/* =========================================================
   Hamza Fayz Portfolio — v2 Design System (Phase 1)
   Premium dark interactive theme. Scope: index-en.html only.
   Other pages continue to use /styles.css until later phases.
   ========================================================= */

:root {
  /* Palette — deep operational command-center */
  --bg-0: #05070d;            /* page void */
  --bg-1: #0a0f1a;            /* base surface */
  --bg-2: #0f1524;            /* elevated surface */
  --bg-3: #141c2e;            /* card surface */
  --line: rgba(148, 180, 220, 0.10);
  --line-strong: rgba(148, 180, 220, 0.18);

  --ink: #eef3fa;
  --ink-soft: #c7d2e2;
  --muted: #7f8ea8;
  --muted-deep: #556378;

  --accent: #4dd4ce;           /* primary — cyan teal */
  --accent-glow: #4dd4cecc;
  --accent-2: #ffb86b;         /* secondary — warm amber */
  --accent-3: #9aa8ff;         /* support — indigo */
  --danger: #ff6b6b;
  --ok: #6bd69a;

  /* Type */
  --font-display: "Sora", "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-body: "Inter", "Sora", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Scale */
  --fs-hero: clamp(2.4rem, 5.6vw, 4.6rem);
  --fs-h2:   clamp(1.7rem, 3.2vw, 2.6rem);
  --fs-h3:   clamp(1.15rem, 1.6vw, 1.4rem);
  --fs-body: 1rem;
  --fs-sm:   0.86rem;
  --fs-xs:   0.76rem;

  /* Space */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 28px;

  --shadow-1: 0 2px 8px rgba(0,0,0,0.30);
  --shadow-2: 0 14px 40px rgba(0,0,0,0.45);
  --shadow-accent: 0 10px 36px rgba(77, 212, 206, 0.28);

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Reset / base ===== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-0);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: transparent;
}

/* Ambient background: layered depth */
body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
body::before {
  background:
    radial-gradient(900px 520px at 82% -10%, rgba(77, 212, 206, 0.18), transparent 60%),
    radial-gradient(900px 620px at -5% 20%, rgba(154, 168, 255, 0.12), transparent 60%),
    radial-gradient(700px 540px at 50% 120%, rgba(255, 184, 107, 0.10), transparent 60%);
}
body::after {
  background-image:
    linear-gradient(rgba(148, 180, 220, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 180, 220, 0.035) 1px, transparent 1px);
  background-size: 48px 48px, 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
  opacity: 0.6;
}

main, header, footer { position: relative; z-index: 1; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.025em; margin: 0; }
h1 { font-size: var(--fs-hero); line-height: 1.02; font-weight: 800; }
h2 { font-size: var(--fs-h2); line-height: 1.12; }
h3 { font-size: var(--fs-h3); line-height: 1.3; }
p  { margin: 0; color: var(--ink-soft); }
a  { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

::selection { background: var(--accent); color: #021014; }

/* ===== Utility ===== */
.container { width: min(1240px, 92vw); margin: 0 auto; }
.muted { color: var(--muted); }
.kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font-display);
}
.kicker::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--accent);
  display: inline-block;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 12px 20px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease), background 220ms var(--ease), border-color 220ms var(--ease), color 220ms var(--ease);
  white-space: nowrap;
}
.btn svg { width: 14px; height: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #2bb5ae);
  color: #021014;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 42px rgba(77, 212, 206, 0.42); }
.btn-ghost {
  color: var(--ink);
  background: rgba(148, 180, 220, 0.06);
  border-color: var(--line-strong);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(148, 180, 220, 0.12); border-color: rgba(148, 180, 220, 0.32); transform: translateY(-1px); }
.btn-link {
  color: var(--accent);
  padding: 6px 0;
  font-weight: 600;
}
.btn-link:hover { color: var(--ink); }

/* ===== Top bar ===== */
.topbar {
  position: sticky; top: 0; z-index: 90;
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  background: rgba(10, 15, 26, 0.72);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: var(--s-5);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 800;
  font-size: 1.02rem; letter-spacing: -0.02em; color: var(--ink);
}
.brand-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.nav-main { display: flex; align-items: center; gap: 2px; }
.nav-main a {
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 180ms var(--ease), background 180ms var(--ease);
}
.nav-main a:hover { color: var(--ink); background: rgba(148,180,220,0.06); }
.nav-actions { display: flex; align-items: center; gap: var(--s-3); }
.lang-pill {
  display: inline-flex; align-items: center; gap: 2px;
  border: 1px solid var(--line-strong); border-radius: 999px;
  padding: 3px; background: rgba(148,180,220,0.04);
}
.lang-pill a {
  padding: 5px 10px; font-size: 0.74rem; font-weight: 700;
  letter-spacing: 0.08em; color: var(--muted); border-radius: 999px;
}
.lang-pill a.active { background: var(--ink); color: #021014; }
.mobile-toggle { display: none; background: none; border: 0; color: var(--ink); padding: 8px; cursor: pointer; }

/* ===== Hero ===== */
.hero {
  padding: var(--s-9) 0 var(--s-8);
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: var(--s-8);
  align-items: center;
}
.hero-status {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 6px 14px; margin-bottom: var(--s-5);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(77, 212, 206, 0.06);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ok); box-shadow: 0 0 10px var(--ok);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.55; transform: scale(0.92); } }

.hero h1 .line-2 { display: block; }
.hero h1 .accent {
  background: linear-gradient(135deg, var(--accent) 0%, #a8fff9 55%, var(--accent-2) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-sub {
  margin-top: var(--s-5);
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 62ch;
}
.hero-tags {
  margin-top: var(--s-5);
  display: flex; flex-wrap: wrap; gap: var(--s-2);
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  padding: 5px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: rgba(148,180,220,0.04);
}
.hero-cta {
  margin-top: var(--s-6);
  display: flex; flex-wrap: wrap; gap: var(--s-3);
}

/* Profile card in hero */
.hero-card {
  position: relative;
  border-radius: var(--r-lg);
  padding: var(--s-5);
  background: linear-gradient(160deg, rgba(77,212,206,0.08), rgba(154,168,255,0.04) 60%, transparent);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}
.hero-card::before {
  content: "";
  position: absolute; inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(77,212,206,0.5), transparent 40%, rgba(255,184,107,0.35));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.hero-portrait {
  width: 100%; aspect-ratio: 1 / 1;
  border-radius: var(--r-md);
  overflow: hidden;
  position: relative;
  background: #0b1322;
  border: 1px solid var(--line-strong);
}
.hero-portrait img {
  width: 100%; height: 100%; object-fit: cover;
  filter: contrast(1.04) saturate(1.05) brightness(0.95);
  transition: transform 900ms var(--ease-out);
}
.hero-card:hover .hero-portrait img { transform: scale(1.04); }
.hero-portrait::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(5,7,13,0.85) 100%);
}
.hero-meta {
  margin-top: var(--s-4);
  display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s-3);
}
.hero-meta-item {
  font-size: var(--fs-xs);
  color: var(--muted);
}
.hero-meta-item strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.94rem;
  font-weight: 700;
  margin-top: 2px;
}

/* ===== Section base ===== */
.section { padding: var(--s-9) 0; position: relative; }
.section-head { margin-bottom: var(--s-7); max-width: 72ch; }
.section-head h2 { margin-top: var(--s-3); }
.section-head p { margin-top: var(--s-4); color: var(--muted); font-size: 1.05rem; }

/* ===== Why I'm different — lens model ===== */
.lens {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--s-8);
  align-items: center;
}
.lens-copy p { color: var(--ink-soft); }
.lens-copy p + p { margin-top: var(--s-4); }
.lens-not {
  margin-top: var(--s-5);
  display: grid; gap: var(--s-2);
}
.lens-not-item {
  display: flex; align-items: center; gap: var(--s-3);
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(148,180,220,0.03);
  font-size: 0.94rem;
}
.lens-not-item .x {
  color: var(--danger);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
}
.lens-not-item .label { color: var(--muted); text-decoration: line-through; text-decoration-color: rgba(255,107,107,0.45); }

.lens-diagram {
  position: relative;
  aspect-ratio: 1 / 0.92;
  width: 100%;
  max-width: 540px;
  margin-inline: auto;
}
.lens-ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  opacity: 0.55;
  mix-blend-mode: screen;
  transition: transform 420ms var(--ease), opacity 420ms var(--ease);
}
.lens-ring .label {
  position: absolute; top: 8%; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--ink);
  white-space: nowrap;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(10,15,26,0.78);
  border: 1px solid var(--line-strong);
}
.lens-r1 { width: 58%; height: 58%; top: 6%; left: 4%;  background: radial-gradient(circle, rgba(77,212,206,0.38), transparent 70%); }
.lens-r2 { width: 58%; height: 58%; top: 6%; left: 38%; background: radial-gradient(circle, rgba(154,168,255,0.38), transparent 70%); }
.lens-r3 { width: 58%; height: 58%; top: 40%; left: 21%; background: radial-gradient(circle, rgba(255,184,107,0.38), transparent 70%); }
.lens-diagram:hover .lens-r1 { transform: translate(-6px,-6px) scale(1.02); }
.lens-diagram:hover .lens-r2 { transform: translate(6px,-6px)  scale(1.02); }
.lens-diagram:hover .lens-r3 { transform: translate(0,6px)     scale(1.02); }
.lens-core {
  position: absolute; top: 45%; left: 50%;
  transform: translate(-50%, -50%);
  padding: var(--s-4) var(--s-5);
  background: rgba(5, 7, 13, 0.86);
  border: 1px solid var(--accent);
  border-radius: var(--r-md);
  text-align: center;
  box-shadow: 0 0 28px rgba(77,212,206,0.25);
  min-width: 180px;
}
.lens-core strong {
  display: block;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.lens-core span { font-size: 0.96rem; font-weight: 600; color: var(--ink); }

/* ===== Interactive System Map ===== */
.sysmap {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--s-7);
  align-items: stretch;
}
.sysmap-canvas {
  position: relative;
  background: linear-gradient(165deg, rgba(15,21,36,0.85), rgba(10,15,26,0.4));
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  padding: var(--s-5);
  aspect-ratio: 1 / 0.9;
  min-height: 480px;
  overflow: hidden;
}
.sysmap-canvas svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.sysmap-canvas .edge {
  stroke: rgba(148,180,220,0.18);
  stroke-width: 1.2;
  fill: none;
  transition: stroke 260ms var(--ease), stroke-width 260ms var(--ease);
}
.sysmap-canvas .edge.active {
  stroke: var(--accent);
  stroke-width: 2;
  filter: drop-shadow(0 0 6px rgba(77,212,206,0.6));
}
.sysmap-node {
  position: absolute;
  transform: translate(-50%, -50%);
  padding: 10px 14px;
  background: rgba(20, 28, 46, 0.94);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
  transition: all 260ms var(--ease);
  z-index: 2;
}
.sysmap-node::before {
  content: ""; display: inline-block; margin-right: 8px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--muted); vertical-align: middle;
  transition: background 260ms var(--ease), box-shadow 260ms var(--ease);
}
.sysmap-node:hover,
.sysmap-node.active {
  background: rgba(77, 212, 206, 0.14);
  color: var(--ink);
  border-color: var(--accent);
  transform: translate(-50%, -50%) scale(1.04);
  box-shadow: 0 0 18px rgba(77,212,206,0.35);
}
.sysmap-node:hover::before,
.sysmap-node.active::before {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}
.sysmap-node.core {
  padding: 14px 22px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  background: rgba(5, 7, 13, 0.92);
  border-color: var(--accent);
  box-shadow: 0 0 32px rgba(77,212,206,0.28);
}
.sysmap-node.core::before { background: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }

.sysmap-panel {
  background: linear-gradient(170deg, rgba(15,21,36,0.85), rgba(10,15,26,0.5));
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  padding: var(--s-6);
  display: flex; flex-direction: column;
  gap: var(--s-4);
  min-height: 480px;
}
.sysmap-panel .label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}
.sysmap-panel h3 {
  font-size: 1.35rem;
  color: var(--ink);
}
.sysmap-panel ul {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 10px;
}
.sysmap-panel li {
  display: flex; gap: var(--s-3);
  font-size: 0.94rem;
  color: var(--ink-soft);
  padding-left: 0;
}
.sysmap-panel li::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  flex: 0 0 6px;
  margin-top: 9px;
}
.sysmap-panel .hint {
  margin-top: auto;
  padding: var(--s-3) var(--s-4);
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-md);
  font-size: 0.82rem;
  color: var(--muted);
}

/* ===== Signature Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
}
.project {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  padding: var(--s-6);
  background: linear-gradient(170deg, rgba(15,21,36,0.85), rgba(10,15,26,0.6));
  overflow: hidden;
  transition: transform 280ms var(--ease), border-color 280ms var(--ease);
  display: flex; flex-direction: column;
  gap: var(--s-4);
  min-height: 340px;
}
.project::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(420px 240px at var(--mx, 50%) var(--my, 0%), rgba(77,212,206,0.12), transparent 60%);
  opacity: 0;
  transition: opacity 280ms var(--ease);
  pointer-events: none;
}
.project:hover { transform: translateY(-4px); border-color: rgba(77,212,206,0.42); }
.project:hover::before { opacity: 1; }
.project .proj-head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--s-3); }
.project .proj-idx {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--muted);
  letter-spacing: 0.18em;
}
.project .proj-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(148,180,220,0.06);
  border: 1px solid var(--line-strong);
  color: var(--muted);
  letter-spacing: 0.04em;
}
.project .proj-badge.live { color: var(--ok); border-color: rgba(107,214,154,0.35); background: rgba(107,214,154,0.08); }
.project .proj-badge.build { color: var(--accent-2); border-color: rgba(255,184,107,0.4); background: rgba(255,184,107,0.08); }
.project h3 { color: var(--ink); }
.project .proj-summary { color: var(--ink-soft); font-size: 0.95rem; }
.project .proj-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.project .proj-tags span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
}
.project .proj-cta { display: flex; gap: var(--s-3); align-items: center; margin-top: var(--s-2); }
.project details summary {
  cursor: pointer;
  list-style: none;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 600;
  user-select: none;
}
.project details summary::-webkit-details-marker { display: none; }
.project details summary::after { content: " ↓"; transition: transform 200ms var(--ease); display: inline-block; }
.project details[open] summary::after { content: " ↑"; }
.project details[open] .proj-detail { margin-top: var(--s-3); }
.proj-detail {
  display: grid;
  gap: var(--s-3);
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.proj-detail dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.proj-detail dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.55;
}

/* ===== Flow animation — PR → PO → Receipt → Invoice → Cost Visibility ===== */
.flow-wrap {
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  padding: var(--s-6);
  background: linear-gradient(170deg, rgba(15,21,36,0.85), rgba(10,15,26,0.5));
}
.flow {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  align-items: center;
  gap: 6px;
  margin-top: var(--s-5);
}
.flow-stage {
  grid-column: span 1;
  padding: var(--s-4) var(--s-3);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: rgba(148,180,220,0.04);
  text-align: center;
  transition: all 360ms var(--ease);
  cursor: pointer;
  position: relative;
}
.flow-stage .num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.18em;
  margin-bottom: 8px;
}
.flow-stage .name {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.2;
}
.flow-stage.active {
  border-color: var(--accent);
  background: rgba(77,212,206,0.10);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(77,212,206,0.22);
}
.flow-stage.active .name { color: var(--ink); }
.flow-stage.active .num { color: var(--accent); }
.flow-arrow {
  grid-column: span 1;
  height: 2px;
  background: linear-gradient(90deg, var(--line-strong) 0%, var(--line-strong) 100%);
  position: relative;
  border-radius: 2px;
}
.flow-arrow::after {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  box-shadow: 0 0 8px var(--accent-glow);
  transition: left 900ms var(--ease), opacity 200ms var(--ease);
}
.flow-arrow.lit { background: linear-gradient(90deg, var(--accent), var(--line-strong)); }
.flow-arrow.lit::after { left: calc(100% - 8px); opacity: 1; }

.flow-caption {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-4);
  align-items: center;
  margin-top: var(--s-6);
  padding: var(--s-4);
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-md);
  background: rgba(5,7,13,0.5);
}
.flow-caption .flow-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.18em;
  padding: 4px 10px;
  border: 1px solid rgba(77,212,206,0.35);
  border-radius: 999px;
  text-transform: uppercase;
}
.flow-caption .flow-text { color: var(--ink-soft); font-size: 0.95rem; }
.flow-caption .flow-text strong { color: var(--ink); font-weight: 600; }

/* ===== Logic / rule cards ===== */
.logic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
  margin-top: var(--s-6);
}
.rule-card {
  padding: var(--s-5);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: rgba(15,21,36,0.7);
  display: grid;
  gap: var(--s-2);
  transition: border-color 220ms var(--ease);
}
.rule-card:hover { border-color: rgba(77,212,206,0.4); }
.rule-card .rule-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.rule-card h4 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0;
}
.rule-card p { color: var(--muted); font-size: 0.9rem; }
.rule-card .formula {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 8px 10px;
  background: rgba(5,7,13,0.6);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-soft);
  overflow-x: auto;
}

/* ===== Current Focus — command center ===== */
.focus-panel {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  padding: var(--s-7);
  background:
    linear-gradient(170deg, rgba(15,21,36,0.9), rgba(10,15,26,0.6)),
    radial-gradient(600px 260px at 80% 0%, rgba(77,212,206,0.14), transparent 60%);
  overflow: hidden;
}
.focus-panel::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(77,212,206,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,212,206,0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, #000, transparent 70%);
  pointer-events: none;
}
.focus-header {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: var(--s-4);
  margin-bottom: var(--s-6);
  position: relative;
}
.focus-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.focus-tag .blink {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.6s ease-in-out infinite;
}
.focus-panel h2 { position: relative; }
.focus-body {
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: var(--s-7);
  align-items: start;
}
.focus-statement {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--ink);
  line-height: 1.6;
  max-width: 62ch;
}
.focus-statement em {
  font-style: normal;
  color: var(--accent);
}
.focus-meta {
  display: grid; gap: var(--s-3);
}
.focus-row {
  display: flex; justify-content: space-between;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(5,7,13,0.5);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.focus-row .k { color: var(--muted); letter-spacing: 0.08em; }
.focus-row .v { color: var(--ink); }

/* ===== Closing / contact ===== */
.closing {
  padding: var(--s-9) 0;
  text-align: center;
}
.closing h2 {
  max-width: 22ch;
  margin: 0 auto var(--s-5);
}
.closing p { max-width: 56ch; margin: 0 auto var(--s-6); color: var(--muted); }
.closing-cta {
  display: inline-flex; flex-wrap: wrap; gap: var(--s-3); justify-content: center;
}
.closing-meta {
  margin-top: var(--s-8);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
  max-width: 780px;
  margin-inline: auto;
}
.closing-meta-item {
  padding: var(--s-4);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(15,21,36,0.5);
  text-align: start;
}
.closing-meta-item .k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.closing-meta-item .v {
  display: block;
  margin-top: 4px;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.96rem;
}
.closing-meta-item .v a:hover { color: var(--accent); }

/* ===== Footer ===== */
.footer {
  padding: var(--s-6) 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--fs-xs);
  display: flex; justify-content: space-between; align-items: center; gap: var(--s-4);
  flex-wrap: wrap;
}
.footer a { color: var(--ink-soft); }
.footer a:hover { color: var(--accent); }

/* ===== Reveal on scroll ===== */
.reveal-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}
.reveal-up.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--s-6); }
  .hero-card { max-width: 420px; }
  .lens { grid-template-columns: 1fr; }
  .sysmap { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .focus-body { grid-template-columns: 1fr; }
  .logic-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .nav-main { display: none; }
  .mobile-toggle { display: inline-flex; }
  .nav-main.open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 100%; left: 0; right: 0;
    padding: var(--s-3);
    background: rgba(10,15,26,0.98);
    border-bottom: 1px solid var(--line-strong);
    gap: 2px;
  }
  .topbar-inner { padding: 12px 0; }
  .section { padding: var(--s-7) 0; }
  .hero { padding: var(--s-7) 0 var(--s-5); }
  .projects-grid { grid-template-columns: 1fr; }
  .logic-grid { grid-template-columns: 1fr; }
  .closing-meta { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(5, 1fr); }
  .flow-arrow { display: none; }
  .flow-stage { grid-column: span 1; }
  .sysmap-canvas { aspect-ratio: auto; min-height: 520px; }
  .footer { justify-content: center; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal-up { opacity: 1; transform: none; }
}