/* ============================================
   IMMEDIACY ABOUT PAGE
   B&W • White Glow • Matching Homepage Aesthetic
   ============================================ */

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

:root {
    --bg: #000000;
    --text: #ffffff;
    --text-dim: rgba(255, 255, 255, 0.55);
    --border: rgba(255, 255, 255, 0.1);
    --card-bg: rgba(255, 255, 255, 0.04);
    --font-serif: 'Cormorant Garamond', Georgia, serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-serif);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--text);
    text-decoration: none;
    transition: opacity 0.2s;
}

a:hover {
    opacity: 0.7;
}

strong {
    font-weight: 600;
}

/* ---------- Canvas ---------- */
#particle-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

/* ---------- Nav ---------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 2rem;
    backdrop-filter: blur(16px);
    background: rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-logo {
    font-size: 1.2rem;
    font-weight: 300;
    letter-spacing: 0.35em;
}

.nav-link {
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    opacity: 0.7;
}

/* ---------- Progress ---------- */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.6);
    z-index: 200;
    width: 0%;
    transition: width 0.1s linear;
}

/* ---------- Sections ---------- */
.section {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(5rem, 12vh, 9rem) clamp(1.5rem, 5vw, 6rem);
}

.section__inner {
    max-width: 800px;
    width: 100%;
}

.section__eyebrow {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.4;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(16px);
    transition: all 0.8s ease;
}

.section__title {
    font-size: clamp(1.8rem, 4.5vw, 3.2rem);
    font-weight: 300;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateY(24px);
    transition: all 0.9s ease 0.1s;
}

.section__sub {
    font-size: 1rem;
    color: var(--text-dim);
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(16px);
    transition: all 0.8s ease 0.2s;
}

.section.visible .section__eyebrow,
.section.visible .section__title,
.section.visible .section__sub {
    opacity: 1;
    transform: translateY(0);
}

.section.visible .section__eyebrow {
    opacity: 0.4;
}

/* ---------- Cards ---------- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease 0.15s;
}

.section.visible .card {
    opacity: 1;
    transform: translateY(0);
}

.card h3 {
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: 0.8rem;
}

.card h4 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
}

.card p {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.7;
}

.card--wide {
    max-width: 100%;
}

.card__row {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.card__footer {
    margin-top: 1rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--border);
}

.highlight {
    margin-top: 0.5rem;
    font-size: 1.05rem;
    color: var(--text);
}

/* ---------- Pills ---------- */
.pill {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    padding: 0.5rem 1.2rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text-dim);
}

.pill--sm {
    font-size: 0.65rem;
    padding: 0.3rem 0.7rem;
}

.pill--muted {
    opacity: 0.5;
}

.pillars {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    justify-content: center;
    margin: 2rem 0;
    opacity: 0;
    transition: opacity 1s ease 0.5s;
}

.section.visible .pillars {
    opacity: 1;
}

.thesis {
    text-align: center;
    font-size: 1.3rem;
    line-height: 1.6;
    margin-top: 2rem;
    opacity: 0;
    transform: translateY(16px);
    transition: all 0.9s ease 0.4s;
}

.section.visible .thesis {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Split ---------- */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ---------- Grid 3 ---------- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

/* ---------- Timeline ---------- */
.timeline {
    position: relative;
    padding: 1.5rem 0 1.5rem 50px;
}

.timeline__line {
    position: absolute;
    left: 16px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), transparent);
    opacity: 0;
    transform: scaleY(0);
    transform-origin: top;
    transition: all 1.2s ease;
}

.section.visible .timeline__line {
    opacity: 1;
    transform: scaleY(1);
}

.timeline__node {
    position: relative;
    margin-bottom: 1.5rem;
}

.timeline__dot {
    position: absolute;
    left: -42px;
    top: 1rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.15);
}

/* ---------- Blockquote ---------- */
.blockquote {
    margin-top: 2rem;
    padding: 1.5rem;
    border-left: 2px solid rgba(255, 255, 255, 0.2);
    opacity: 0;
    transform: translateX(-16px);
    transition: all 0.8s ease 0.4s;
}

.section.visible .blockquote {
    opacity: 1;
    transform: translateX(0);
}

.blockquote p {
    font-style: italic;
    font-size: 1rem;
    line-height: 1.8;
}

.blockquote cite {
    display: block;
    margin-top: 0.6rem;
    font-size: 0.8rem;
    opacity: 0.5;
    font-style: normal;
}

/* ---------- Vector list ---------- */
.vector-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

/* ---------- Code block ---------- */
.code-block {
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.02);
    opacity: 0;
    transform: translateY(16px);
    transition: all 0.8s ease 0.2s;
}

.section.visible .code-block {
    opacity: 1;
    transform: translateY(0);
}

.code-block pre {
    padding: 1.5rem;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.7);
    overflow-x: auto;
}

/* ---------- Hero ---------- */
.section--hero {
    text-align: center;
    min-height: 100vh;
}

.hero__title {
    font-size: clamp(2.2rem, 6vw, 4.5rem);
    font-weight: 300;
    line-height: 1.15;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeUp 1.2s ease 0.3s forwards;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.scroll-hint {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-dim);
    animation: fadeUp 1s ease 2s forwards;
    opacity: 0;
}

.scroll-hint__line {
    width: 1px;
    height: 28px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.5), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {

    0%,
    100% {
        opacity: 0.3;
        transform: scaleY(1);
    }

    50% {
        opacity: 1;
        transform: scaleY(1.3);
    }
}

/* ---------- Closing ---------- */
.section--closing {
    text-align: center;
}

.closing__title {
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 300;
    line-height: 1.4;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(24px);
    transition: all 1s ease;
}

.section.visible .closing__title {
    opacity: 1;
    transform: translateY(0);
}

.closing__body {
    font-size: 1rem;
    color: var(--text-dim);
    max-width: 580px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
    opacity: 0;
    transition: all 0.8s ease 0.3s;
}

.section.visible .closing__body {
    opacity: 1;
}

.closing__couplet {
    margin-bottom: 2.5rem;
    opacity: 0;
    transition: all 0.8s ease 0.5s;
}

.section.visible .closing__couplet {
    opacity: 1;
}

.closing__couplet p {
    font-size: 1.2rem;
    color: var(--text-dim);
    margin-bottom: 0.3rem;
}

.closing__final {
    font-size: 1.5rem !important;
    color: var(--text) !important;
}

.cta-link {
    display: inline-block;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    padding: 0.8rem 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    opacity: 0;
    transition: all 0.4s ease;
}

.section.visible .cta-link {
    opacity: 0.7;
    transition-delay: 0.7s;
}

.cta-link:hover {
    opacity: 1;
    border-color: rgba(255, 255, 255, 0.5);
}

/* ---------- Footer ---------- */
.footer {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    padding: 2rem 2.5rem;
    font-size: 0.8rem;
    color: var(--text-dim);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ---------- Sunset glow (from homepage) ---------- */
.section--closing::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background:
        radial-gradient(ellipse 120% 60% at 50% 100%,
            rgba(255, 255, 255, 0.15) 0%,
            rgba(255, 255, 255, 0.06) 30%,
            transparent 60%);
    pointer-events: none;
    z-index: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .split {
        grid-template-columns: 1fr;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .pillars {
        flex-direction: column;
        align-items: center;
    }

    .section {
        padding: 4rem 1.2rem;
    }

    .nav {
        padding: 1rem 1.2rem;
    }
}