inline-block;
    font-family: 'Inter', sans-serif;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.42em;
    color: var(--cyan);
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateY(15px);
}

.slide-heading {
    font-family: 'Cinzel', serif;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: 0.04em;
    color: var(--cream);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
    opacity: 0;
    transform: translateY(25px);
}

.slide-heading.mega {
    font-size: clamp(1.8rem, 4.5vw, 3.2rem);
    text-transform: uppercase;
}

.slide-heading.gold {
    color: var(--gold);
    text-shadow: 0 0 40px rgba(212, 168, 83, 0.25);
}

.slide-heading.cyan {
    color: var(--cyan);
    text-shadow: 0 0 40px rgba(79, 209, 232, 0.3);
}

.slide-text {
    font-family: 'Lora', serif;
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 1.75;
    color: var(--cream);
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
    opacity: 0;
    transform: translateY(20px);
}

.slide-text.large {
    font-size: clamp(1.4rem, 2.8vw, 1.9rem);
    font-weight: 600;
}

.slide-text.accent {
    color: var(--gold);
}

.slide-text.subdued {
    color: var(--cream-dim);
    font-style: italic;
}

.slide-text strong {
    font-weight: 700;
    color: var(--cyan-bright);
}

.slide-text em {
    font-style: italic;
    color: var(--cream);
}

/* ============================================
   QUOTES
   ============================================ */
.quote-block {
    max-width: 780px;
    margin: 0 auto;
    padding: 2rem 2.5rem;
    border-left: 3px solid var(--cyan-dim);
    text-align: left;
    opacity: 0;
    transform: translateY(20px);
}

.slide-text.quote {
    font-style: italic;
    font-size: clamp(1.1rem, 2.3vw, 1.45rem);
    line-height: 1.85;
    color: var(--cream);
    opacity: 1;
    transform: none;
}

.slide-text.attribution {
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    color: var(--cyan);
    margin-top: 1.5rem;
    opacity: 1;
    transform: none;
}

/* ============================================
   CLOSING LOGO
   ============================================ */
.closing-logo {
    height: 120px;
    width: 120px;
    border-radius: 50%;
    object-fit: cover;
    filter: drop-shadow(0 0 25px rgba(79, 209, 232, 0.4));
    margin-bottom: 0.5rem;
    animation: vinesBounce 2.4s ease-in-out infinite;
}

@keyframes vinesBounce {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}

/* ============================================
   FILM GRAIN
   ============================================ */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-size: 256px 256px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .slide-content {
        padding: 1.5rem;
        max-width: 96%;
    }

    .slide-text {
        font-size: 0.95rem;
        line-height: 1.65;
    }

    .slide-text.large {
        font-size: 1.1rem;
    }

    .slide-heading.mega {
        font-size: clamp(1.4rem, 5.5vw, 2.2rem);
    }

    .slide-heading {
        font-size: clamp(1.1rem, 4vw, 1.7rem);
    }

    .quote-block {
        padding: 1rem 1.2rem;
    }

    .controls {
        bottom: 16px;
        right: 16px;
        gap: 8px;
    }

    .control-btn {
        width: 38px;
        height: 38px;
    }
}