/* Shared styles for preview.reqs.tech.
   Same design system as the apps repo — Lora + DM Sans, teal/terra, dark by
   default with a light toggle. Kept in one file rather than inlined per page
   because /cnkc is a multi-page site and six copies of this would drift. */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button { font-family: inherit; cursor: pointer; }

:root {
  --teal:        #2E7D7A;
  --teal-bright: #4AADAA;
  --terra:       #C4533A;
  --terra-bright:#E07055;
  --cream:       #EDE8DC;
  --navy-deep:   #1A2535;
  --serif:       'Lora', Georgia, serif;
  --sans:        'DM Sans', sans-serif;
}

[data-theme="dark"] {
  --bg:          #111418;
  --bg2:         #181D24;
  --bg3:         #1E2530;
  --surface:     #222A36;
  --border:      rgba(255,255,255,0.07);
  --border-mid:  rgba(255,255,255,0.13);
  --text:        #EDE8DC;
  --text-mid:    rgba(237,232,220,0.62);
  --text-dim:    rgba(237,232,220,0.35);
  --accent:      #4AADAA;
  --accent2:     #E07055;
  --tag-bg:      rgba(74,173,170,0.09);
  --tag-border:  rgba(74,173,170,0.22);
}

[data-theme="light"] {
  --bg:          #EEEAE0;
  --bg2:         #E8E3D8;
  --bg3:         #E0DAD0;
  --surface:     #F4F0E8;
  --border:      rgba(26,37,53,0.09);
  --border-mid:  rgba(26,37,53,0.15);
  --text:        #1A2535;
  --text-mid:    #4A5568;
  --text-dim:    #9A9A9A;
  --accent:      #2E7D7A;
  --accent2:     #C4533A;
  --tag-bg:      rgba(46,125,122,0.07);
  --tag-border:  rgba(46,125,122,0.2);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── nav ── */
nav.top {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  transition: background 0.3s;
}

.nav-left {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 13px;
}

.nav-home {
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}
.nav-home:hover { color: var(--accent); }

.nav-sep { color: var(--border-mid); font-size: 14px; }

.nav-current {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-mid);
}

.theme-btn {
  background: none;
  border: 1px solid var(--border-mid);
  border-radius: 999px;
  padding: 6px 15px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.2s, border-color 0.2s;
}
.theme-btn:hover { color: var(--text); }

/* ── section nav, for multi-page client sites ── */
.site-nav {
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  gap: 1.75rem;
  overflow-x: auto;
}

.site-nav a {
  display: block;
  padding: 0.9rem 0;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.site-nav a:hover { color: var(--text); }
.site-nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ── main ── */
main {
  flex: 1;
  max-width: 860px;
  margin: 0 auto;
  padding: 5rem 2rem 6rem;
  width: 100%;
}

/* ── page header ── */
.page-header { margin-bottom: 3.5rem; }

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  animation: fadeUp 0.45s ease both;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

.page-header h1 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 0.6rem;
  animation: fadeUp 0.45s 0.08s ease both;
}

.page-sub {
  font-size: 15px;
  font-weight: 300;
  color: var(--text-mid);
  line-height: 1.7;
  animation: fadeUp 0.45s 0.16s ease both;
}

h2 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  margin-bottom: 1.25rem;
}

.prose p { color: var(--text-mid); margin-bottom: 1rem; max-width: 60ch; }
.prose p:last-child { margin-bottom: 0; }

/* ── app / site list ── */
.app-list { border-top: 1px solid var(--border); }

.app-card {
  display: block;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: background 0.2s;
}

.app-card-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
}

.app-card:hover .app-name { color: var(--accent); }

.app-meta {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.app-name {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 400;
  transition: color 0.2s;
}

.app-tag {
  font-size: 11px;
  color: var(--accent);
  padding: 3px 10px;
  border: 1px solid var(--tag-border);
  background: var(--tag-bg);
  border-radius: 999px;
  white-space: nowrap;
  letter-spacing: 0.04em;
}

.app-desc {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.65;
  max-width: 500px;
}

.app-platform {
  margin-top: 0.9rem;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-mid);
}

.app-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  padding: 10px 18px;
  border-radius: 2px;
  white-space: nowrap;
  flex-shrink: 0;
  align-self: center;
  transition: background 0.2s, transform 0.2s;
}
.app-card:hover .app-arrow {
  background: var(--accent2);
  transform: translateX(3px);
}

/* ── data lists: calendar events, document downloads ── */
.data-list { border-top: 1px solid var(--border); }

.data-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
}

a.data-row:hover .data-title { color: var(--accent); }

.data-title {
  font-family: var(--serif);
  font-size: 1.05rem;
  transition: color 0.2s;
}

.data-when {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.data-note {
  font-size: 14px;
  color: var(--text-mid);
  margin-top: 0.3rem;
  max-width: 55ch;
}

.data-side {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Placeholder shown while Firestore loads, and when it returns nothing. */
.state {
  padding: 2.5rem 0;
  font-size: 14px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
.state.error { color: var(--accent2); }

/* ── contact ── */
.contact-line {
  display: flex;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}
.contact-line:first-child { border-top: 1px solid var(--border); }

.contact-label {
  min-width: 7rem;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding-top: 3px;
}

.contact-line a { color: var(--accent); text-decoration: none; }
.contact-line a:hover { text-decoration: underline; }

/* ── notice ── */
.notice {
  border: 1px solid var(--tag-border);
  background: var(--tag-bg);
  border-radius: 3px;
  padding: 1.1rem 1.25rem;
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 2.5rem;
}
.notice strong { color: var(--text); font-weight: 500; }

/* ── footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-text {
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.footer-links { display: flex; gap: 1.5rem; }

.footer-links a {
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 680px) {
  nav.top { padding: 0 1.25rem; }
  .site-nav { padding: 0 1.25rem; gap: 1.25rem; }
  main { padding: 3.5rem 1.25rem 5rem; }
  footer { padding: 1.25rem; justify-content: center; text-align: center; }
  .app-card-inner { flex-direction: column; }
  .data-row { flex-direction: column; gap: 0.4rem; }
  .contact-line { flex-direction: column; gap: 0.2rem; }
}