/* ============================================
   rinji.dev - Grainy Chrome Pastoral
   ============================================ */

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

:root {
    --bg-grain-silver: #e8edf3;
    --surface-chrome: #c8cfd9;
    --spine-mercury: #9ea8b5;
    --text-primary: #2a2d33;
    --text-secondary: #6b7280;
    --accent-neon: #7df9ff;
    --accent-warm: #ffb4c8;
    --dark-ground: #1e2028;
    --spine-highlight: #b0b8c4;

    --font-display: 'Josefin Sans', sans-serif;
    --font-body: 'Nunito Sans', sans-serif;
    --font-mono: 'Space Mono', monospace;

    --chrome-surface: linear-gradient(135deg, #c8cfd9, #e8edf3, #c8cfd9);
    --spine-gradient: linear-gradient(180deg, #b0b8c4 0%, #e8edf3 50%, #b0b8c4 100%);
    --neon-glow: 0 0 12px #7df9ff, 0 0 4px #7df9ff;
    --neon-glow-strong: 0 0 16px rgba(125, 249, 255, 0.5), 0 0 4px rgba(125, 249, 255, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-grain-silver);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    line-height: 1.85;
    letter-spacing: 0.01em;
    overflow-x: hidden;
}

/* --- Grain Overlay --- */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    filter: url(#grain);
    mix-blend-mode: multiply;
    opacity: 0.08;
    pointer-events: none;
    z-index: 1000;
}

/* --- Navigation Pill --- */
.nav-pill {
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    height: 48px;
    border-radius: 24px;
    background: var(--chrome-surface);
    display: flex;
    align-items: center;
    padding: 0 1.2rem;
    z-index: 900;
    overflow: hidden;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
    border: 1px solid var(--spine-mercury);
    cursor: pointer;
    gap: 0;
}

.nav-pill-label {
    font-family: var(--font-mono);
    font-size: clamp(0.75rem, 0.9vw, 0.875rem);
    letter-spacing: 0.05em;
    color: var(--text-primary);
    white-space: nowrap;
}

.nav-pill-mobile-label {
    display: none;
}

.nav-pill-links {
    display: flex;
    gap: 1rem;
    overflow: hidden;
    max-width: 0;
    opacity: 0;
    transition: max-width 0.4s ease, opacity 0.3s ease, margin-left 0.4s ease;
    margin-left: 0;
}

.nav-pill:hover .nav-pill-links,
.nav-pill.active .nav-pill-links {
    max-width: 400px;
    opacity: 1;
    margin-left: 1.2rem;
}

.nav-pill:hover,
.nav-pill.active {
    border-color: var(--accent-neon);
    box-shadow: var(--neon-glow);
}

.nav-link {
    font-family: var(--font-mono);
    font-size: clamp(0.7rem, 0.8vw, 0.8rem);
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    text-decoration: none;
    white-space: nowrap;
    transform: translateX(20px);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease, color 0.2s ease;
}

.nav-pill:hover .nav-link:nth-child(1),
.nav-pill.active .nav-link:nth-child(1) {
    transform: translateX(0);
    opacity: 1;
    transition-delay: 0ms;
}
.nav-pill:hover .nav-link:nth-child(2),
.nav-pill.active .nav-link:nth-child(2) {
    transform: translateX(0);
    opacity: 1;
    transition-delay: 60ms;
}
.nav-pill:hover .nav-link:nth-child(3),
.nav-pill.active .nav-link:nth-child(3) {
    transform: translateX(0);
    opacity: 1;
    transition-delay: 120ms;
}
.nav-pill:hover .nav-link:nth-child(4),
.nav-pill.active .nav-link:nth-child(4) {
    transform: translateX(0);
    opacity: 1;
    transition-delay: 180ms;
}

.nav-link:hover {
    color: var(--accent-neon);
}

/* --- Mobile Nav Overlay --- */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 32, 40, 0.95);
    z-index: 850;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.mobile-nav-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-nav-link {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 2rem;
    color: var(--bg-grain-silver);
    text-decoration: none;
    letter-spacing: 0.06em;
    transition: color 0.2s ease;
}

.mobile-nav-link:hover {
    color: var(--accent-neon);
}

/* --- Spread Layout --- */
.spread {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 4px 1fr;
    margin: 0 3rem;
    position: relative;
}

.spread-spine {
    background: var(--spine-gradient);
    position: relative;
}

#main-spine {
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.8s ease-out;
}

#main-spine.drawn {
    transform: scaleY(1);
}

#main-spine .spine-inner {
    position: absolute;
    inset: 0;
    box-shadow: 0 0 8px rgba(125, 249, 255, 0.3);
}

.spread-page {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

/* --- Section Dividers --- */
.section-divider {
    position: fixed;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--spine-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s ease-out, box-shadow 0.3s ease;
    z-index: 500;
    pointer-events: none;
}

.section-divider.drawn {
    transform: scaleX(1);
}

.section-divider.neon-flash {
    box-shadow: 0 0 8px var(--accent-neon);
}

/* --- Cover Spread --- */
.hero-title {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(3.5rem, 10vw, 8rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-primary);
    opacity: 0;
    transition: opacity 0.6s ease;
}

.hero-title.visible {
    opacity: 1;
}

.bubble-cluster {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

/* --- Manifesto Spread --- */
.section-heading {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(2rem, 5vw, 4rem);
    letter-spacing: 0.06em;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.manifesto-text {
    max-width: 38ch;
}

.manifesto-text p {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    line-height: 2.5rem;
    letter-spacing: 0.01em;
    color: var(--text-primary);
    hyphens: auto;
    text-align: justify;
}

.meadow-horizon {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.meadow-line-path,
.meadow-shadow-path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    transition: stroke-dashoffset 2s ease-out;
}

.meadow-line-path.drawn,
.meadow-shadow-path.drawn {
    stroke-dashoffset: 0;
}

/* --- Works Spread --- */
#works .spread-left,
#works .spread-right {
    padding-top: 2rem;
}

#works .spread-left .section-heading {
    margin-bottom: 1.5rem;
}

.works-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    width: 100%;
}

.work-card {
    background: var(--chrome-surface);
    border: 1px solid var(--spine-mercury);
    border-radius: 4px;
    padding: 1.8rem;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s ease, box-shadow 0.4s ease, transform 0.3s ease;
    cursor: pointer;
}

.work-card:hover {
    border-color: var(--accent-neon);
    box-shadow: var(--neon-glow-strong);
    transform: translateY(-4px);
}

.card-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.card-desc {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
}

.card-date {
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: clamp(0.75rem, 0.9vw, 0.875rem);
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.card-bubbles {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.card-bubble {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 35%, rgba(232, 237, 243, 0.8), transparent);
    border: 1px solid rgba(125, 249, 255, 0.4);
    opacity: 0;
    animation: bubbleRise 1.5s ease-out forwards;
}

@keyframes bubbleRise {
    0% {
        opacity: 0.7;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-120px);
    }
}

/* --- Process Spread --- */
.s-curve-timeline {
    width: 100%;
    height: 100%;
    max-height: 80vh;
}

.timeline-path {
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
    transition: stroke-dashoffset 3s ease-out;
}

.timeline-path.drawn {
    stroke-dashoffset: 0;
}

.timeline-milestone {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.timeline-milestone.visible {
    opacity: 1;
}

.milestone-label {
    font-family: 'Space Mono', monospace;
    font-size: 12px;
    letter-spacing: 0.05em;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.milestone-label.visible {
    opacity: 1;
}

.bubble-field {
    width: 100%;
    height: 100%;
    position: relative;
    min-height: 60vh;
}

.field-bubble {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 35%, rgba(232, 237, 243, 0.7), transparent 70%);
    border: 1px solid rgba(125, 249, 255, 0.3);
    pointer-events: none;
}

/* --- Contact / Closing Spread --- */
.spread-closing {
    grid-template-columns: 1fr var(--closing-spine-width, 4px) 1fr;
    transition: grid-template-columns 0.1s linear;
}

.closing-spine {
    background: var(--spine-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    min-width: 4px;
}

.closing-spine-content {
    text-align: center;
    opacity: 0;
    transition: opacity 0.5s ease;
    white-space: nowrap;
}

.closing-spine-content.visible {
    opacity: 1;
}

.closing-domain {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(1.2rem, 2vw, 2rem);
    letter-spacing: 0.08em;
    color: var(--bg-grain-silver);
    margin-bottom: 0.5rem;
}

.closing-left,
.closing-right {
    transition: opacity 0.3s ease;
}

.circuit-meadow {
    width: 80%;
    max-width: 300px;
    height: auto;
    margin: auto;
}

.circuit-meadow-path {
    stroke-dasharray: 1200;
    stroke-dashoffset: 1200;
    transition: stroke-dashoffset 4s ease-out;
}

.circuit-meadow-path.drawn {
    stroke-dashoffset: 0;
}

.closing-tagline {
    font-family: var(--font-body);
    font-weight: 400;
    font-style: italic;
    font-size: clamp(0.9rem, 1.2vw, 1.1rem);
    color: var(--surface-chrome);
    letter-spacing: 0.02em;
}

/* --- Responsive: Large Screens --- */
@media (min-width: 1400px) {
    .spread {
        margin: 0 5rem;
    }
}

/* --- Responsive: Mobile --- */
@media (max-width: 768px) {
    .spread {
        grid-template-columns: 1fr;
        margin: 0 1.5rem;
        min-height: auto;
    }

    .spread-spine {
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, #9ea8b5 0%, #e8edf3 50%, #9ea8b5 100%);
    }

    #main-spine {
        transform: scaleX(0);
        transform-origin: left;
    }

    #main-spine.drawn {
        transform: scaleX(1);
    }

    .spread-page {
        padding: 2rem 1rem;
    }

    .hero-title {
        text-align: center;
    }

    .bubble-cluster {
        position: relative;
        height: 300px;
    }

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

    .nav-pill-label {
        display: none;
    }

    .nav-pill-mobile-label {
        display: block;
        font-family: var(--font-mono);
        font-size: 1rem;
        color: var(--text-primary);
    }

    .nav-pill-links {
        display: none;
    }

    .nav-pill {
        width: 48px;
        height: 48px;
        border-radius: 50%;
        justify-content: center;
        padding: 0;
    }

    .mobile-nav-overlay {
        display: flex;
    }

    .spread-closing {
        grid-template-columns: 1fr;
    }

    .closing-spine {
        min-height: 300px;
        padding: 3rem 2rem;
    }

    .closing-spine-content {
        opacity: 1;
    }

    .closing-domain {
        color: var(--text-primary);
    }

    .s-curve-timeline {
        max-height: 500px;
    }

    .meadow-horizon {
        position: relative;
        height: 200px;
    }
}