/* historygrapher.net - Mid-century modern historicism */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --void: #111113;
    --primary-text: #e8e6e3;
    --secondary-text: #8a8a8e;
    --tertiary-text: #555558;
    --divider: #3a3a3f;
    --spectral: #c8c8ff;
    --spectral-light: #e8e8ff;
    --hover: #ffffff;
    --muted: #555555;
    --spectral-glow-low: rgba(200, 200, 255, 0.15);
    --spectral-glow-high: rgba(200, 200, 255, 0.35);
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--void);
    color: var(--primary-text);
    font-family: 'DM Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    line-height: 1.7;
    letter-spacing: 0.01em;
    overflow-x: hidden;
}

/* Blur-focus base state */
.blur-focus {
    opacity: 0;
    filter: blur(8px);
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                filter 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.blur-focus.revealed {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
}

/* Stratum I - Epoch Header */
#stratum-i {
    height: 100vh;
    position: relative;
    padding: clamp(3rem, 8vw, 8rem);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.epoch-header {
    position: relative;
    z-index: 2;
}

.site-title {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: clamp(3rem, 6vw, 5.5rem);
    letter-spacing: -0.01em;
    line-height: 1.1;
    color: var(--primary-text);
    opacity: 0;
    filter: blur(12px);
    transition: opacity 1.8s ease, filter 1.8s ease;
}

.site-title.revealed {
    opacity: 1;
    filter: blur(0);
}

.hairline-rule {
    display: flex;
    align-items: center;
    margin-top: 1.5rem;
    opacity: 0;
    transition: opacity 0.6s ease 2s;
}

.hairline-rule.revealed {
    opacity: 1;
}

.rule-line {
    height: 1px;
    background: #e0e0e0;
    width: 70%;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1.2s ease-out 2.2s;
}

.rule-line.revealed {
    transform: scaleX(1);
}

.diamond-marker {
    width: 8px;
    height: 8px;
    border: 1px solid var(--divider);
    transform: rotate(45deg);
    margin-left: 12px;
    transition: box-shadow 0.6s ease, border-color 0.6s ease;
}

.diamond-marker:hover {
    box-shadow: 0 0 8px 2px rgba(200, 200, 255, 0.25);
    border-color: var(--spectral);
}

.subtitle {
    font-family: 'DM Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    color: var(--secondary-text);
    margin-top: 1rem;
    letter-spacing: 0.01em;
    opacity: 0;
    transition: opacity 1s ease 3s;
}

.subtitle.revealed {
    opacity: 1;
}

/* Crystal Wireframe */
.crystal-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    z-index: 1;
}

.crystal-wireframe {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: crystal-rotate 300s linear infinite;
    opacity: 0;
    transition: opacity 2s ease 1s;
}

.crystal-wireframe.revealed {
    opacity: 1;
}

@keyframes crystal-rotate {
    from { transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg); }
    to { transform: rotateX(360deg) rotateY(360deg) rotateZ(360deg); }
}

.crystal-edge {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 1px;
    background: linear-gradient(to right, rgba(200,200,255,0.4), rgba(200,200,255,0.1));
    box-shadow: 0 0 6px 1px rgba(200,200,255,0.15);
    border-color: #e8e8ff;
    transform-origin: 0 0;
    will-change: transform;
}

.edge-1  { transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg) translateX(-60px); }
.edge-2  { transform: rotateX(60deg) rotateY(0deg) rotateZ(30deg) translateX(-60px); }
.edge-3  { transform: rotateX(120deg) rotateY(0deg) rotateZ(60deg) translateX(-60px); }
.edge-4  { transform: rotateX(180deg) rotateY(0deg) rotateZ(90deg) translateX(-60px); }
.edge-5  { transform: rotateX(0deg) rotateY(60deg) rotateZ(120deg) translateX(-60px); }
.edge-6  { transform: rotateX(60deg) rotateY(60deg) rotateZ(150deg) translateX(-60px); }
.edge-7  { transform: rotateX(120deg) rotateY(60deg) rotateZ(180deg) translateX(-60px); }
.edge-8  { transform: rotateX(0deg) rotateY(120deg) rotateZ(210deg) translateX(-60px); }
.edge-9  { transform: rotateX(60deg) rotateY(120deg) rotateZ(240deg) translateX(-60px); }
.edge-10 { transform: rotateX(120deg) rotateY(120deg) rotateZ(270deg) translateX(-60px); }
.edge-11 { transform: rotateX(0deg) rotateY(180deg) rotateZ(300deg) translateX(-60px); }
.edge-12 { transform: rotateX(60deg) rotateY(180deg) rotateZ(330deg) translateX(-60px); }

/* Watermarks */
.watermark {
    position: absolute;
    font-family: 'Playfair Display', serif;
    font-size: clamp(8rem, 20vw, 16rem);
    color: rgba(255, 255, 255, 0.03);
    font-weight: 700;
    pointer-events: none;
    z-index: 0;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    will-change: transform;
}

/* Stratum II - Diagonal Transit */
#stratum-ii {
    min-height: 40vh;
    padding: clamp(4rem, 10vh, 10rem) clamp(3rem, 8vw, 8rem);
    position: relative;
}

.diagonal-content {
    margin-left: 15vw;
    display: flex;
    align-items: flex-start;
    gap: 2rem;
}

.crystal-icons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding-top: 15px;
}

.diamond-marker.small {
    width: 6px;
    height: 6px;
}

.pull-quote {
    font-family: 'Playfair Display', serif;
    font-weight: 400;
    font-style: italic;
    font-size: clamp(1.8rem, 4vw, 3rem);
    color: #b0b0b0;
    line-height: 1.3;
    max-width: 60%;
    border: none;
    padding: 0;
}

/* Stratum III - Archive Row */
#stratum-iii {
    min-height: 60vh;
    padding: clamp(4rem, 10vh, 10rem) clamp(3rem, 8vw, 8rem);
    position: relative;
}

.archive-row {
    display: flex;
    gap: clamp(2rem, 4vw, 4rem);
    flex-wrap: wrap;
}

.archive-block {
    flex: 1;
    min-width: 250px;
    border-top: 2px solid var(--primary-text);
    padding-top: 1.5rem;
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                filter 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                border-color 3s ease;
}

.archive-date {
    font-family: 'Space Mono', monospace;
    font-size: clamp(0.7rem, 0.9vw, 0.85rem);
    letter-spacing: 0.08em;
    color: var(--tertiary-text);
}

.archive-title {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: clamp(1.4rem, 3vw, 2.8rem);
    letter-spacing: -0.01em;
    line-height: 1.1;
    margin-top: 0.5rem;
    color: var(--primary-text);
}

.archive-desc {
    color: var(--secondary-text);
    margin-top: 0.75rem;
    line-height: 1.7;
}

/* Stratum IV - Timeline */
#stratum-iv {
    min-height: 80vh;
    padding: clamp(4rem, 10vh, 10rem) clamp(3rem, 8vw, 8rem);
    display: flex;
    align-items: center;
    position: relative;
}

.timeline-container {
    width: 100%;
}

#timeline-svg {
    width: 100%;
    height: auto;
}

#timeline-path {
    stroke: #888888;
    stroke-width: 0.5;
    fill: none;
}

.timeline-node {
    fill: var(--divider);
    stroke: var(--secondary-text);
    stroke-width: 0.5;
    transition: filter 0.6s ease;
}

.timeline-node.node-major {
    fill: var(--tertiary-text);
    filter: drop-shadow(0 0 6px rgba(200, 200, 255, 0.3));
}

.timeline-node.pulse {
    filter: drop-shadow(0 0 12px rgba(200, 200, 255, 0.6));
}

.timeline-label {
    font-family: 'Space Mono', monospace;
    font-size: 11px;
    fill: var(--tertiary-text);
    letter-spacing: 0.08em;
}

/* Stratum V - Coda */
#stratum-v {
    min-height: 40vh;
    padding: clamp(4rem, 10vh, 10rem) clamp(3rem, 8vw, 8rem);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.coda-content {
    text-align: center;
}

.coda-text {
    font-family: 'Playfair Display', serif;
    font-weight: 400;
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    color: #999999;
}

.coda-diamond {
    margin: 2rem auto 0;
    animation: pulse-diamond 4s ease-in-out infinite;
}

@keyframes pulse-diamond {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.7; }
}

.site-footer {
    margin-top: 80px;
    font-family: 'DM Sans', sans-serif;
    font-weight: 300;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #555555;
    display: flex;
    gap: 1rem;
    align-items: center;
}

.footer-sep {
    font-size: 0.5rem;
}