/* ============================================================
   Tokens
   ============================================================ */
:root {
  --bg:           #0A0A0A;
  --bg-soft:      #14141C;
  --surface:      #1A1A24;
  --surface-2:    #20202E;
  --border:       rgba(255,255,255,0.07);
  --border-strong:rgba(255,255,255,0.16);
  --border-violet:rgba(144,133,224,0.32);

  --fg:           #E8E8F0;
  --fg-2:         #C0C0D4;
  --fg-3:         #8A8AA0;
  --fg-4:         #5A5A72;

  --violet-100:   #E8E5FA;
  --violet-300:   #B0A8EC;
  --violet-400:   #9085E0;
  --violet-500:   #7060CC;
  --violet-600:   #5640B0;

  --accent:       var(--violet-400);
  --accent-strong:var(--violet-500);

  --font-serif:   "Playfair Display", Georgia, serif;
  --font-sans:    "Inter", system-ui, -apple-system, sans-serif;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", "SF Mono", Menlo, monospace;

  --content-w:    1660px;
  --gutter:       clamp(20px, 4vw, 56px);
}

/* ============================================================
   Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
::selection { background: var(--violet-500); color: #fff; }

/* Cinematic grain */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.09;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='256' height='256'><filter id='grain'><feTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23grain)'/></svg>");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ============================================================
   Typography primitives
   ============================================================ */
.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  font-weight: 500;
}
.mono-sm { font-family: var(--font-mono); font-size: 12px; color: var(--fg-2); }
.accent { color: var(--accent); }
.strong { color: var(--fg); }

/* ============================================================
   Top bar — lang toggle only, pinned top-right
   ============================================================ */
.topbar {
  position: fixed;
  top: 0; right: 0;
  z-index: 50;
  padding: 22px var(--gutter);
  pointer-events: none;
}
.topbar > * { pointer-events: auto; }
.lang-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.lang-btn {
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--fg-2);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: border-color 120ms ease, color 120ms ease, background 120ms ease;
}
.lang-btn:hover { color: var(--fg); border-color: var(--fg-3); }
.lang-btn.active {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #fff;
}

/* ============================================================
   Footer
   ============================================================ */
footer {
  border-top: 1px solid var(--border);
  padding: 32px var(--gutter);
  max-width: var(--content-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
footer .left, footer .right {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.footer-social {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-social a {
  color: var(--fg-3);
  transition: color 140ms ease;
  display: flex;
  align-items: center;
}
.footer-social a:hover { color: var(--accent); }
.footer-legal {
  display: flex;
  gap: 20px;
  align-items: center;
}
.footer-legal a {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-4);
  transition: color 140ms ease;
}
.footer-legal a:hover { color: var(--fg-2); }

/* ============================================================
   Project pages — shared layout
   ============================================================ */
.project-container {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 120px var(--gutter) 80px;
}

.back-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 48px;
  transition: color 140ms ease;
}
.back-link:hover { color: var(--accent); }

.project-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.project-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(48px, 7vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 16px 0;
  color: var(--fg);
}

.project-tagline {
  font-family: var(--font-sans);
  font-size: clamp(18px, 2vw, 22px);
  color: var(--fg-2);
  margin: 0 0 8px 0;
  line-height: 1.4;
}

.project-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 56px;
}

.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 56px 0;
}

.section-heading {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px 0;
}

.body-text {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--fg);
  margin: 0 0 28px 0;
  text-wrap: pretty;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.tech-tag {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--fg);
  border: 1px solid var(--border-strong);
  background: rgba(255,255,255,0.02);
  padding: 8px 14px;
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: 20px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.project-link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
  border: 1px solid var(--border-strong);
  padding: 14px 28px;
  transition: all 140ms ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.project-link:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #fff;
}

.project-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.nav-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: color 140ms ease;
}
.nav-link:hover { color: var(--accent); }

/* ============================================================
   Responsive — project pages
   ============================================================ */
@media (max-width: 768px) {
  .project-container { padding: 80px 20px 60px; }
  .project-title { font-size: clamp(36px, 10vw, 56px); }
  .project-links { flex-direction: column; }
  .project-nav { flex-direction: column; gap: 20px; }
}