/* ════════════════════════════════════════════
   RESET & TOKENS
════════════════════════════════════════════ */
*, *::before, *::after {
    margin: 0; padding: 0; box-sizing: border-box;
    cursor: none;
}

:root {
    --bg: #0a0a0a;
    --bg2: #111111;
    --text: #f0ede6;
    --muted: #7a7872;
    --accent: #c8f23a;    /* Lime-green — like Oryzo CTA */
    --accent2: #ff3d3d;
    --border: rgba(240,237,230,0.1);
    --font-serif: 'DM Serif Display', Georgia, serif;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'Space Mono', monospace;
    --ease: cubic-bezier(0.76, 0, 0.24, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
}

/* ════════════════════════════════════════════
   CANVAS BG (WebGL noise / particle field)
════════════════════════════════════════════ */
#bg-canvas {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    opacity: 0.35;
}

/* ════════════════════════════════════════════
   CUSTOM CURSOR
════════════════════════════════════════════ */
.cursor {
    width: 12px; height: 12px;
    background: var(--accent);
    border-radius: 50%;
    position: fixed;
    top: 0; left: 0;
    pointer-events: none;
    z-index: 10000;
    mix-blend-mode: difference;
    /* No CSS transform here — GSAP handles position via xPercent/yPercent */
    transition: width 0.3s, height 0.3s;
    will-change: transform;
}
.cursor.grow { width: 48px; height: 48px; }

/* ════════════════════════════════════════════
   NAV
════════════════════════════════════════════ */
#navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 3rem;
    transition: background 0.4s;
}
#navbar.scrolled {
    background: rgba(10,10,10,0.85);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    letter-spacing: 2px;
    color: var(--accent);
}

.nav-links {
    display: flex; gap: 2.5rem; list-style: none;
}
.nav-links a {
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 1px;
    color: var(--muted);
    text-transform: uppercase;
    transition: color 0.3s;
}
.nav-links a:hover { color: var(--text); }

.nav-btn {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-decoration: none;
    background: var(--accent);
    color: #000;
    padding: 0.6rem 1.4rem;
    border-radius: 100px;
    transition: transform 0.3s var(--ease), background 0.3s;
    font-weight: 700;
}
.nav-btn:hover { transform: scale(1.06); background: #d8ff4a; }

/* ════════════════════════════════════════════
   HERO
════════════════════════════════════════════ */
#hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 0 3rem 3rem;
    z-index: 1;
    overflow: hidden;
}

.hero-eyebrow {
    position: absolute;
    top: 7rem; left: 3rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 3px;
    color: var(--muted);
    text-transform: uppercase;
}

.hero-heading {
    font-family: var(--font-serif);
    font-size: clamp(3.5rem, 8vw, 9rem);
    line-height: 1.0;
    color: var(--text);
    position: relative;
    z-index: 2;
    /* opacity/transform managed by GSAP to avoid invisible elements on slow loads */
}
.hero-heading em { color: var(--accent); font-style: italic; }

.hero-tag {
    position: absolute;
    top: 7rem; right: 3rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 2px;
    color: var(--muted);
    text-transform: uppercase;
}

/* Three.js canvas inside hero */
.hero-model-wrap {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}
#three-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.hero-bottom {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    /* opacity/transform managed by GSAP */
}
.hero-bottom-left { display: flex; flex-direction: column; gap: 0.4rem; }
.hero-bottom-left span:first-child {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--muted);
    text-transform: uppercase;
}
.hero-sub { font-size: 0.9rem; color: var(--muted); max-width: 380px; }

.hero-scroll-hint {
    display: flex; flex-direction: column;
    align-items: center; gap: 0.5rem;
}
.scroll-line {
    width: 1px; height: 60px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
    0%,100%{opacity:1;transform:scaleY(1)}
    50%{opacity:0.4;transform:scaleY(0.8)}
}
.hero-scroll-hint span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 2px;
    color: var(--muted);
    writing-mode: vertical-rl;
}

/* ════════════════════════════════════════════
   SECTION UTILITIES
════════════════════════════════════════════ */
section { position: relative; z-index: 1; }

.pill-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: rgba(200,242,58,0.1);
    color: var(--accent);
    border: 1px solid rgba(200,242,58,0.3);
    border-radius: 100px;
    padding: 0.3rem 0.9rem;
    margin-bottom: 2.5rem;
}

.display-h2 {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 5rem);
    line-height: 1.05;
    margin-bottom: 3rem;
}
.display-h2 em { color: var(--accent); font-style: italic; }

.body-lg { font-size: 1.1rem; line-height: 1.75; color: var(--muted); }
.body-lg strong { color: var(--text); font-weight: 500; }

/* ════════════════════════════════════════════
   WHAT SECTION (two col)
════════════════════════════════════════════ */
.section-what {
    padding: 10rem 3rem;
    border-top: 1px solid var(--border);
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: start;
}

.stat-block {
    border-top: 1px solid var(--border);
    padding: 1.8rem 0;
}
.stat-num {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}
.stat-label { font-size: 0.9rem; color: var(--muted); line-height: 1.5; }

/* ════════════════════════════════════════════
   TICKER
════════════════════════════════════════════ */
.ticker-wrap {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 1.2rem 0;
    overflow: hidden;
    position: relative;
    z-index: 1;
    background: var(--bg2);
}

.ticker {
    display: flex;
    gap: 3rem;
    white-space: nowrap;
    animation: ticker 20s linear infinite;
}
.ticker span {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--muted);
}
.ticker span:nth-child(even) { color: var(--accent); }

@keyframes ticker {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

/* ════════════════════════════════════════════
   FORMULA SECTION
════════════════════════════════════════════ */
.section-formula {
    padding: 10rem 3rem;
    border-top: 1px solid var(--border);
}

.formula-grid {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 1px;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

.fx-card {
    padding: 3rem 2.5rem;
    background: var(--bg2);
    display: flex; flex-direction: column; gap: 1rem;
    transition: background 0.4s;
}
.fx-card:hover { background: #1a1a1a; }

.fx-index {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--muted);
}
.fx-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    color: var(--text);
}
.fx-body { font-size: 0.95rem; color: var(--muted); line-height: 1.7; flex: 1; }
.fx-math {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    color: var(--text);
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}
.hl-x { color: #64b5f6; }
.hl-y { color: var(--accent); }
.hl-z { color: #ff7043; }

/* ════════════════════════════════════════════
   PROOF SECTION
════════════════════════════════════════════ */
.section-proof {
    padding: 10rem 3rem;
    border-top: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 6rem;
    align-items: start;
}

.proof-steps { display: flex; flex-direction: column; gap: 0; }

.step {
    display: flex;
    gap: 2rem;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border);
    /* opacity/transform managed by GSAP */
}

.step-num {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--muted);
    flex-shrink: 0;
    line-height: 1;
    padding-top: 0.3rem;
}

.step-content { display: flex; flex-direction: column; gap: 0.7rem; }

.step-actor {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 0.25rem 0.7rem;
    border-radius: 100px;
    display: inline-block;
    width: fit-content;
}
.step-actor.enemy { background: rgba(255,61,61,0.15); color: var(--accent2); border: 1px solid rgba(255,61,61,0.3); }
.step-actor.you   { background: rgba(200,242,58,0.12); color: var(--accent);  border: 1px solid rgba(200,242,58,0.3); }

.step-content p { font-size: 0.95rem; color: var(--muted); line-height: 1.7; }
.step-content code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: rgba(255,255,255,0.06);
    border-radius: 4px;
    padding: 0.1rem 0.4rem;
    color: var(--text);
}
.step-content strong { color: var(--accent); }

/* ════════════════════════════════════════════
   EXAMPLES STRIP
════════════════════════════════════════════ */
.section-examples {
    padding: 10rem 3rem;
    border-top: 1px solid var(--border);
}

.eg-list { display: flex; flex-direction: column; }

.eg-row {
    display: grid;
    grid-template-columns: 2fr 1fr 3fr;
    align-items: center;
    gap: 2rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border);
    /* opacity/transform managed by GSAP */
    transition: background 0.3s;
}
.eg-row:hover { background: rgba(255,255,255,0.02); padding-left: 1rem; padding-right: 1rem; border-radius: 8px; }

.eg-lang {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--text);
}

.eg-verdict {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-align: center;
    padding: 0.4rem 0.8rem;
    border-radius: 100px;
}
.eg-verdict.fail { background: rgba(255,61,61,0.12); color: var(--accent2); border: 1px solid rgba(255,61,61,0.3); }
.eg-verdict.pass { background: rgba(200,242,58,0.1);  color: var(--accent);  border: 1px solid rgba(200,242,58,0.3); }

.eg-reason { font-size: 0.9rem; color: var(--muted); line-height: 1.6; }

/* ════════════════════════════════════════════
   CTA SECTION
════════════════════════════════════════════ */
.section-cta {
    padding: 14rem 3rem;
    border-top: 1px solid var(--border);
    text-align: center;
    background: radial-gradient(ellipse 70% 60% at 50% 60%, rgba(200,242,58,0.06) 0%, transparent 100%);
}

.cta-overline {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 3px;
    color: var(--muted);
    margin-bottom: 2rem;
}

.cta-heading {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 8rem);
    line-height: 1.0;
    margin-bottom: 3rem;
}
.cta-heading em { color: var(--accent); font-style: italic; }

.cta-btn {
    display: inline-block;
    text-decoration: none;
    background: var(--accent);
    color: #000;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 2px;
    padding: 1.1rem 3rem;
    border-radius: 100px;
    transition: transform 0.3s var(--ease), box-shadow 0.3s;
    margin-bottom: 2rem;
}
.cta-btn:hover {
    transform: scale(1.06) translateY(-2px);
    box-shadow: 0 0 40px rgba(200,242,58,0.3);
}

.cta-note { font-size: 0.85rem; color: var(--muted); }

/* ════════════════════════════════════════════
   FOOTER
════════════════════════════════════════════ */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative; z-index: 1;
}
footer div {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 1px;
    color: var(--muted);
}

/* ════════════════════════════════════════════
   SIMULATOR PAGE
════════════════════════════════════════════ */
.sim-page body { overflow: hidden; }

.sim-nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.2rem 2.5rem;
    background: rgba(10,10,10,0.9);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.sim-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    height: 100vh;
    overflow: hidden;
    padding-top: 62px;
}

.sim-panel {
    background: var(--bg2);
    border-right: 1px solid var(--border);
    padding: 2.5rem 2rem;
    display: flex; flex-direction: column; gap: 1.8rem;
    overflow-y: auto;
}
.sim-panel::-webkit-scrollbar { width: 4px; }
.sim-panel::-webkit-scrollbar-track { background: transparent; }
.sim-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

.sim-panel h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--accent);
}

.ctrl-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.5rem;
    display: block;
}

.ctrl-select, .ctrl-range {
    width: 100%;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    cursor: none;
    outline: none;
    transition: border-color 0.3s;
}
.ctrl-select:hover, .ctrl-select:focus { border-color: var(--accent); }

.ctrl-range { padding: 0; accent-color: var(--accent); }

.ctrl-val {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    color: var(--text);
}

.partition-display {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.2rem;
    display: flex; flex-direction: column; gap: 0.4rem;
}
.partition-display .part-row {
    display: flex; justify-content: space-between; align-items: center;
}
.part-key {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 2px;
    color: var(--muted);
}
.part-val { font-family: var(--font-mono); font-size: 0.85rem; }
.part-val.x { color: #64b5f6; }
.part-val.y { color: var(--accent); }
.part-val.z { color: #ff7043; }

.pump-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 0.7rem; }

.btn-pump {
    border: none;
    border-radius: 8px;
    padding: 0.8rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 1px;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: none;
}
.btn-pump:active { transform: scale(0.95); }
.btn-up { background: var(--accent); color: #000; }
.btn-up:hover { box-shadow: 0 0 20px rgba(200,242,58,0.3); }
.btn-dn { background: rgba(255,255,255,0.07); color: var(--text); border: 1px solid var(--border); }
.btn-dn:hover { border-color: var(--muted); }

.sim-hint { font-size: 0.8rem; color: var(--muted); line-height: 1.6; }

/* Sim visualization area */
.sim-stage {
    position: relative;
    display: flex; flex-direction: column;
    align-items: center; justify-content: flex-start;
    padding: 3rem 2rem 2rem;
    overflow-y: auto;
    overflow-x: hidden;
    background: var(--bg);
}
.sim-stage::-webkit-scrollbar { width: 4px; }
.sim-stage::-webkit-scrollbar-track { background: transparent; }
.sim-stage::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
#sim-bg-canvas {
    position: absolute; inset: 0;
    pointer-events: none; opacity: 0.25;
}
/* CFL stage canvas - same absolute positioning as RL */
#cfl-bg-canvas {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    pointer-events: none; opacity: 0.3;
    z-index: 0;
}

.sim-title-area {
    text-align: center;
    margin-bottom: 2rem;
    position: relative; z-index: 1;
}
.sim-title-area h1 {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--text);
}
.sim-title-area p { font-size: 0.8rem; color: var(--muted); margin-top: 0.3rem; }

/* String Viz */
.string-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    align-content: flex-start;
    max-width: 800px;
    position: relative; z-index: 1;
    min-height: 120px;
    max-height: 48vh;
    overflow-y: auto;
    padding: 1rem;
    margin-bottom: 2rem;
}
.string-wrap::-webkit-scrollbar { width: 4px; }
.string-wrap::-webkit-scrollbar-track { background: transparent; }
.string-wrap::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

.token {
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    border: 1px solid transparent;
    transition: all 0.2s;
}
.token.P { background: rgba(200,242,58,0.1); border-color: rgba(200,242,58,0.4); color: var(--accent); }
.token.D { background: rgba(255,61,61,0.1); border-color: rgba(255,61,61,0.4); color: var(--accent2); }
.token.y-pump {
    box-shadow: 0 0 12px rgba(200,242,58,0.6);
    border-color: var(--accent);
    transform: translateY(-4px);
}

/* Partition Labels */
.partition-labels {
    display: flex; gap: 1rem;
    align-items: center;
    margin: 1.2rem 0;
    position: relative; z-index: 1;
    justify-content: center;
    flex-wrap: wrap;
}
.p-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 1px;
    padding: 0.3rem 0.8rem;
    border-radius: 100px;
    border: 1px solid;
}
.p-label.lx { color: #64b5f6; border-color: rgba(100,181,246,0.4); background: rgba(100,181,246,0.07); }
.p-label.ly { color: var(--accent); border-color: rgba(200,242,58,0.4); background: rgba(200,242,58,0.07); }
.p-label.lz { color: #ff7043; border-color: rgba(255,112,67,0.4); background: rgba(255,112,67,0.07); }

/* Status Board */
.status-board {
    position: relative; z-index: 1;
    margin-top: auto;
    width: 100%; max-width: 700px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
}

.status-indicator {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}
.status-indicator.stable { color: var(--accent); }
.status-indicator.unstable {
    color: var(--accent2);
    animation: flicker 0.3s infinite alternate;
}
@keyframes flicker {
    0%   { opacity: 1; }
    100% { opacity: 0.7; text-shadow: 0 0 10px var(--accent2); }
}

.status-detail { font-size: 0.9rem; color: var(--muted); line-height: 1.5; }

/* n counter badge */
.n-badge {
    position: absolute;
    top: 3rem; right: 3rem;
    font-family: var(--font-serif);
    color: var(--muted);
    font-size: 1rem;
    z-index: 2;
}
.n-badge span {
    font-size: 5rem;
    display: block;
    color: rgba(200,242,58,0.12);
    line-height: 1;
}

/* ════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════ */
@media (max-width: 900px) {
    .two-col, .section-proof,
    .sim-layout { grid-template-columns: 1fr; }
    .formula-grid { grid-template-columns: 1fr; }
    .eg-row { grid-template-columns: 1fr 1fr; }
    .eg-reason { display: none; }
    #navbar { padding: 1.2rem 1.5rem; }
    .nav-links { display: none; }
}