/* ═══════════════════════════════════════════════════════════
   project.css — shared styles for all yogeshsahu.xyz project
   pages. Covers both nav/layout patterns used across agents.
   ═══════════════════════════════════════════════════════════ */

/* ── RESET & ROOT ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:            #030a06;
  --bg-alt:        #050e08;
  --surface:       #081610;
  --surface-hover: #0c2018;
  --border:        #0c2e1c;
  --border-bright: #185535;
  --green:         #00ff88;
  --green-dim:     #00cc6a;
  --green-faint:   #003d1e;
  --cyan:          #00ffd0;
  --amber:         #ffc040;
  --red:           #ff4d5e;
  --text:          #b8f0cc;
  --text-dim:      #4a7a60;
  --text-faint:    #1c3828;
  --font-mono:     'JetBrains Mono', 'Courier New', monospace;
  --font-display:  'Orbitron', sans-serif;
  --radius:        4px;
  --nav-h:         64px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── SCANLINE OVERLAY ─────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.08) 2px,
    rgba(0,0,0,0.08) 4px
  );
  pointer-events: none;
  z-index: 9999;
  animation: scanshift 8s linear infinite;
}
@keyframes scanshift {
  0%   { background-position: 0 0; }
  100% { background-position: 0 100%; }
}

/* ── NOISE TEXTURE ────────────────────────────────── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9998;
  opacity: 0.4;
}

/* ── SCROLLBAR ────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 2px; }

/* ── SELECTION ────────────────────────────────────── */
::selection { background: var(--green); color: var(--bg); }

/* ═══════════════════════════════════════════════════
   NAV — two structural variants, one visual language
   Pattern A: nav > .nav-brand  (pages: cryptoprism-db,
              pratyaksha, cryptoprism-screener)
   Pattern B: nav.nav > .nav-inner > .nav-logo  (pages:
              backtest, forex-pipeline, cryptoprism-socials)
   ═══════════════════════════════════════════════════ */

/* Base nav element — shared by both patterns */
nav,
nav.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(3, 10, 6, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

/* Pattern A inner alignment */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
}

/* Pattern B inner wrapper */
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 2.5rem;
}

/* Pattern A logo */
.nav-brand {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--green);
  letter-spacing: 0.05em;
  text-decoration: none;
}
.nav-brand span { color: var(--text-dim); }

/* Pattern B logo */
.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--green);
  letter-spacing: 0.05em;
  text-decoration: none;
}

/* Nav links — Pattern A: div with anchor children
              Pattern B: ul with li > anchor children  */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}
.nav-links a,
.nav-links li a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  text-decoration: none;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.03em;
}
.nav-links a:hover,
.nav-links li a:hover {
  color: var(--green);
  background: var(--green-faint);
}

/* Mobile open state for Pattern B ul */
.nav-links.nav-open {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(3, 10, 6, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2.5rem;
  gap: 0.25rem;
  z-index: 999;
}
.nav-links.nav-open li { width: 100%; }
.nav-links.nav-open li a {
  display: block;
  padding: 0.6rem 0.75rem;
  font-size: 0.85rem;
}

/* Status dot — Pattern A only */
.nav-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.status-dot {
  width: 7px; height: 7px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(0,255,136,0.4); }
  50%       { opacity: 0.8; transform: scale(1.1); box-shadow: 0 0 0 4px rgba(0,255,136,0); }
}

/* Hamburger — Pattern A: .nav-hamburger
              Pattern B: .hamburger + .ham-open */
.nav-hamburger,
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-hamburger span,
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--green);
  transition: all 0.3s;
}

/* Pattern A open state */
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Pattern B open state */
.hamburger.ham-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.ham-open span:nth-child(2) { opacity: 0; }
.hamburger.ham-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer — Pattern A only */
.nav-mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(3, 10, 6, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2.5rem;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 999;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  text-decoration: none;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius);
  transition: color 0.2s, background 0.2s;
}
.nav-mobile-menu a:hover { color: var(--green); background: var(--green-faint); }

/* ── BTN ──────────────────────────────────────────── */
.btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--green);
  color: var(--bg);
  font-weight: 600;
}
.btn-primary:hover {
  background: var(--cyan);
  box-shadow: 0 0 24px rgba(0,255,136,0.3);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--green);
  border: 1px solid var(--border-bright);
}
.btn-ghost:hover {
  background: var(--green-faint);
  border-color: var(--green);
  transform: translateY(-1px);
}

/* ── REVEAL ANIMATION ─────────────────────────────── */
/* Two classes used: .visible (Pattern A) and .revealed (Pattern B).
   Both driven by IntersectionObserver on .reveal elements.          */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible,
.reveal.revealed {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

@keyframes fadeup {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

/* ═══════════════════════════════════════════════════
   PROJECT HERO — two structural variants

   Pattern A: section.project-hero > .hero-id + h1 + .project-tagline
   Pattern B: section.project-hero > .back-link + .hero-tag +
              h1.project-title + .project-tagline + .hero-stats >
              .hero-stat > span.stat-value + span.stat-label
   ═══════════════════════════════════════════════════ */

.project-hero {
  width: 100%;
  text-align: center;
  padding: 120px 2rem 80px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.project-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0,255,136,0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* Pattern A eyebrow */
.hero-id {
  font-size: 0.72rem;
  color: var(--green);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: fadeup 0.6s 0.2s forwards;
}
.hero-id span { color: var(--text-dim); }

/* Pattern B eyebrow */
.hero-tag {
  font-size: 0.72rem;
  color: var(--green);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* Shared h1 styles — works for both bare h1 and h1.project-title */
.project-hero h1,
h1.project-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 7vw, 5rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  background: linear-gradient(140deg, #ffffff 20%, var(--green) 60%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  animation: fadeup 0.7s 0.4s forwards;
}

.project-tagline {
  font-size: clamp(0.85rem, 2vw, 1.05rem);
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 3rem;
  line-height: 1.8;
  opacity: 0;
  animation: fadeup 0.6s 0.6s forwards;
}

/* ── HERO STATS ───────────────────────────────────── */
/* Pattern A: .hero-stats > .stat-box > .stat-value + .stat-label
   Pattern B: .hero-stats > .hero-stat > span.stat-value + span.stat-label */
.hero-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  opacity: 0;
  animation: fadeup 0.6s 0.8s forwards;
}

/* Pattern A stat box */
.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.5rem;
  min-width: 140px;
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
}
.stat-box:hover {
  border-color: var(--border-bright);
  background: var(--surface-hover);
}

/* Pattern B stat box */
.hero-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.5rem;
  min-width: 130px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  transition: border-color 0.2s, background 0.2s;
}
.hero-stat:hover {
  border-color: var(--border-bright);
  background: var(--surface-hover);
}

/* Shared stat value & label — work in both .stat-box and .hero-stat */
.stat-value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--green);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.4rem;
  display: block;
}
.stat-label {
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: block;
}
/* When used as direct child spans inside .hero-stat, override margin */
.hero-stat .stat-value { margin-bottom: 0; }

/* ═══════════════════════════════════════════════════
   PROJECT LAYOUT — two structural variants

   Pattern A: .project-layout > aside.sidebar + main.main-content
   Pattern B: .project-layout > aside.project-sidebar + main.project-main
   ═══════════════════════════════════════════════════ */

.project-layout {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  padding: 5rem 2.5rem;
  align-items: start;
}

/* ── SIDEBAR ─────────────────────────────────────── */
.sidebar,
.project-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sidebar-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem;
  transition: border-color 0.2s;
}
.sidebar-card:hover { border-color: var(--border-bright); }

/* Pattern A sidebar title */
.sidebar-title {
  font-size: 0.68rem;
  color: var(--green);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

/* Pattern B sidebar title */
.sidebar-card-title {
  font-size: 0.68rem;
  color: var(--green);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

/* ── STACK LIST ─────────────────────────────────── */
/* Pattern A: .stack-item divs with .stack-dot
   Pattern B: ul.stack-list > li                    */
.stack-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.stack-item:last-child { border-bottom: none; }
.stack-item:hover { color: var(--text); }

.stack-dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  flex-shrink: 0;
}

.stack-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.stack-list li {
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
  padding-left: 0.75rem;
  position: relative;
  transition: color 0.2s;
}
.stack-list li:last-child { border-bottom: none; }
.stack-list li:hover { color: var(--text); }
.stack-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
}

/* ── SIDEBAR LINKS ──────────────────────────────── */
.sidebar-links { display: flex; flex-direction: column; gap: 0.5rem; }
.sidebar-link {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius);
  transition: color 0.2s, background 0.2s;
}
.sidebar-link:hover { color: var(--green); background: var(--green-faint); }

/* Icon span inside sidebar links (Pattern B) */
.link-icon {
  font-size: 0.9rem;
  color: var(--green);
  line-height: 1;
}

/* ── VERSION BADGE ────────────────────────────── */
.version-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--green);
  background: var(--green-faint);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius);
  padding: 0.3rem 0.75rem;
  letter-spacing: 0.08em;
  font-weight: 500;
}

/* ── TIMELINE (sidebar) ─────────────────────────── */
/* Pattern A: ul.tl-list > li.tl-item > .tl-dot + div
   Pattern B: .timeline > .timeline-item > span.tl-dot + span.tl-text */

/* Pattern A */
.tl-list { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.tl-item { display: flex; gap: 0.75rem; font-size: 0.75rem; color: var(--text-dim); }
.tl-version { color: var(--green); margin-right: 0.3rem; }

/* Pattern B */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  list-style: none;
}
.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--text-dim);
}
.tl-text {
  line-height: 1.5;
  flex: 1;
}

/* Shared .tl-dot — default green, colour modifiers */
.tl-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  margin-top: 0.35rem;
  flex-shrink: 0;
}
.tl-dot--cyan  { background: var(--cyan); }
.tl-dot--amber { background: var(--amber); }
.tl-dot--red   { background: var(--red); }

/* ── MAIN CONTENT ───────────────────────────────── */
/* Pattern A: main.main-content
   Pattern B: main.project-main                        */
.main-content,
.project-main {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

/* ── BACK LINK ──────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.2s;
}
.back-link:hover { color: var(--green); }

/* ── DOC SECTION ────────────────────────────────── */
.doc-section { /* container only */ }

/* Section title — used as h2 in Pattern B and div in Pattern A.
   Pattern B uses literal "> " prefix in text content; Pattern A
   uses ::before pseudo-element. Both share visual style.          */
.section-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--green);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: 0.05em;
  font-weight: 700;
}

/* Pattern A adds ">" via pseudo-element; Pattern B embeds it as text.
   Only attach ::before when it's a div (not h2) — or just let both
   have it, since h2 text already starts with "> " so the double
   prefix needs to be avoided. We use the :not(h2) selector.        */
.section-title:not(h2)::before {
  content: ">";
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 1rem;
  flex-shrink: 0;
}

/* ── DOC PARAGRAPH ──────────────────────────────── */
.doc-p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.9;
  margin-bottom: 1rem;
}
.doc-p:last-child { margin-bottom: 0; }

/* ── CALLOUT ────────────────────────────────────── */
.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 4px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  font-size: 0.82rem;
  color: var(--text);
  line-height: 1.8;
}
.callout.amber { border-left-color: var(--amber); }
.callout.cyan  { border-left-color: var(--cyan); }
.callout.red   { border-left-color: var(--red); }

/* ── ARCH BLOCK ─────────────────────────────────── */
.arch-block {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  line-height: 2;
  overflow-x: auto;
  white-space: pre;
}

/* ── CHALLENGE ITEMS ────────────────────────────── */
/* Pattern A: .challenge-item > .challenge-label + .challenge-title + .doc-p
   Pattern B: .challenge-item > span.ci-label + span.ci-desc
              also used inside ul.approach-list as li.challenge-item  */

.challenge-item {
  margin-bottom: 2rem;
  display: block;
}
.challenge-item:last-child { margin-bottom: 0; }

/* Pattern A labels */
.challenge-label {
  display: block;
  font-size: 0.72rem;
  color: var(--amber);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.challenge-title {
  display: block;
  font-size: 0.92rem;
  color: var(--text);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

/* Pattern B labels */
.ci-label {
  display: block;
  font-size: 0.72rem;
  color: var(--amber);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  font-weight: 600;
}
.ci-desc {
  display: block;
  font-size: 0.83rem;
  color: var(--text-dim);
  line-height: 1.85;
}

/* Approach list (Pattern B) */
.approach-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin-top: 1rem;
}
.approach-list li.challenge-item {
  padding-left: 1rem;
  border-left: 2px solid var(--border-bright);
  margin-bottom: 0;
}
.approach-list li.challenge-item:hover {
  border-left-color: var(--green);
}

/* ── RESULT GRID ────────────────────────────────── */
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

/* Pattern A: .result-card > .result-value + .result-label
   Pattern B: .result-card > span.result-value + span.result-metric + span.result-note */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 6px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  transition: border-color 0.2s, background 0.2s;
}
.result-card:hover {
  border-color: var(--border-bright);
  border-left-color: var(--green);
  background: var(--surface-hover);
}

.result-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--green);
  font-weight: 700;
  line-height: 1;
  display: block;
}

/* Pattern A: .result-label */
.result-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.3rem;
  display: block;
}

/* Pattern B: span.result-metric (primary label) */
.result-metric {
  font-size: 0.78rem;
  color: var(--text);
  font-weight: 500;
  display: block;
  margin-top: 0.2rem;
}

/* Pattern B: span.result-note (secondary description) */
.result-note {
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.5;
  display: block;
}

/* ── TIMELINE (main content) ────────────────────── */
/* Used in Pattern A main content as ul.timeline > li > .timeline-dot + div */
ul.timeline {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
ul.timeline li {
  display: flex;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--text-dim);
}
.timeline-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  margin-top: 0.4rem;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════
   FOOTER — two structural variants

   Pattern A: footer > .footer-brand + .footer-copy
              (max-width centered with border-top)
   Pattern B: footer.footer > span.footer-left + span.footer-right
   ═══════════════════════════════════════════════════ */

footer {
  border-top: 1px solid var(--border);
  padding: 3rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
footer.footer {
  max-width: 1100px;
  margin: 0 auto;
}

/* Pattern A */
.footer-brand {
  font-size: 0.8rem;
  color: var(--text-dim);
}
.footer-brand a {
  color: var(--green);
  text-decoration: none;
}
.footer-copy {
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* Pattern B */
.footer-left {
  font-size: 0.8rem;
  color: var(--green);
  font-family: var(--font-mono);
}
.footer-right {
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* ═══════════════════════════════════════════════════
   MOBILE RESPONSIVE
   ═══════════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* Nav */
  nav { padding: 0 1.25rem; }
  .nav-inner { padding: 0 1.25rem; }
  .nav-status { display: none; }
  .nav-hamburger,
  .hamburger { display: flex; }

  /* Hide desktop nav links by default on mobile;
     Pattern A uses .nav-mobile-menu, Pattern B toggles .nav-open on ul */
  nav > .nav-links { display: none; }
  .nav-inner > .nav-links { display: none; }
  .nav-links.nav-open { display: flex; }

  /* Hero */
  .project-hero { padding: 100px 1.5rem 60px; }
  .hero-stats { gap: 0.75rem; }
  .stat-box,
  .hero-stat { min-width: 110px; padding: 0.75rem 1rem; }

  /* Layout: stack sidebar above main */
  .project-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 3rem 1.5rem;
  }

  .sidebar,
  .project-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }

  .sidebar-card { min-width: 220px; flex: 1; }

  .main-content,
  .project-main { gap: 3rem; }

  footer { padding: 2rem 1.5rem; }
  footer.footer { padding: 2rem 1.5rem; }

  .result-grid { grid-template-columns: 1fr 1fr; }
  .arch-block { font-size: 0.68rem; padding: 1rem; }
}

@media (max-width: 480px) {
  .project-hero h1,
  h1.project-title { font-size: 2rem; }
  .result-grid { grid-template-columns: 1fr; }
  .stat-value { font-size: 1rem; }
  .result-value { font-size: 1.4rem; }
}