/* =========================================================
   DAC — Delta Aerospace Club
   Design system: blueprint / technical-drawing register marks
   No gradients. No glow. No drop shadows on cards.
   ========================================================= */

:root {
  /* ---- Light theme ---- */
  --bg: #F6F7F9;
  --bg-alt: #EDEFF3;
  --surface: #FFFFFF;
  --surface-2: #F1F3F6;
  --ink: #0B1220;
  --ink-soft: #4B5567;
  --ink-faint: #7C8698;
  --border: #D7DCE3;
  --border-strong: #B7BFCB;
  --accent: #2A4FD8;
  --accent-ink: #16234F;
  --accent-soft: #EAEEFC;
  --status-active: #1D7A4C;
  --status-active-bg: #E7F5ED;
  --status-planned: #A66200;
  --status-planned-bg: #FBF0DD;
  --status-complete: #4B5567;
  --status-complete-bg: #EDEFF3;
  --danger: #B4222C;

  --font-display: 'Archivo', 'Arial Narrow', sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --radius: 3px;
  --container: 1180px;

  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #0A0E17;
  --bg-alt: #0D1220;
  --surface: #10151F ;
  --surface-2: #131A28;
  --ink: #E8ECF4;
  --ink-soft: #A7B0C2;
  --ink-faint: #6B7488;
  --border: #232B3C;
  --border-strong: #333E56;
  --accent: #5D82FF;
  --accent-ink: #DCE5FF;
  --accent-soft: #161F38;
  --status-active: #3FBE82;
  --status-active-bg: #10241A;
  --status-planned: #E0A93E;
  --status-planned-bg: #241C0C;
  --status-complete: #A7B0C2;
  --status-complete-bg: #161B26;
  --danger: #E15B62;

  color-scheme: dark;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  color: var(--ink);
}

h1 { font-size: clamp(2.2rem, 4.4vw, 3.6rem); line-height: 1.05; letter-spacing: -0.015em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.35rem); line-height: 1.1; }
h3 { font-size: 1.25rem; }
p { color: var(--ink-soft); margin: 0 0 1em; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
}
.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}
.section-head p { font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { background: var(--ink); color: var(--bg); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: #fff; }

.btn-ghost {
  border-color: var(--border-strong);
  color: var(--ink-soft);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--ink); border-color: var(--ink); }

.btn-sm { padding: 9px 16px; font-size: 0.72rem; }
.btn svg { width: 14px; height: 14px; }

/* ---------- Corner-bracket frame (signature element) ---------- */
.bracket {
  position: relative;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
}
.bracket::before, .bracket::after,
.bracket .tick-tr, .bracket .tick-bl {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  pointer-events: none;
}
.bracket::before { top: -1px; left: -1px; border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.bracket::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent); }
.bracket .tick-tr { top: -1px; right: -1px; border-top: 2px solid var(--border-strong); border-right: 2px solid var(--border-strong); }
.bracket .tick-bl { bottom: -1px; left: -1px; border-bottom: 2px solid var(--border-strong); border-left: 2px solid var(--border-strong); }

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 40px; width: 40px; }
.brand-text { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; line-height: 1.1; }
.brand-text span { display: block; font-family: var(--font-mono); font-weight: 400; font-size: 0.62rem; letter-spacing: 0.14em; color: var(--ink-faint); text-transform: uppercase; margin-top: 2px; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 10px 14px;
  border-radius: var(--radius);
  transition: color 0.15s ease, background 0.15s ease;
}
.main-nav a:hover { color: var(--ink); background: var(--surface-2); }

.header-actions { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  width: 40px; height: 40px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--ink);
}
.theme-toggle:hover { border-color: var(--ink); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: var(--radius);
  align-items: center; justify-content: center;
  cursor: pointer;
}
.nav-toggle svg { width: 18px; height: 18px; }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  padding: 76px 0 88px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.hero .wrap { position: relative; z-index: 1; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
.hero-copy .eyebrow { margin-bottom: 20px; }
.hero-copy h1 { margin-bottom: 20px; }
.hero-copy .lede { font-size: 1.12rem; max-width: 520px; }
.hero-actions { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }

.hero-diagram { position: relative; }
.hero-diagram svg { width: 100%; height: auto; }
.hero-logo-frame {
  aspect-ratio: 1 / 1;
  max-width: 380px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  background: var(--surface);
}
.hero-logo-frame img { width: 100%; height: 100%; object-fit: contain; }

.readouts {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  padding-top: 24px;
}
.readout { padding-right: 20px; border-left: 1px solid var(--border); padding-left: 20px; }
.readout:first-child { border-left: none; padding-left: 0; }
.readout .val { font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; color: var(--ink); }
.readout .lbl { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-top: 4px; }

/* =========================================================
   Who we are
   ========================================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.pillars { display: grid; gap: 24px; margin-top: 8px; }
.pillar { display: grid; grid-template-columns: 56px 1fr; gap: 18px; }
.pillar-mark {
  width: 56px; height: 56px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--surface);
}
.pillar h3 { margin-bottom: 6px; font-size: 1.05rem; }
.pillar p { margin: 0; font-size: 0.95rem; }
.motto-block {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  background: var(--surface);
}
.motto-latin { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; }
.motto-en { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-faint); letter-spacing: 0.04em; margin-top: 8px; }

/* =========================================================
   Divisions
   ========================================================= */
.division-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.division-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.division-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.division-icon {
  width: 52px; height: 52px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  background: var(--accent-soft);
  flex-shrink: 0;
}
.division-icon svg { width: 28px; height: 28px; }
.division-code { font-family: var(--font-mono); font-size: 0.68rem; color: var(--ink-faint); letter-spacing: 0.08em; border: 1px solid var(--border); padding: 4px 8px; border-radius: var(--radius); }
.division-card h3 { font-size: 1.2rem; margin-bottom: 6px; }
.division-card > p { font-size: 0.93rem; margin-bottom: 0; }

.division-list-label, .division-tags-label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.division-examples { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.division-examples li {
  font-size: 0.86rem;
  color: var(--ink-soft);
  padding-left: 16px;
  position: relative;
}
.division-examples li::before {
  content: "";
  position: absolute; left: 0; top: 0.55em;
  width: 6px; height: 1px;
  background: var(--accent);
}
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.03em;
  border: 1px solid var(--border);
  color: var(--ink-soft);
  padding: 4px 9px;
  border-radius: var(--radius);
  background: var(--surface-2);
}
.division-card .btn { margin-top: auto; align-self: flex-start; }

/* =========================================================
   Projects
   ========================================================= */
.projects-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.filter-group { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 9px 16px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink-soft);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
}
.filter-btn:hover { border-color: var(--ink); color: var(--ink); }
.filter-btn.active { background: var(--ink); border-color: var(--ink); color: var(--bg); }

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card { display: flex; flex-direction: column; overflow: hidden; }
.project-media {
  aspect-ratio: 16/10;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.project-media img { width: 100%; height: 100%; object-fit: cover; }
.project-media .ph { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; color: var(--ink-faint); }
.project-media .ph svg { width: 40px; height: 40px; }
.project-body { padding: 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.project-badges { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.badge {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.badge-division { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.badge-status-active { color: var(--status-active); background: var(--status-active-bg); border-color: transparent; }
.badge-status-planned { color: var(--status-planned); background: var(--status-planned-bg); border-color: transparent; }
.badge-status-complete { color: var(--status-complete); background: var(--status-complete-bg); border-color: transparent; }
.project-body h3 { margin-bottom: 0; font-size: 1.08rem; }
.project-body p { font-size: 0.9rem; margin-bottom: 0; flex: 1; }
.project-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 24px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}

/* Future projects — roadmap list */
.roadmap { display: grid; gap: 0; border-top: 1px solid var(--border); }
.roadmap-item {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.roadmap-eta { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-faint); letter-spacing: 0.04em; }
.roadmap-info h3 { margin-bottom: 4px; font-size: 1.02rem; }
.roadmap-info p { margin: 0; font-size: 0.88rem; }
.roadmap-tags { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }

/* =========================================================
   Partners
   ========================================================= */
.partner-tiers { display: grid; gap: 40px; }
.tier-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 16px; }
.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.partner-slot {
  aspect-ratio: 3/2;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--surface);
  text-align: center;
  padding: 12px;
}
.partner-slot-logo { padding: 18px; }
.partner-slot-logo img { width: 100%; height: 100%; object-fit: contain; }
.partner-cta {
  margin-top: 48px;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  background: var(--surface);
}
.partner-cta h3 { margin-bottom: 6px; }
.partner-cta p { margin: 0; max-width: 460px; }

/* =========================================================
   Donate
   ========================================================= */
.donate-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.impact-list { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 18px; }
.impact-list li { display: grid; grid-template-columns: 64px 1fr; gap: 16px; align-items: baseline; }
.impact-list .amt { font-family: var(--font-mono); font-weight: 600; color: var(--accent); font-size: 0.92rem; }
.impact-list .desc { font-size: 0.92rem; color: var(--ink-soft); }
.donate-panel { padding: 32px; }
.donate-panel h3 { margin-bottom: 10px; }

/* =========================================================
   Contact
   ========================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
}
.contact-info-list { display: grid; gap: 22px; margin-top: 24px; }
.contact-info-item { display: grid; grid-template-columns: 40px 1fr; gap: 14px; }
.contact-info-item .ic { width: 40px; height: 40px; border: 1px solid var(--border); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: var(--accent); }
.contact-info-item .ic svg { width: 18px; height: 18px; }
.contact-info-item .lbl { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }
.contact-info-item .val { font-size: 0.95rem; color: var(--ink); }
.social-row { display: flex; gap: 10px; margin-top: 28px; }
.social-row a { width: 40px; height: 40px; border: 1px solid var(--border); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: var(--ink-soft); }
.social-row a:hover { border-color: var(--ink); color: var(--ink); }
.social-row svg { width: 17px; height: 17px; }

.form-panel { padding: 32px; }
.form-row { display: grid; gap: 6px; margin-bottom: 18px; }
.form-row.two { grid-template-columns: 1fr 1fr; gap: 18px; }
label { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }
input, textarea, select {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--ink);
  width: 100%;
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}
textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.78rem; color: var(--ink-faint); margin-top: 14px; }

/* =========================================================
   Footer
   ========================================================= */
.site-footer { padding: 56px 0 32px; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
.footer-brand { display: flex; gap: 12px; align-items: flex-start; }
.footer-brand img { height: 38px; width: 38px; margin-top: 2px; }
.footer-brand p { font-size: 0.86rem; max-width: 260px; margin-top: 8px; }
.footer-col h4 { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 14px; font-weight: 500; }
.footer-col a { display: block; font-size: 0.88rem; color: var(--ink-soft); margin-bottom: 10px; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  flex-wrap: wrap;
  gap: 12px;
}

/* =========================================================
   Admin page
   ========================================================= */
.admin-shell { padding: 48px 0 96px; }
.admin-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: start; }
.admin-panel { padding: 32px; }
.admin-list { display: grid; gap: 12px; }
.admin-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.admin-row-title { font-size: 0.92rem; font-weight: 600; }
.admin-row-meta { font-family: var(--font-mono); font-size: 0.68rem; color: var(--ink-faint); margin-top: 3px; letter-spacing: 0.03em; }
.admin-row-actions { display: flex; gap: 8px; }
.icon-btn {
  width: 32px; height: 32px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { border-color: var(--danger); color: var(--danger); }
.icon-btn svg { width: 14px; height: 14px; }
.admin-empty { color: var(--ink-faint); font-family: var(--font-mono); font-size: 0.82rem; padding: 24px 0; }
.notice {
  padding: 14px 16px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--ink-soft);
}
.notice.warn { border-color: var(--status-planned); color: var(--status-planned); background: var(--status-planned-bg); }
.notice.ok { border-color: var(--status-active); color: var(--status-active); background: var(--status-active-bg); }

/* =========================================================
   Page header (admin, simple pages)
   ========================================================= */
.page-header { padding: 56px 0 32px; border-bottom: 1px solid var(--border); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-diagram { order: -1; max-width: 340px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .division-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .donate-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .admin-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .readouts { grid-template-columns: repeat(2, 1fr); row-gap: 20px; }
  .readout:nth-child(3) { border-left: none; padding-left: 0; }
  .project-grid { grid-template-columns: 1fr; }
  .roadmap-item { grid-template-columns: 1fr; gap: 6px; }
  .roadmap-tags { justify-content: flex-start; }
  .footer-top { grid-template-columns: 1fr; }
  .form-row.two { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
}

.mobile-nav {
  display: none;
  flex-direction: column;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 16px 28px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}