/* ============================================
   continuum.quest v2 - Generative Mathematical

   Palette:
   Deep Void:      #0A0A14
   Graphite Slate:  #2E2E3A
   Theorem Gold:    #C8A94E
   Chalk Mist:      #D4D0C8
   Parchment Warm:  #F2EBD9
   Proof Ember:     #8B5E3C

   Fonts:
   Display:  Libre Baskerville (serif)
   Body:     Source Sans 3 (sans-serif)
   Code:     JetBrains Mono (monospace)
   ============================================ */

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

html {
    overflow-x: hidden;
}

body {
    background-color: #0A0A14;
    color: #D4D0C8;
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 300;
    font-size: clamp(16px, 1.8vw, 20px);
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Genesis Field --- */
.genesis-field {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: #0A0A14;
}

#genesis-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.genesis-title {
    position: relative;
    z-index: 2;
    font-family: 'Libre Baskerville', serif;
    font-style: italic;
    font-weight: 400;
    font-size: clamp(28px, 4vw, 56px);
    color: #C8A94E;
    letter-spacing: 0.02em;
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    transition: opacity 1.5s ease, transform 1.5s ease;
}

.genesis-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-chevron {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    opacity: 0;
}

.scroll-chevron.visible {
    animation: chevron-pulse 2s ease-in-out infinite;
}

@keyframes chevron-pulse {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.6; }
}

/* --- Sinusoidal Spine Marker (visible on scroll pause) --- */
.spine-line {
    position: fixed;
    top: 0;
    left: 50%;
    width: 1px;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity 0.8s ease;
    border-left: 0.5px dashed #2E2E3A;
}

.spine-line.visible {
    opacity: 0.4;
}

/* --- Axiom Blocks --- */
.axiom-block {
    position: relative;
    max-width: 42ch;
    margin: 0 auto;
    padding: 6rem 1.5rem;
    will-change: transform;
    transition: transform 0.1s linear;
}

.axiom-header {
    margin-bottom: 2rem;
}

.axiom-numeral {
    display: block;
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: clamp(24px, 3.5vw, 48px);
    color: #C8A94E;
    letter-spacing: 0.02em;
    margin-bottom: 0.75rem;
}

.axiom-rule {
    display: block;
    width: 100%;
    height: 2px;
    overflow: visible;
}

.axiom-rule line {
    stroke: #2E2E3A;
    stroke-width: 1;
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    transition: stroke-dashoffset 1.2s ease-out;
}

.axiom-rule.drawn line {
    stroke-dashoffset: 0;
}

.axiom-body p {
    margin-bottom: 2.4em;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.axiom-body p.visible {
    opacity: 1;
    transform: translateY(0);
}

.axiom-body p:last-child {
    margin-bottom: 0;
}

.axiom-body strong,
.axiom-body em {
    font-weight: 600;
    color: #F2EBD9;
}

/* --- Interstitial Canvases --- */
.interstitial-canvas {
    position: relative;
    width: 100%;
    height: 50vh;
    overflow: hidden;
    background-color: #0A0A14;
}

.gen-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.canvas-label {
    position: absolute;
    bottom: 16px;
    right: 24px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 400;
    font-size: 14px;
    letter-spacing: -0.02em;
    color: #D4D0C8;
    opacity: 0.6;
    pointer-events: none;
}

/* --- Convergence Field --- */
.convergence-field {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: #F2EBD9;
}

#convergence-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.convergence-text {
    position: relative;
    z-index: 2;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 2s ease, transform 2s ease;
}

.convergence-text.visible {
    opacity: 1;
    transform: translateY(0);
}

.convergence-statement {
    font-family: 'Libre Baskerville', serif;
    font-style: italic;
    font-weight: 400;
    font-size: clamp(32px, 5vw, 64px);
    color: #0A0A14;
    letter-spacing: 0.04em;
    margin-bottom: 0.5em;
}

.convergence-sub {
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 300;
    font-size: clamp(14px, 1.5vw, 18px);
    color: #2E2E3A;
    letter-spacing: 0.01em;
}

/* --- Responsive: Tablet --- */
@media (max-width: 768px) {
    .axiom-block {
        padding: 4rem 1.25rem;
    }

    .interstitial-canvas {
        height: 30vh;
    }
}

/* --- Responsive: Mobile --- */
@media (max-width: 480px) {
    .axiom-block {
        transform: none !important;
        padding: 3rem 1rem;
    }

    .interstitial-canvas {
        height: 30vh;
    }
}