/* ========================================
   L.U.R.E — NordSea Biomaterials Lab
   Gorpcore / Urban Aesthetic
   ======================================== */

:root {
    /* Color Palette */
    --green-dark: #1a2f23;
    --green-mid: #2d4a3a;
    --green-light: #4a6b52;
    --green-olive: #5c6b4a;

    --orange-bright: #ff6b35;
    --orange-saturated: #ff8c42;
    --yellow-warm: #ffc857;
    --red-vivid: #e63946;

    --concrete-dark: #1a1a1a;
    --concrete-mid: #2a2a2a;
    --concrete-light: #3a3a3a;
    --concrete-pale: #8a8a8a;

    --white: #f5f5f0;
    --white-pure: #ffffff;

    /* Typography */
    --font-primary: 'Space Grotesk', sans-serif;
    --font-mono: 'Space Mono', monospace;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
}

/* Loader */
#loader {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    transition: opacity 0.5s ease;
}

#loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.fish-loader {
    animation: swim 1.5s ease-in-out infinite;
}

@keyframes swim {
    0%, 100% { transform: translateX(-5px) rotate(-2deg); }
    50% { transform: translateX(5px) rotate(2deg); }
}

.loader-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--orange-bright);
    letter-spacing: 0.1em;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--concrete-dark);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 3D Canvas Background */
#lure-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    transition: z-index 0s;
}

/* Canvas visible during packaging (behind tube outlines) */
body.packaging-mode #lure-canvas {
    z-index: 2;
}

/* Footer visible at the end */
.footer {
    position: relative;
    z-index: 1;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    z-index: 100;
    mix-blend-mode: difference;
}

.nav-logo {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.logo-text {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--white);
}

.logo-tm {
    font-size: 0.9rem;
    position: relative;
    top: 0.35em;
    color: var(--orange-bright);
    font-weight: 500;
}

.nav-lab {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--concrete-pale);
}

/* Main Content */
main {
    position: relative;
    z-index: 1;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 800px;
}

.hero-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--orange-bright);
    margin-bottom: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--orange-bright);
    display: inline-block;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 6rem);
    font-weight: 300;
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--orange-bright);
    font-weight: 600;
}

.hero-subtitle {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--concrete-pale);
    letter-spacing: 0.1em;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.scroll-indicator span {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--concrete-pale);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--orange-bright), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* Intro Section */
.intro {
    padding: var(--space-xl) 0;
    background: linear-gradient(to bottom, transparent, rgba(45, 74, 58, 0.1));
}

.intro-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.intro-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--green-light);
    padding-top: 0.5rem;
}

.intro-text {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 300;
    line-height: 1.4;
    color: var(--white);
}

.intro-text strong {
    color: var(--orange-bright);
    font-weight: 500;
}

/* Material Section */
.material {
    padding: var(--space-xl) 0;
    background: var(--concrete-mid);
}

.material-header,
.specs-header,
.action-header,
.aesthetic-header,
.gallery-header {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.section-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--orange-bright);
    opacity: 0.7;
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 400;
    letter-spacing: -0.02em;
}

.material-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-xl);
}

.material-text.large {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 300;
    line-height: 1.5;
}

.material-text em {
    color: var(--green-light);
    font-style: normal;
    font-weight: 500;
}

.material-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding-left: var(--space-lg);
    border-left: 1px solid var(--concrete-light);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.detail-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--concrete-pale);
}

.detail-value {
    font-size: 1rem;
    color: var(--white);
}

/* Specs Section */
.specs {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, var(--green-dark), var(--concrete-dark));
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.spec-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--space-lg);
    transition: all 0.3s ease;
}

.spec-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--orange-bright);
    transform: translateY(-4px);
}

.spec-icon {
    font-size: 1.5rem;
    color: var(--orange-bright);
    margin-bottom: var(--space-md);
}

.spec-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    letter-spacing: 0.05em;
}

.spec-card p,
.spec-card ul {
    font-size: 0.875rem;
    color: var(--concrete-pale);
    line-height: 1.7;
}

.color-list {
    list-style: none;
}

.color-list li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.color-dot.orange { background: var(--orange-bright); }
.color-dot.olive { background: var(--green-olive); }
.color-dot.red { background: var(--red-vivid); }

/* Action Section */
.action {
    padding: var(--space-xl) 0;
    background: var(--concrete-dark);
}

.action-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.action-type {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.type-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--concrete-pale);
}

.type-value {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--orange-bright);
}

.action-description h3 {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--green-light);
}

.action-description p {
    color: var(--concrete-pale);
    line-height: 1.7;
}

.species-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--concrete-pale);
    display: block;
    margin-bottom: var(--space-sm);
}

.species-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255, 107, 53, 0.1);
    border: 1px solid rgba(255, 107, 53, 0.3);
    color: var(--orange-bright);
}

/* Aesthetic Section */
.aesthetic {
    padding: var(--space-xl) 0;
    background: linear-gradient(to bottom, var(--concrete-dark), var(--green-dark));
}

.aesthetic-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.aesthetic-item {
    text-align: center;
}

.aesthetic-texture {
    width: 100%;
    aspect-ratio: 1;
    margin-bottom: var(--space-sm);
    border: 1px solid var(--concrete-light);
}

.aesthetic-texture.concrete {
    background:
        repeating-linear-gradient(
            90deg,
            var(--concrete-mid) 0px,
            var(--concrete-mid) 2px,
            var(--concrete-light) 2px,
            var(--concrete-light) 4px
        ),
        linear-gradient(180deg, var(--concrete-dark), var(--concrete-mid));
    background-blend-mode: overlay;
}

.aesthetic-texture.goretex {
    background:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.1) 0%, transparent 50%),
        linear-gradient(45deg, var(--green-dark), var(--green-mid));
    position: relative;
}

.aesthetic-texture.goretex::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.15'/%3E%3C/svg%3E");
}

.aesthetic-texture.scales {
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 8px,
            rgba(255, 107, 53, 0.2) 8px,
            rgba(255, 107, 53, 0.2) 9px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 12px,
            rgba(255, 107, 53, 0.1) 12px,
            rgba(255, 107, 53, 0.1) 13px
        ),
        var(--green-olive);
}

.aesthetic-item span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--concrete-pale);
}

.aesthetic-mood {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border: 1px solid var(--concrete-light);
    background: rgba(0, 0, 0, 0.3);
}

.mood-text {
    font-size: 1.25rem;
    font-weight: 300;
    letter-spacing: 0.05em;
}

.color-palette {
    display: flex;
    gap: var(--space-xs);
}

.palette-swatch {
    width: 60px;
    height: 60px;
}

.palette-swatch.green {
    background: linear-gradient(135deg, var(--green-dark), var(--green-light));
}

.palette-swatch.orange {
    background: linear-gradient(135deg, var(--orange-bright), var(--yellow-warm));
}

/* Gallery Section */
.gallery {
    padding: var(--space-xl) 0;
    background: linear-gradient(to bottom, var(--concrete-dark), var(--green-dark));
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 280px);
    gap: var(--space-md);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    background: var(--concrete-mid);
    border: 1px solid var(--concrete-light);
    transition: all 0.3s ease;
}

.gallery-item:hover {
    border-color: var(--orange-bright);
    transform: scale(1.02);
}

.gallery-item.large {
    grid-row: span 2;
}

.gallery-item.wide {
    grid-column: span 2;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background:
        linear-gradient(45deg, var(--concrete-mid) 25%, transparent 25%),
        linear-gradient(-45deg, var(--concrete-mid) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--concrete-mid) 75%),
        linear-gradient(-45deg, transparent 75%, var(--concrete-mid) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    background-color: var(--concrete-dark);
}

.placeholder-icon {
    font-size: 2rem;
    color: var(--concrete-light);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--concrete-light);
    border-radius: 50%;
}

.placeholder-text {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--concrete-pale);
}

.gallery-note {
    margin-top: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--concrete-pale);
    text-align: center;
    font-style: italic;
}

@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }

    .gallery-item {
        min-height: 200px;
    }

    .gallery-item.large {
        grid-row: span 1;
    }

    .gallery-item.wide {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .gallery-item.wide {
        grid-column: span 1;
    }
}

/* Packaging Section */
.packaging {
    height: 150vh; /* Height for scroll-driven animation */
    position: relative;
    background: var(--concrete-dark);
    overflow: hidden;
}

.packaging-content {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tube-container {
    position: fixed;
    top: 45%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tube-container.visible {
    opacity: 1;
}

/* Fish appears inside tube (canvas z-index 5, tube z-index 3) */

.tube-svg {
    width: 120px;
    height: 240px;
    opacity: 1;
}

/* Responsive tube sizes */
@media (min-width: 768px) {
    .tube-svg {
        width: 150px;
        height: 300px;
    }
}

@media (min-width: 1200px) {
    .tube-svg {
        width: 180px;
        height: 360px;
    }
}

.tube-body,
.tube-bottom {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    transition: stroke-dashoffset 0.5s ease-out;
}

.tube-container.visible .tube-body,
.tube-container.visible .tube-bottom {
    stroke-dashoffset: 0;
}

.tube-cap {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.packaging-text {
    position: fixed;
    bottom: 25%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 10;
    pointer-events: none;
}

.packaging-text.visible {
    opacity: 1;
}

.packaging-label {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--orange-bright);
}

/* Footer */
.footer {
    padding: var(--space-xl) 0 var(--space-lg);
    background: var(--concrete-dark);
    border-top: 1px solid var(--concrete-light);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-lg);
    align-items: end;
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: var(--space-xs);
}

.footer-tagline {
    font-size: 0.75rem;
    color: var(--concrete-pale);
}

.footer-lab {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--concrete-pale);
}

.footer-lab span {
    display: block;
}

.footer-note {
    text-align: right;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--orange-bright);
    opacity: 0.7;
}

.footer-signature {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--white);
    opacity: 0.5;
    margin-top: var(--space-xs);
}

/* Responsive */
@media (max-width: 1024px) {
    .intro-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .material-content {
        grid-template-columns: 1fr;
    }

    .material-details {
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--concrete-light);
        padding-top: var(--space-lg);
        flex-direction: row;
        flex-wrap: wrap;
    }

    .action-content {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-md);
    }

    .footer-lab, .footer-note {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav {
        padding: var(--space-sm) var(--space-md);
    }

    .container {
        padding: 0 var(--space-md);
    }

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

    .aesthetic-mood {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}