/* ============================================
   BBOTTL.com — Styles
   Holographic Iridescence meets Sepia Nostalgia
   ============================================ */

/* --- Custom Properties --- */
:root {
    --parchment: #f5efe6;
    --amber: #3d2b1f;
    --ink-sepia: #2c1810;
    --faded-umber: #8b7355;
    --prismatic-rose: #e8a4c8;
    --refracted-teal: #7ecfc0;
    --diffracted-gold: #d4a853;
    --spectral-violet: #9b8ec4;
    --crackle-glaze: #c4b69c;
    --ghost-amber: #e8dcc8;
    --holo-gradient: linear-gradient(135deg, #e8a4c8 0%, #7ecfc0 25%, #d4a853 50%, #9b8ec4 75%, #e8a4c8 100%);
    --ease-reveal: cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Cormorant Garamond', Georgia, serif;
    background-color: var(--parchment);
    color: var(--ink-sepia);
    overflow: hidden;
    position: relative;
    width: 100vw;
    height: 100vh;
}

/* --- Skeleton Loading Overlay --- */
.skeleton-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background-color: var(--parchment);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease;
}

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

.skeleton-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    width: 60%;
    max-width: 600px;
}

.skeleton-block {
    border-radius: 4px;
    background: var(--ghost-amber);
    position: relative;
    overflow: hidden;
}

.skeleton-block::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 30%,
        rgba(232, 164, 200, 0.15) 40%,
        rgba(126, 207, 192, 0.15) 50%,
        rgba(212, 168, 83, 0.15) 55%,
        rgba(155, 142, 196, 0.15) 60%,
        transparent 70%
    );
    animation: skeletonShimmer 2s infinite linear;
    transform: translateX(-100%);
}

@keyframes skeletonShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.skeleton-title {
    width: 70%;
    height: 60px;
    animation-delay: 0s;
}

.skeleton-line {
    width: 90%;
    height: 16px;
    animation-delay: 0.2s;
}

.skeleton-line.short {
    width: 50%;
    animation-delay: 0.4s;
}

.skeleton-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    animation-delay: 0.6s;
}

/* --- Scroll Container --- */
.scroll-container {
    width: 100vw;
    height: 100vh;
    overflow-y: auto;
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
}

/* --- Spread (each = 100vh) --- */
.spread {
    width: 100vw;
    height: 100vh;
    scroll-snap-align: start;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* --- Spread Grid (12-col) --- */
.spread-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 1400px;
    padding: 0 40px;
    position: relative;
    z-index: 2;
}

/* --- Navigation --- */
.spread-nav {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}

.nav-line {
    position: absolute;
    width: 1px;
    height: 100%;
    background: var(--crackle-glaze);
    opacity: 0.4;
}

.nav-notch {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid var(--crackle-glaze);
    background: transparent;
    cursor: pointer;
    position: relative;
    z-index: 2;
    transition: all 0.4s ease;
}

.nav-notch:hover {
    border-color: var(--diffracted-gold);
}

.nav-notch.active {
    background: var(--holo-gradient);
    background-size: 300% 300%;
    animation: holoShift 8s linear infinite;
    border-color: transparent;
    box-shadow: 0 0 8px rgba(232, 164, 200, 0.4);
}

@keyframes holoShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* --- Typography --- */
.title-massive {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(4rem, 12vw, 14rem);
    font-weight: 900;
    line-height: 0.9;
    letter-spacing: -0.02em;
    color: var(--ink-sepia);
    grid-column: 1 / -1;
    text-align: center;
}

.holo-text {
    background: var(--holo-gradient);
    background-size: 400% 400%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: holoTextShift 8s linear infinite;
}

@keyframes holoTextShift {
    0% { background-position: 0% 50%; }
    25% { background-position: 100% 0%; }
    50% { background-position: 100% 100%; }
    75% { background-position: 0% 100%; }
    100% { background-position: 0% 50%; }
}

.section-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(2.5rem, 6vw, 6rem);
    font-weight: 700;
    line-height: 1;
    margin-bottom: 1.5rem;
}

.body-text {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: clamp(1rem, 1.2vw, 1.25rem);
    line-height: 1.85;
    color: var(--ink-sepia);
    margin-bottom: 1.2rem;
    max-width: 540px;
}

.mono-accent {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--faded-umber);
}

.tagline {
    grid-column: 1 / -1;
    text-align: center;
    margin-top: 1rem;
}

.title-line {
    grid-column: 4 / 10;
    height: 1px;
    background: var(--crackle-glaze);
    margin-top: 1.5rem;
    transform: scaleX(0);
    transition: transform 1.5s var(--ease-reveal) 0.6s;
}

.spread-opening.in-view .title-line {
    transform: scaleX(1);
}

.annotation {
    display: block;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--crackle-glaze);
}

.timestamp {
    color: var(--diffracted-gold);
}

/* --- Opening Spread --- */
.spread-opening {
    background: var(--parchment);
}

.spread-opening .spread-content {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
    align-items: center;
}

.kanji-watermark {
    position: absolute;
    right: 8%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.03;
    z-index: 1;
}

.kanji-svg {
    width: 300px;
    height: 300px;
}

.kanji-char {
    font-family: serif;
    font-size: 160px;
    fill: var(--ink-sepia);
}

/* --- Breath Spreads --- */
.spread-breath {
    background: var(--parchment);
    position: relative;
}

.breath-content {
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.holo-ambient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(232, 164, 200, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 40%, rgba(126, 207, 192, 0.05) 0%, transparent 55%);
    z-index: 1;
}

.holo-ambient.reverse {
    background: radial-gradient(ellipse at 70% 60%, rgba(155, 142, 196, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 30% 30%, rgba(212, 168, 83, 0.05) 0%, transparent 55%);
}

/* --- Ensō --- */
.enso {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.enso.visible {
    opacity: 1;
}

.enso-path {
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    transition: stroke-dashoffset 2s ease-in-out;
}

.enso.animate .enso-path {
    stroke-dashoffset: 75;
}

/* --- Editorial Spreads --- */
.editorial-grid {
    align-items: center;
    min-height: 0;
}

.editorial-image {
    grid-column: 1 / 6;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.editorial-text {
    grid-column: 7 / 12;
    padding: 2rem 0;
}

.reverse-editorial .editorial-text {
    grid-column: 1 / 6;
    order: -1;
}

.reverse-editorial .editorial-image {
    grid-column: 7 / 12;
}

/* Image Frames */
.image-frame {
    position: relative;
    overflow: hidden;
    border-radius: 2px;
}

.tall-narrow {
    width: 180px;
    height: 450px;
}

.extreme-landscape {
    width: 100%;
    height: 160px;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--ghost-amber);
    display: flex;
    align-items: center;
    justify-content: center;
    filter: sepia(0.6) contrast(1.1);
}

.holo-border {
    position: absolute;
    inset: -3px;
    border: 3px solid transparent;
    border-radius: 4px;
    background: var(--holo-gradient) border-box;
    background-size: 400% 400%;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    animation: holoShift 8s linear infinite;
    opacity: 0.7;
    transition: opacity 0.4s ease;
}

.image-frame:hover .holo-border {
    opacity: 1;
}

.image-caption {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 0.85rem;
    color: var(--faded-umber);
    font-style: italic;
    text-align: center;
}

.bottle-illustration {
    width: 120px;
    height: 300px;
}

.landscape-img {
    background: linear-gradient(135deg, var(--ghost-amber) 0%, rgba(196, 182, 156, 0.3) 100%);
}

.constellation-static {
    width: 100%;
    height: 100%;
}

/* Wax Seal */
.wax-seal {
    margin-top: 2rem;
    opacity: 0.6;
}

/* --- Dark Spread --- */
.spread-dark {
    background: var(--amber);
}

.spread-dark .body-text {
    color: var(--ghost-amber);
}

.spread-dark .image-caption {
    color: var(--crackle-glaze);
}

.spread-dark .mono-accent {
    color: var(--crackle-glaze);
}

/* --- Crackle Overlay --- */
.crackle-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.08;
    background-image:
        linear-gradient(47deg, transparent 49.5%, var(--crackle-glaze) 49.5%, var(--crackle-glaze) 50.5%, transparent 50.5%),
        linear-gradient(133deg, transparent 49.5%, var(--crackle-glaze) 49.5%, var(--crackle-glaze) 50.5%, transparent 50.5%),
        linear-gradient(90deg, transparent 49.5%, var(--crackle-glaze) 49.5%, var(--crackle-glaze) 50.5%, transparent 50.5%);
    background-size: 80px 60px, 120px 80px, 100px 90px;
}

.crackle-overlay.light {
    opacity: 0.05;
}

/* --- Data Spread --- */
.spread-data {
    background: var(--parchment);
}

.data-content {
    grid-column: 3 / 11;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2rem;
}

.data-annotation {
    max-width: 400px;
}

.radial-chart-container {
    position: relative;
}

.radial-chart {
    overflow: visible;
}

.data-label {
    font-family: 'Space Mono', monospace;
    font-size: 8px;
    fill: var(--faded-umber);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.radial-segment {
    transform-origin: 150px 150px;
    transform: scale(0);
    transition: transform 2s var(--ease-reveal);
}

.spread-data.in-view .radial-segment {
    transform: scale(1);
}

.spread-data.in-view .seg-1 { transition-delay: 0.3s; }
.spread-data.in-view .seg-2 { transition-delay: 0.6s; }
.spread-data.in-view .seg-3 { transition-delay: 0.9s; }

/* Timeline */
.timeline-ribbon {
    width: 100%;
    max-width: 700px;
    position: relative;
}

.timeline-svg {
    width: 100%;
    height: 80px;
}

.timeline-path {
    stroke-dasharray: 1200;
    stroke-dashoffset: 1200;
    transition: stroke-dashoffset 3s ease-in-out;
}

.spread-data.in-view .timeline-path {
    stroke-dashoffset: 0;
}

.timeline-node {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.spread-data.in-view .timeline-node {
    opacity: 1;
}

.spread-data.in-view .timeline-node:nth-child(2) { transition-delay: 0.8s; }
.spread-data.in-view .timeline-node:nth-child(3) { transition-delay: 1.4s; }
.spread-data.in-view .timeline-node:nth-child(4) { transition-delay: 2.0s; }
.spread-data.in-view .timeline-node:nth-child(5) { transition-delay: 2.6s; }

.timeline-labels {
    display: flex;
    justify-content: space-around;
    margin-top: 8px;
}

/* --- Closing Spread --- */
.spread-closing {
    background: var(--amber);
}

.closing-content {
    grid-column: 4 / 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2rem;
}

.bottle-vessel {
    position: relative;
}

.bottle-svg {
    overflow: visible;
}

.bottle-fill {
    transition: y 3s var(--ease-reveal);
}

.closing-text {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
}

.closing-word {
    font-size: inherit;
}

.closing-sub {
    color: var(--crackle-glaze);
}

/* Bubbles */
.bubble {
    fill: rgba(232, 164, 200, 0.3);
    animation: bubbleUp 2.5s ease-in infinite;
}

@keyframes bubbleUp {
    0% {
        transform: translateY(0) scale(1);
        opacity: 0.5;
    }
    100% {
        transform: translateY(-150px) scale(0.3);
        opacity: 0;
    }
}

/* --- Constellation Canvas --- */
.constellation-canvas {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

/* --- Scroll Reveal Animations --- */
.reveal-item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-reveal), transform 0.8s var(--ease-reveal);
}

.reveal-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays for children */
.reveal-group .reveal-item:nth-child(1) { transition-delay: 0s; }
.reveal-group .reveal-item:nth-child(2) { transition-delay: 0.15s; }
.reveal-group .reveal-item:nth-child(3) { transition-delay: 0.3s; }
.reveal-group .reveal-item:nth-child(4) { transition-delay: 0.45s; }
.reveal-group .reveal-item:nth-child(5) { transition-delay: 0.6s; }
.reveal-group .reveal-item:nth-child(6) { transition-delay: 0.75s; }

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    .holo-text {
        animation: none;
        background-size: 100% 100%;
    }
    .nav-notch.active {
        animation: none;
        background: var(--diffracted-gold);
    }
    .holo-border {
        animation: none;
    }
    .skeleton-block::after {
        animation: none;
    }
    .enso-path {
        transition: none;
        stroke-dashoffset: 75;
    }
    .reveal-item {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .radial-segment {
        transform: scale(1);
        transition: none;
    }
    .timeline-path {
        stroke-dashoffset: 0;
        transition: none;
    }
    .timeline-node {
        opacity: 1;
        transition: none;
    }
    .bottle-fill {
        transition: none;
    }
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .spread-grid {
        padding: 0 20px;
    }

    .editorial-grid {
        grid-template-columns: 1fr;
    }

    .editorial-image,
    .editorial-text,
    .reverse-editorial .editorial-text,
    .reverse-editorial .editorial-image {
        grid-column: 1 / -1;
        order: unset;
    }

    .editorial-image {
        margin-bottom: 1.5rem;
    }

    .tall-narrow {
        width: 140px;
        height: 350px;
    }

    .data-content {
        grid-column: 1 / -1;
    }

    .closing-content {
        grid-column: 1 / -1;
    }

    .spread-nav {
        right: 12px;
        gap: 14px;
    }

    .nav-notch {
        width: 8px;
        height: 8px;
    }

    .title-massive {
        font-size: clamp(3rem, 15vw, 8rem);
    }

    .kanji-svg {
        width: 200px;
        height: 200px;
    }
}