/* =====================================================================
   Theme tokens.
   Precedence (highest first):
     1. html[data-theme="..."]    — explicit user choice (theme toggle)
     2. @media (prefers-color-scheme: dark) — system preference
     3. :root                     — default light theme
   ===================================================================== */
:root {
  /* Light theme (default) */
  --ink:        #1a1f2b;
  --ink-2:      #2d3340;
  --ink-3:      #4a5160;
  --muted:      #6b7280;
  --line:       #e5e7eb;
  --bg:         #ffffff;
  --bg-soft:    #f7f8fb;
  --bg-card:    #ffffff;
  --brand-purple: #a85fbf;
  --brand-blue:   #5b7dd9;
  --brand-teal:   #3fb8c4;
  --brand-green:  #7bc85f;
  --brand-lime:   #c5d86d;
  --brand-gradient: linear-gradient(135deg, #a85fbf 0%, #5b7dd9 35%, #3fb8c4 65%, #7bc85f 100%);
  --radius:    14px;
  --radius-lg: 22px;
  --ease:      cubic-bezier(.2,.7,.2,1);
  --shadow-sm: 0 1px 2px rgba(15,19,32,.04), 0 1px 3px rgba(15,19,32,.06);
  --shadow-md: 0 4px 12px rgba(15,19,32,.06), 0 8px 24px rgba(15,19,32,.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink:     #f3f4f7;
    --ink-2:   #d8dbe3;
    --ink-3:   #b3b8c4;
    --muted:   #8b91a1;
    --line:    #2a2f3d;
    --bg:      #0f1320;
    --bg-soft: #161b2c;
    --bg-card: #181d2e;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
    --shadow-md: 0 8px 24px rgba(0,0,0,.4);
  }
}

/* Explicit user choice overrides system preference */
html[data-theme="light"] {
  --ink:     #1a1f2b;
  --ink-2:   #2d3340;
  --ink-3:   #4a5160;
  --muted:   #6b7280;
  --line:    #e5e7eb;
  --bg:      #ffffff;
  --bg-soft: #f7f8fb;
  --bg-card: #ffffff;
  --shadow-sm: 0 1px 2px rgba(15,19,32,.04), 0 1px 3px rgba(15,19,32,.06);
  --shadow-md: 0 4px 12px rgba(15,19,32,.06), 0 8px 24px rgba(15,19,32,.05);
}
html[data-theme="dark"] {
  --ink:     #f3f4f7;
  --ink-2:   #d8dbe3;
  --ink-3:   #b3b8c4;
  --muted:   #8b91a1;
  --line:    #2a2f3d;
  --bg:      #0f1320;
  --bg-soft: #161b2c;
  --bg-card: #181d2e;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(1200px 700px at 20% 0%,  rgba(168,95,191,.10), transparent 60%),
    radial-gradient(1000px 600px at 90% 100%, rgba(91,125,217,.08), transparent 60%);
  background-attachment: fixed;
}

a { color: var(--brand-teal); text-decoration: none; }
a:hover { color: var(--brand-green); }
code { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: .9em; background: var(--bg-soft); padding: 2px 6px; border-radius: 4px; }

.brand-mark {
  display: inline-block;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -.01em;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 18px;
  cursor: pointer;
  transition: all .15s var(--ease);
  color: var(--ink);
  background: transparent;
  text-decoration: none;
}
.btn:hover { background: var(--bg-soft); color: var(--ink); }
.btn-primary {
  background: var(--brand-gradient);
  color: #fff;
  border: none;
}
.btn-primary:hover { color: #fff; filter: brightness(1.08); }
.btn-ghost { border-color: var(--line); }
.btn-lg { padding: 14px 24px; font-size: 16px; }

.error {
  background: rgba(196,68,68,.12);
  color: #ff9aa0;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid rgba(196,68,68,.3);
  font-size: 14px;
  margin: 0;
}
.field-error { color: #ff9aa0; font-size: 13px; margin: 4px 0 0; }
.success {
  background: rgba(123,200,95,.12);
  color: #7bc85f;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid rgba(123,200,95,.3);
  font-size: 14px;
  margin: 0 0 16px;
}

.hero {
  max-width: 760px;
  margin: 80px auto;
  padding: 0 24px;
  text-align: center;
}
.hero-title {
  font-size: clamp(40px, 7vw, 64px);
  line-height: 1.05;
  letter-spacing: -.02em;
  font-weight: 800;
  margin: 0 0 16px;
}
.hero-sub {
  font-size: 18px;
  color: var(--ink-3);
  margin: 0 0 32px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.auth-card {
  max-width: 420px;
  margin: 80px auto;
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
}
.auth-card .brand-mark { font-size: 28px; margin-bottom: 8px; display: block; }
.auth-card form { margin-top: 24px; }

.stack { display: grid; gap: 14px; }
.stack label { display: grid; gap: 4px; font-size: 13px; color: var(--ink-3); font-weight: 500; }
.stack input {
  font: inherit;
  font-size: 15px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--ink);
  outline: none;
  transition: border-color .15s var(--ease);
}
.stack input:focus { border-color: var(--brand-blue); }

.btn-google {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  font: inherit;
  font-weight: 500;
  font-size: 15px;
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
  transition: background .15s var(--ease), border-color .15s var(--ease);
  text-decoration: none;
}
.btn-google:hover { background: var(--bg-soft); border-color: var(--brand-blue); color: var(--ink); }
.btn-google svg { width: 18px; height: 18px; flex-shrink: 0; }

.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin: 4px 0;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line);
}

.slug-row {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-soft);
  overflow: hidden;
}
.slug-row:focus-within { border-color: var(--brand-blue); }
.slug-row input {
  flex: 1;
  border: none;
  border-radius: 0;
  background: transparent;
  padding: 11px 13px;
}
.slug-row input:focus { border: none; }
.slug-suffix {
  display: flex;
  align-items: center;
  padding: 0 13px;
  color: var(--muted);
  background: rgba(0,0,0,.2);
  font-size: 14px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
}
.topbar-left { display: flex; align-items: center; gap: 14px; font-weight: 600; }
.topbar-actions { display: flex; gap: 10px; align-items: center; }

.page { max-width: 1180px; margin: 0 auto; padding: 32px 24px; }
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.card.center { text-align: center; }
.card h2 { margin: 0 0 8px; font-size: 20px; }

.legal {
  max-width: 720px;
  margin: 60px auto;
  padding: 0 24px;
  line-height: 1.65;
  color: var(--ink-2);
}
.legal h1 { font-size: 36px; letter-spacing: -.01em; margin: 0 0 8px; color: var(--ink); }
.legal h2 { font-size: 18px; margin: 36px 0 8px; color: var(--ink); }
.legal p, .legal ul { margin: 0 0 14px; }
.legal ul { padding-left: 24px; }
.legal li { margin-bottom: 6px; }
.legal a { color: var(--brand-teal); }
.legal code { font-size: 13px; }