/* ============================================================
   gabs.reviews - Midnight Library Design System
   Colors: #d4cfc4, #7a7568, #c9943a, #2a2e38, #0d0f14, #8b6cc7, #3dd8d8, #181c24
   Fonts: Cormorant Garamond, Inter, Space Grotesk
   ============================================================ */

/* === CSS Custom Properties === */
:root {
    --color-parchment: #d4cfc4;
    --color-warm-gray: #7a7568;
    --color-gold: #c9943a;
    --color-charcoal: #2a2e38;
    --color-obsidian: #0d0f14;
    --color-violet: #8b6cc7;
    --color-cyan: #3dd8d8;
    --color-deep-charcoal: #181c24;

    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Inter', 'Source Sans 3', -apple-system, sans-serif;
    --font-mono: 'Space Grotesk', 'Courier New', monospace;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--color-obsidian);
    color: var(--color-parchment);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 16px;
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

/* === Awakening Overlay === */
.awakening-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-obsidian);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 1;
    transition: opacity 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.awakening-overlay.faded {
    opacity: 0;
}

.awakening-overlay.hidden {
    display: none;
}

.awakening-glow {
    width: 4px;
    height: 0;
    background: linear-gradient(to bottom, var(--color-cyan), var(--color-violet));
    border-radius: 2px;
    box-shadow: 0 0 20px var(--color-cyan), 0 0 40px rgba(61, 216, 216, 0.3);
    animation: awaken-grow 0.8s 0.4s ease-out forwards;
}

@keyframes awaken-grow {
    0% { height: 0; opacity: 0; }
    100% { height: 80px; opacity: 1; }
}

/* === Book Spines (Side Margins) === */
.book-spines {
    position: fixed;
    top: 0;
    height: 100%;
    width: 60px;
    z-index: 10;
    pointer-events: none;
    opacity: 0;
    transition: opacity 1.5s ease;
}

.book-spines.visible {
    opacity: 1;
}

.book-spines--left {
    left: 0;
}

.book-spines--right {
    right: 0;
    transform: scaleX(-1);
}

.spine-svg {
    width: 100%;
    height: 100%;
}

.spine-svg .spine {
    filter: drop-shadow(0 0 3px currentColor);
    animation: spine-pulse 4s ease-in-out infinite alternate;
}

.spine-svg .spine:nth-child(odd) {
    animation-delay: -2s;
}

.spine-svg .spine:nth-child(3n) {
    animation-delay: -1s;
}

@keyframes spine-pulse {
    0% { opacity: 0.2; }
    100% { opacity: 0.7; }
}

/* === Marginalia Canvas === */
#marginalia-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    pointer-events: none;
    opacity: 0.6;
}

/* === Content River (Main Layout) === */
.content-river {
    position: relative;
    z-index: 20;
    max-width: 780px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 5vw, 4rem);
    opacity: 0;
    transition: opacity 1.2s ease 1.2s;
}

.content-river.visible {
    opacity: 1;
}

/* === Hero Section === */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 0;
}

.hero-inner {
    transform: translateY(20px);
    opacity: 0;
    transition: transform 1s ease 1.8s, opacity 1s ease 1.8s;
}

.content-river.visible .hero-inner {
    transform: translateY(0);
    opacity: 1;
}

.site-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 300;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.title-glow {
    color: var(--color-cyan);
    text-shadow: 0 0 30px rgba(61, 216, 216, 0.4), 0 0 60px rgba(61, 216, 216, 0.15);
}

.title-dot {
    color: var(--color-warm-gray);
    font-weight: 600;
}

.title-reviews {
    color: var(--color-parchment);
}

.site-subtitle {
    font-family: var(--font-mono);
    font-size: clamp(0.75rem, 1.5vw, 0.9rem);
    font-weight: 300;
    color: var(--color-warm-gray);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.hero-divider {
    display: flex;
    justify-content: center;
    opacity: 0.6;
}

/* === Review Cards === */
.review-card {
    margin: 4rem 0;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.review-card.revealed {
    opacity: 1;
    transform: translateY(0);
}

.review-card--shift-right {
    margin-left: 8%;
}

.review-card--shift-left {
    margin-right: 8%;
}

.review-card--centered {
    margin-left: 4%;
    margin-right: 4%;
}

.review-glow-frame {
    position: relative;
    padding: clamp(1.5rem, 3vw, 2.5rem);
    border: 1px solid rgba(61, 216, 216, 0.1);
    border-radius: 2px;
    background: linear-gradient(135deg, rgba(42, 46, 56, 0.4) 0%, rgba(13, 15, 20, 0.6) 100%);
    transition: border-color 0.5s ease, box-shadow 0.5s ease;
}

.review-card:hover .review-glow-frame {
    border-color: rgba(61, 216, 216, 0.25);
    box-shadow: 0 0 30px rgba(61, 216, 216, 0.06), inset 0 0 30px rgba(61, 216, 216, 0.02);
}

.review-card--shift-left .review-glow-frame {
    border-color: rgba(139, 108, 199, 0.1);
}

.review-card--shift-left:hover .review-glow-frame {
    border-color: rgba(139, 108, 199, 0.25);
    box-shadow: 0 0 30px rgba(139, 108, 199, 0.06), inset 0 0 30px rgba(139, 108, 199, 0.02);
}

.review-card--centered .review-glow-frame {
    border-color: rgba(201, 148, 58, 0.1);
}

.review-card--centered:hover .review-glow-frame {
    border-color: rgba(201, 148, 58, 0.25);
    box-shadow: 0 0 30px rgba(201, 148, 58, 0.06), inset 0 0 30px rgba(201, 148, 58, 0.02);
}

/* Corner accents on glow frame */
.review-glow-frame::before,
.review-glow-frame::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-style: solid;
    border-width: 0;
    opacity: 0.3;
    transition: opacity 0.5s ease;
}

.review-glow-frame::before {
    top: -1px;
    left: -1px;
    border-top-width: 1px;
    border-left-width: 1px;
    border-color: var(--color-cyan);
}

.review-glow-frame::after {
    bottom: -1px;
    right: -1px;
    border-bottom-width: 1px;
    border-right-width: 1px;
    border-color: var(--color-cyan);
}

.review-card--shift-left .review-glow-frame::before,
.review-card--shift-left .review-glow-frame::after {
    border-color: var(--color-violet);
}

.review-card--centered .review-glow-frame::before,
.review-card--centered .review-glow-frame::after {
    border-color: var(--color-gold);
}

.review-card:hover .review-glow-frame::before,
.review-card:hover .review-glow-frame::after {
    opacity: 0.7;
}

/* === Review Header === */
.review-header {
    margin-bottom: 1.5rem;
}

.review-number {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-cyan);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
    opacity: 0.6;
}

.review-card--shift-left .review-number {
    color: var(--color-violet);
}

.review-card--centered .review-number {
    color: var(--color-gold);
}

.review-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4.5vw, 3.8rem);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.15;
    color: var(--color-parchment);
    margin-bottom: 0.3rem;
}

.review-author {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2vw, 1.3rem);
    font-weight: 300;
    font-style: italic;
    color: var(--color-warm-gray);
    letter-spacing: 0.01em;
}

/* === Review Body === */
.review-body {
    margin-bottom: 1.5rem;
}

.review-excerpt {
    font-family: var(--font-body);
    font-size: clamp(0.9rem, 1.5vw, 1.05rem);
    font-weight: 400;
    line-height: 1.8;
    color: var(--color-parchment);
    opacity: 0.85;
    margin-bottom: 1.5rem;
}

/* === Rating === */
.review-rating {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.rating-stars {
    display: flex;
    gap: 0.15rem;
}

.star {
    font-size: 1rem;
    color: rgba(122, 117, 104, 0.3);
}

.star.filled {
    color: var(--color-gold);
    text-shadow: 0 0 8px rgba(201, 148, 58, 0.4);
}

.star.half {
    color: var(--color-gold);
    opacity: 0.5;
    text-shadow: 0 0 8px rgba(201, 148, 58, 0.2);
}

.rating-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-warm-gray);
    letter-spacing: 0.1em;
}

/* === Marginalia Notes === */
.review-marginalia {
    border-top: 1px solid rgba(122, 117, 104, 0.15);
    padding-top: 1rem;
}

.marginalia-note {
    font-family: var(--font-display);
    font-size: clamp(0.85rem, 1.3vw, 1rem);
    font-weight: 300;
    font-style: italic;
    color: var(--color-warm-gray);
    opacity: 0.7;
    display: block;
    padding-left: 1rem;
    border-left: 2px solid rgba(61, 216, 216, 0.2);
}

.review-card--shift-left .marginalia-note {
    border-left-color: rgba(139, 108, 199, 0.2);
}

.review-card--centered .marginalia-note {
    border-left-color: rgba(201, 148, 58, 0.2);
}

/* === Interstitial Dividers === */
.interstitial {
    display: flex;
    justify-content: center;
    padding: 2rem 0;
    opacity: 0.6;
}

.interstitial-line {
    filter: drop-shadow(0 0 2px currentColor);
}

/* === Footer === */
.site-footer {
    margin-top: 8rem;
    padding: 4rem 0 3rem;
    text-align: center;
}

.footer-inner {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.site-footer.revealed .footer-inner {
    opacity: 1;
    transform: translateY(0);
}

.footer-glow-line {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.footer-text {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--color-parchment);
    opacity: 0.6;
    margin-bottom: 0.5rem;
}

.footer-colophon {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 300;
    color: var(--color-warm-gray);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.4;
}

/* === Responsive === */
@media (max-width: 768px) {
    .book-spines {
        width: 30px;
    }

    .review-card--shift-right {
        margin-left: 0;
    }

    .review-card--shift-left {
        margin-right: 0;
    }

    .review-card--centered {
        margin-left: 0;
        margin-right: 0;
    }

    .content-river {
        padding: 0 1.5rem;
    }
}

@media (max-width: 480px) {
    .book-spines {
        display: none;
    }
}

/* === Subtle background noise texture via CSS === */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

/* === Scroll-linked background gradient === */
body {
    background: linear-gradient(
        180deg,
        var(--color-obsidian) 0%,
        var(--color-deep-charcoal) 30%,
        var(--color-charcoal) 60%,
        var(--color-deep-charcoal) 80%,
        var(--color-obsidian) 100%
    );
    background-attachment: fixed;
}