/* ===========================================
   mujun.art — Scandinavian Generative Timeline
   =========================================== */

/* --- Design Color Palette (CSS Custom Properties) --- */
:root {
    /* Core palette */
    --color-charcoal: #2A2A30;
    --color-medium-grey: #5A5A60;
    --color-light-grey: #8A8A90;
    --color-scandi-white: #F8F8FA;
    --color-timeline-line: #B0B0B8;
    --color-generative-wash: #C0C0C8;
    --color-grid-line: #E0E0E4;
    --color-accent-blue: #5080B0;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 400;
    font-size: clamp(0.85rem, 1vw, 0.95rem);
    line-height: 1.85;
    color: var(--color-medium-grey);
    background-color: var(--color-scandi-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Tech Grid Underlay --- */
#tech-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(to right, var(--color-grid-line) 1px, transparent 1px),
        linear-gradient(to bottom, var(--color-grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
}

/* --- Hero Section --- */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

#hero::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 1px;
    height: 100%;
    background-color: var(--color-timeline-line);
    transform: translateX(-0.5px);
    transform-origin: top;
    animation: spineDrawDown 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes spineDrawDown {
    from {
        clip-path: inset(0 0 100% 0);
    }
    to {
        clip-path: inset(0 0 0% 0);
    }
}

#hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

#hero-title-wrapper {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#hero-title {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--color-charcoal);
    letter-spacing: 0.15em;
    margin-bottom: 0.5rem;
}

#hero-subtitle {
    font-family: 'Space Mono', monospace;
    font-weight: 400;
    font-size: clamp(0.7rem, 0.9vw, 0.85rem);
    color: var(--color-light-grey);
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

/* --- Timeline Section --- */
#timeline-section {
    position: relative;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem 6rem;
    z-index: 1;
}

/* Timeline Spine */
#timeline-spine {
    position: absolute;
    left: 50%;
    top: 0;
    width: 1px;
    height: 100%;
    background-color: var(--color-timeline-line);
    transform: translateX(-0.5px);
    z-index: 0;
}

/* --- Timeline Entry --- */
.timeline-entry {
    position: relative;
    width: 50%;
    padding: 2.5rem 0;
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.timeline-entry.timeline-left {
    padding-right: 3.5rem;
    text-align: right;
    transform: translateX(-60px);
}

.timeline-entry.timeline-right {
    margin-left: 50%;
    padding-left: 3.5rem;
    text-align: left;
    transform: translateX(60px);
}

.timeline-entry.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Timeline Marker (dot on spine) */
.timeline-marker {
    position: absolute;
    top: 3rem;
    z-index: 2;
}

.timeline-left .timeline-marker {
    right: -4px;
}

.timeline-right .timeline-marker {
    left: -4px;
}

.timeline-marker::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-timeline-line);
    transition: background-color 0.3s ease;
}

.timeline-entry.visible .timeline-marker::before {
    background-color: var(--color-accent-blue);
}

/* Timestamp */
.timeline-timestamp {
    font-family: 'Space Mono', monospace;
    font-weight: 400;
    font-size: 0.75rem;
    color: var(--color-light-grey);
    letter-spacing: 0.1em;
    position: absolute;
    white-space: nowrap;
}

.timeline-left .timeline-timestamp {
    right: 18px;
    top: -2px;
}

.timeline-right .timeline-timestamp {
    left: 18px;
    top: -2px;
}

/* --- Timeline Content --- */
.timeline-content {
    position: relative;
}

/* Generative Art Panel */
.generative-panel {
    position: relative;
    width: 100%;
    height: 200px;
    margin-bottom: 1.2rem;
    overflow: hidden;
    background-color: var(--color-scandi-white);
    border: 1px solid var(--color-grid-line);
}

.panel-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease 0.3s;
}

.timeline-entry.visible .panel-pattern {
    opacity: 1;
}

/* Pattern Variants */
[data-pattern="gradient-flow"] .panel-pattern {
    background:
        radial-gradient(ellipse at 20% 50%, rgba(192, 192, 200, 0.15) 0%, transparent 70%),
        radial-gradient(ellipse at 80% 30%, rgba(80, 128, 176, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 80%, rgba(192, 192, 200, 0.12) 0%, transparent 50%);
}

[data-pattern="dot-matrix"] .panel-pattern {
    background-image: radial-gradient(circle, #C0C0C8 1px, transparent 1px);
    background-size: 12px 12px;
    opacity: 0.4;
}

.timeline-entry.visible [data-pattern="dot-matrix"] .panel-pattern {
    opacity: 0.4;
}

[data-pattern="voronoi-cells"] .panel-pattern {
    background:
        linear-gradient(135deg, transparent 40%, rgba(192, 192, 200, 0.1) 40%, rgba(192, 192, 200, 0.1) 41%, transparent 41%),
        linear-gradient(225deg, transparent 40%, rgba(192, 192, 200, 0.1) 40%, rgba(192, 192, 200, 0.1) 41%, transparent 41%),
        linear-gradient(45deg, transparent 35%, rgba(192, 192, 200, 0.08) 35%, rgba(192, 192, 200, 0.08) 36%, transparent 36%),
        linear-gradient(315deg, transparent 35%, rgba(192, 192, 200, 0.08) 35%, rgba(192, 192, 200, 0.08) 36%, transparent 36%);
    background-size: 60px 60px;
}

[data-pattern="noise-field"] .panel-pattern {
    background:
        radial-gradient(circle at 10% 20%, rgba(80, 128, 176, 0.06) 0%, transparent 30%),
        radial-gradient(circle at 90% 80%, rgba(192, 192, 200, 0.1) 0%, transparent 25%),
        radial-gradient(circle at 50% 50%, rgba(42, 42, 48, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 30% 70%, rgba(80, 128, 176, 0.05) 0%, transparent 35%),
        radial-gradient(circle at 70% 20%, rgba(192, 192, 200, 0.08) 0%, transparent 30%);
}

[data-pattern="line-weave"] .panel-pattern {
    background:
        repeating-linear-gradient(45deg, transparent, transparent 8px, rgba(192, 192, 200, 0.08) 8px, rgba(192, 192, 200, 0.08) 9px),
        repeating-linear-gradient(-45deg, transparent, transparent 12px, rgba(192, 192, 200, 0.06) 12px, rgba(192, 192, 200, 0.06) 13px),
        repeating-linear-gradient(90deg, transparent, transparent 16px, rgba(80, 128, 176, 0.04) 16px, rgba(80, 128, 176, 0.04) 17px);
}

[data-pattern="grid-dissolve"] .panel-pattern {
    background-image:
        linear-gradient(to right, rgba(192, 192, 200, 0.12) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(192, 192, 200, 0.12) 1px, transparent 1px);
    background-size: 20px 20px;
}

[data-pattern="concentric-drift"] .panel-pattern {
    background:
        radial-gradient(circle at 48% 52%, transparent 30px, rgba(192, 192, 200, 0.06) 31px, transparent 32px),
        radial-gradient(circle at 52% 48%, transparent 55px, rgba(192, 192, 200, 0.06) 56px, transparent 57px),
        radial-gradient(circle at 49% 51%, transparent 80px, rgba(192, 192, 200, 0.06) 81px, transparent 82px),
        radial-gradient(circle at 51% 50%, transparent 105px, rgba(80, 128, 176, 0.04) 106px, transparent 107px),
        radial-gradient(circle at 50% 49%, transparent 130px, rgba(192, 192, 200, 0.05) 131px, transparent 132px);
}

[data-pattern="particle-settle"] .panel-pattern {
    background:
        radial-gradient(circle 1px, rgba(192, 192, 200, 0.3) 100%, transparent 100%) 5px 180px,
        radial-gradient(circle 1px, rgba(192, 192, 200, 0.25) 100%, transparent 100%) 15px 175px,
        radial-gradient(circle 1px, rgba(192, 192, 200, 0.2) 100%, transparent 100%) 28px 182px,
        radial-gradient(circle 1px, rgba(192, 192, 200, 0.3) 100%, transparent 100%) 42px 178px,
        radial-gradient(circle 1px, rgba(192, 192, 200, 0.15) 100%, transparent 100%) 55px 185px,
        linear-gradient(to top, rgba(192, 192, 200, 0.06) 0%, transparent 40%);
    background-repeat: no-repeat;
}

[data-pattern="flow-field"] .panel-pattern {
    background:
        repeating-linear-gradient(30deg, transparent, transparent 3px, rgba(192, 192, 200, 0.05) 3px, rgba(192, 192, 200, 0.05) 4px),
        repeating-linear-gradient(35deg, transparent, transparent 7px, rgba(80, 128, 176, 0.03) 7px, rgba(80, 128, 176, 0.03) 8px),
        repeating-linear-gradient(25deg, transparent, transparent 11px, rgba(192, 192, 200, 0.04) 11px, rgba(192, 192, 200, 0.04) 12px);
}

[data-pattern="fractal-branch"] .panel-pattern {
    background:
        linear-gradient(180deg, transparent 48%, rgba(192, 192, 200, 0.1) 48%, rgba(192, 192, 200, 0.1) 49%, transparent 49%),
        linear-gradient(150deg, transparent 45%, rgba(192, 192, 200, 0.07) 45%, rgba(192, 192, 200, 0.07) 46%, transparent 46%),
        linear-gradient(210deg, transparent 45%, rgba(192, 192, 200, 0.07) 45%, rgba(192, 192, 200, 0.07) 46%, transparent 46%),
        linear-gradient(135deg, transparent 55%, rgba(80, 128, 176, 0.04) 55%, rgba(80, 128, 176, 0.04) 56%, transparent 56%),
        linear-gradient(225deg, transparent 55%, rgba(80, 128, 176, 0.04) 55%, rgba(80, 128, 176, 0.04) 56%, transparent 56%);
}

/* Entry Typography */
.entry-title {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: clamp(1.1rem, 1.8vw, 1.4rem);
    color: var(--color-charcoal);
    margin-bottom: 0.6rem;
    letter-spacing: 0.02em;
}

.entry-description {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 300;
    font-size: clamp(0.8rem, 0.95vw, 0.9rem);
    color: var(--color-medium-grey);
    line-height: 1.85;
    margin-bottom: 0.8rem;
}

.entry-medium {
    font-family: 'Space Mono', monospace;
    font-weight: 400;
    font-size: 0.7rem;
    color: var(--color-light-grey);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* --- Footer --- */
#site-footer {
    position: relative;
    width: 100%;
    padding: 4rem 2rem;
    text-align: center;
    z-index: 1;
}

#footer-spine {
    position: absolute;
    left: 50%;
    top: 0;
    width: 1px;
    height: 3rem;
    background-color: var(--color-timeline-line);
    transform: translateX(-0.5px);
}

#footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    padding-top: 2rem;
}

#footer-name {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--color-charcoal);
    letter-spacing: 0.2em;
}

#footer-year {
    font-family: 'Space Mono', monospace;
    font-weight: 400;
    font-size: 0.7rem;
    color: var(--color-light-grey);
    letter-spacing: 0.1em;
}

#footer-note {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 300;
    font-size: 0.7rem;
    color: var(--color-timeline-line);
    letter-spacing: 0.05em;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    #timeline-section {
        padding: 0 1.5rem 4rem;
    }

    #timeline-spine {
        left: 2rem;
    }

    .timeline-entry {
        width: 100%;
        padding-left: 3.5rem;
        padding-right: 0;
        text-align: left;
    }

    .timeline-entry.timeline-left {
        padding-right: 0;
        padding-left: 3.5rem;
        text-align: left;
        transform: translateX(-40px);
    }

    .timeline-entry.timeline-right {
        margin-left: 0;
        padding-left: 3.5rem;
        transform: translateX(-40px);
    }

    .timeline-left .timeline-marker,
    .timeline-right .timeline-marker {
        left: calc(-3.5rem + 2rem - 4px);
        right: auto;
    }

    .timeline-left .timeline-timestamp,
    .timeline-right .timeline-timestamp {
        left: 18px;
        right: auto;
    }

    #hero::before {
        left: 2rem;
    }

    #hero-content {
        padding-left: 3.5rem;
        text-align: left;
    }

    #footer-spine {
        left: 2rem;
    }

    .generative-panel {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .generative-panel {
        height: 120px;
    }

    .timeline-entry {
        padding: 1.5rem 0 1.5rem 3rem;
    }

    .timeline-entry.timeline-left,
    .timeline-entry.timeline-right {
        padding-left: 3rem;
    }
}

/* --- Generative Canvas Overlay --- */
.generative-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* --- Accent Line on hover --- */
.timeline-entry .timeline-content::after {
    content: '';
    display: block;
    width: 0;
    height: 1px;
    background-color: var(--color-accent-blue);
    margin-top: 1rem;
    transition: width 0.4s ease;
}

.timeline-left .timeline-content::after {
    margin-left: auto;
}

.timeline-entry:hover .timeline-content::after {
    width: 60px;
}

/* --- Selection color --- */
::selection {
    background-color: var(--color-accent-blue);
    color: var(--color-scandi-white);
}