/* =========================================================
   Goodarzi.net — shared design system
   Editorial · Swiss-precise · warm & human
   ========================================================= */

:root {
  /* ---- warm paper / ink palette ---- */
  --paper:      oklch(0.988 0.004 95);
  --paper-2:    oklch(0.969 0.006 92);
  --paper-3:    oklch(0.945 0.007 90);
  --ink:        oklch(0.235 0.012 65);
  --ink-soft:   oklch(0.430 0.011 65);
  --ink-faint:  oklch(0.610 0.009 70);
  --line:       oklch(0.885 0.006 85);
  --line-soft:  oklch(0.925 0.005 88);

  /* ---- accent (overridden per person) ---- */
  --accent:       oklch(0.50 0.045 65);
  --accent-soft:  oklch(0.94 0.02 65);
  --accent-ink:   oklch(0.40 0.06 65);

  /* ---- type ---- */
  --serif: "Spectral", Georgia, "Times New Roman", serif;
  --sans:  "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  /* ---- metrics ---- */
  --maxw: 1240px;
  --gutter: clamp(20px, 5vw, 72px);
  --radius: 4px;
}

/* ---- Farsi / RTL swaps to Vazirmatn ---- */
[dir="rtl"] {
  --serif: "Vazirmatn", "Spectral", serif;
  --sans:  "Vazirmatn", "Hanken Grotesk", sans-serif;
  --mono:  "Vazirmatn", "JetBrains Mono", monospace;
}

/* ============ DARK THEME ============ */
:root[data-theme="dark"] {
  --paper:      oklch(0.205 0.008 75);
  --paper-2:    oklch(0.245 0.009 75);
  --paper-3:    oklch(0.285 0.010 75);
  --ink:        oklch(0.930 0.006 90);
  --ink-soft:   oklch(0.780 0.008 85);
  --ink-faint:  oklch(0.585 0.009 80);
  --line:       oklch(0.340 0.010 75);
  --line-soft:  oklch(0.290 0.009 75);
  --accent:       oklch(0.70 0.10 75);
  --accent-soft:  oklch(0.32 0.05 75);
  --accent-ink:   oklch(0.82 0.09 75);
}

/* ============ PER-PERSON ACCENTS (theme-aware) ============ */
.accent-amir  { --accent: oklch(0.56 0.13 41);  --accent-soft: oklch(0.93 0.035 41);  --accent-ink: oklch(0.46 0.105 41); }
.accent-hamid { --accent: oklch(0.56 0.13 245); --accent-soft: oklch(0.93 0.035 245); --accent-ink: oklch(0.46 0.105 245); }
:root[data-theme="dark"] .accent-amir  { --accent: oklch(0.72 0.14 47);  --accent-soft: oklch(0.33 0.06 47);  --accent-ink: oklch(0.82 0.11 47); }
:root[data-theme="dark"] .accent-hamid { --accent: oklch(0.71 0.13 250); --accent-soft: oklch(0.33 0.06 250); --accent-ink: oklch(0.83 0.10 250); }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv05";
  transition: background-color .35s ease, color .35s ease;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

::selection { background: var(--accent-soft); color: var(--accent-ink); }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; }
p { margin: 0; text-wrap: pretty; }

/* ---------- layout helpers ---------- */
.shell { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.row { display: flex; gap: 16px; align-items: center; }
.col { display: flex; flex-direction: column; }

/* ---------- typographic atoms ---------- */
.mono-kicker {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.mono-kicker .num { color: var(--accent); }
[dir="rtl"] .mono-kicker { letter-spacing: 0; }

.display {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.015em;
}
[dir="rtl"] .display { letter-spacing: 0; line-height: 1.15; }

.serif-lead {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(20px, 2.6vw, 30px);
  line-height: 1.42;
  color: var(--ink-soft);
  letter-spacing: -0.01em;
}
[dir="rtl"] .serif-lead { font-weight: 400; line-height: 1.7; }

.hairline { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--paper) 86%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar .shell { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 20px; }
.wordmark {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--ink);
  display: inline-flex; align-items: center; gap: 9px;
}
.wordmark .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; }
.wordmark .path { color: var(--ink-faint); }

.topnav { display: flex; gap: 28px; align-items: center; }
.topnav a {
  font-size: 13.5px; color: var(--ink-soft); position: relative; padding: 4px 0;
  transition: color .2s;
}
.topnav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -2px; height: 1.5px;
  background: var(--accent); transition: right .28s cubic-bezier(.2,.7,.2,1);
}
.topnav a:hover { color: var(--ink); }
.topnav a:hover::after { right: 0; }

/* ---------- language switch ---------- */
.lang {
  display: inline-flex; align-items: center;
  border: 1px solid var(--line); border-radius: 100px; padding: 3px;
  background: var(--paper);
}
.lang button {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase;
  border: 0; background: transparent; color: var(--ink-faint);
  padding: 5px 11px; border-radius: 100px; cursor: pointer;
  transition: all .2s; font-weight: 500;
}
.lang button:hover { color: var(--ink); }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans); font-size: 14.5px; font-weight: 500;
  padding: 13px 20px; border-radius: 5px; cursor: pointer;
  border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  transition: transform .15s, background .2s, box-shadow .2s; text-align: start;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px -12px var(--ink); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink); box-shadow: none; }
.btn.accent { background: var(--accent); border-color: var(--accent); }
.btn .ico { width: 16px; height: 16px; flex: none; }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }
[dir="rtl"] .btn:hover .arrow { transform: translateX(-3px); }

/* ---------- portrait placeholder ---------- */
.portrait {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background:
    repeating-linear-gradient(135deg, var(--paper-3) 0 9px, var(--paper-2) 9px 18px);
  border: 1px solid var(--line);
  display: grid; place-items: center; aspect-ratio: 4 / 5;
}
.portrait .tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-faint); background: var(--paper);
  padding: 7px 12px; border: 1px solid var(--line); border-radius: 100px;
}
.portrait .corner {
  position: absolute; top: 12px; inset-inline-start: 12px;
  width: 14px; height: 14px; border-top: 1.5px solid var(--accent); border-inline-start: 1.5px solid var(--accent);
}
.portrait .corner.br { top: auto; inset-inline-start: auto; bottom: 12px; inset-inline-end: 12px;
  border-top: 0; border-inline-start: 0; border-bottom: 1.5px solid var(--accent); border-inline-end: 1.5px solid var(--accent); }

/* ---------- sections ---------- */
.section { padding-block: clamp(56px, 9vw, 120px); }
.section-head { display: grid; grid-template-columns: 1fr; gap: 14px; margin-bottom: clamp(32px, 5vw, 64px); }
.section-title { font-family: var(--serif); font-size: clamp(26px, 3.6vw, 40px); letter-spacing: -0.01em; }
[dir="rtl"] .section-title { letter-spacing: 0; }

footer.site {
  border-top: 1px solid var(--line); padding-block: 48px; margin-top: 40px;
  color: var(--ink-faint); font-size: 13.5px;
}
footer.site .shell { display: flex; flex-wrap: wrap; gap: 24px 40px; justify-content: space-between; align-items: baseline; }
footer.site a { color: var(--ink-soft); }
footer.site a:hover { color: var(--ink); }

/* ---------- theme toggle ---------- */
.theme-toggle {
  width: 38px; height: 38px; flex: none; display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 50%; background: var(--paper);
  color: var(--ink-soft); cursor: pointer; transition: color .2s, border-color .2s, transform .2s;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-faint); }
.theme-toggle:active { transform: scale(0.92); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .ico-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .ico-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .ico-sun { display: block; }

/* active nav link (scrollspy) */
.topnav a[aria-current="true"] { color: var(--ink); }
.topnav a[aria-current="true"]::after { right: 0; }

/* reduce motion */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto; }
}