/* ===========================================================================
   Thu LeNoll — Portfolio Design System
   Shared tokens + base styles for the homepage and every case study.
   =========================================================================== */

:root {
  /* ---- 4pt spacing scale ---- */
  --s-1:  4px;
  --s-2:  8px;
  --s-3:  12px;
  --s-4:  16px;
  --s-5:  20px;
  --s-6:  24px;
  --s-7:  28px;
  --s-8:  32px;
  --s-9:  36px;
  --s-10: 40px;
  --s-11: 44px;
  --s-12: 48px;
  --s-14: 56px;
  --s-16: 64px;
  --s-18: 72px;
  --s-20: 80px;
  --s-22: 88px;
  --s-24: 96px;
  --s-28: 112px;
  --s-32: 128px;

  /* ---- Color ---- */
  --bg:           #FAEFE3;
  --bg-deep:      #F8D2C5;
  --bg-tint:      #FDF7EE;
  --ink:          #221A15;
  --ink-soft:     #574A41;
  --ink-faint:    #6F635A;
  --line:         #E8D5BE;
  --line-soft:    rgba(34, 26, 21, 0.08);
  --line-mid:     rgba(34, 26, 21, 0.12);

  --accent:       #5468A5;
  --accent-deep:  #3D4F85;
  --accent-light: #B0BEE3;
  --accent-soft:  rgba(84, 104, 165, 0.10);

  --terra:        #5C3F28;
  --terra-deep:   #3D2A1A;
  --terra-soft:   rgba(92, 63, 40, 0.08);
  --terra-tint:   #EDDFD1;

  --tint-cool:    #E5E8F0;
  --tint-warm:    #F2DECF;
  --tint-terra:   #E9DAC8;

  /* ---- Type ---- */
  --font-serif: 'Literata', Georgia, serif;
  --font-sans:  'Manrope', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', ui-monospace, monospace;

  /* ---- Layout ---- */
  --topbar-h: 72px;

  /* ---- Motion ---- */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: "ss01" on;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--s-8);
}
.container--narrow {
  max-width: 1040px;
}

/* =================== TOP BAR =================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--s-5) 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-6);
}
.wordmark {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  text-decoration: none;
  color: inherit;
}
.wordmark-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: 14px;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 60;
  padding-top: 1px;
}
.wordmark-name {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.012em;
  line-height: 1;
  font-variation-settings: "opsz" 60;
}
.topbar-meta {
  display: flex;
  gap: var(--s-8);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}
.topbar-meta a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.topbar-meta a:hover { color: var(--accent); }
.topbar-meta .status::before {
  content: "●";
  color: var(--accent);
  margin-right: var(--s-2);
  font-size: 14px;
  line-height: 0;
  vertical-align: -1px;
}

/* =================== FOOTER =================== */
.footer { padding: var(--s-20) 0 var(--s-10); }
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--s-8);
  margin-bottom: var(--s-14);
  flex-wrap: wrap;
}
.footer-headline {
  font-family: var(--font-serif);
  font-weight: 350;
  font-size: clamp(28px, 3.8vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 18ch;
  font-variation-settings: "opsz" 144;
  text-wrap: balance;
}
.footer-headline em {
  font-style: italic;
  color: var(--accent-deep);
  font-variation-settings: "opsz" 144;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--s-1);
}
.footer-contact a {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.3;
  color: var(--ink);
  text-decoration: none;
  font-variation-settings: "opsz" 60;
  transition: color 0.2s var(--ease), font-style 0.2s var(--ease);
}
.footer-contact a:hover {
  color: var(--terra);
  font-style: italic;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: var(--s-6);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  gap: var(--s-3);
  flex-wrap: wrap;
}

/* =================== RESPONSIVE (shared chrome) =================== */
@media (max-width: 900px) {
  .container { padding: 0 var(--s-6); }
  .topbar-meta { display: none; }
  .footer { padding: var(--s-14) 0 var(--s-8); }
  .footer-top { flex-direction: column; align-items: flex-start; margin-bottom: var(--s-10); }
}