/* ============================================================
   Litmus — Shared design system
   ============================================================ */

:root {
  --ink: #1a1814;
  --ink-soft: #4a4540;
  --ink-mute: #8a8278;
  --paper: #f5efe4;
  --paper-deep: #ebe3d4;
  --paper-soft: #faf6ee;
  --coral: #e8553d;
  --coral-deep: #c43d28;
  --moss: #4a6b3a;
  --sky: #3a6b8a;
  --amber: #d4a046;
  --line: #d6cdb8;
  --shadow-sm: 0 1px 2px rgba(26, 24, 20, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 24, 20, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 24, 20, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-display: 'Fraunces', 'Times New Roman', serif;
  --font-body: 'Outfit', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    radial-gradient(circle at 10% 15%, rgba(232, 85, 61, 0.04), transparent 45%),
    radial-gradient(circle at 90% 85%, rgba(58, 107, 138, 0.04), transparent 45%);
  min-height: 100vh;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.02em; line-height: 1.15; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.35rem; }

a { color: var(--coral-deep); text-decoration: none; border-bottom: 1px solid currentColor; }
a:hover { color: var(--ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); background: var(--coral-deep); border-color: var(--coral-deep); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn.secondary { background: transparent; color: var(--ink); }
.btn.secondary:hover { background: var(--ink); color: var(--paper); }
.btn.coral { background: var(--coral); border-color: var(--coral); }
.btn.coral:hover { background: var(--coral-deep); border-color: var(--coral-deep); }
.btn.small { padding: 0.5rem 1rem; font-size: 0.9rem; }
.btn.ghost { background: transparent; color: var(--ink-soft); border-color: var(--line); }
.btn.ghost:hover { background: var(--paper-deep); color: var(--ink); border-color: var(--ink); }
.btn.danger { background: transparent; color: var(--coral-deep); border-color: var(--coral); }
.btn.danger:hover { background: var(--coral); color: var(--paper); border-color: var(--coral); }

/* ---------- Form fields ---------- */
.field { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1rem; }
.field label { font-size: 0.85rem; font-weight: 500; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.08em; }
.field input[type="text"], .field input[type="email"], .field input[type="password"], .field textarea, .field select {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.75rem 1rem;
  background: var(--paper-soft);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--ink);
  background: #fff;
}
.field textarea { font-family: var(--font-mono); font-size: 0.85rem; min-height: 200px; resize: vertical; }

.checkbox-field { display: flex; align-items: center; gap: 0.6rem; cursor: pointer; padding: 0.65rem 0; }
.checkbox-field input[type="checkbox"] { width: 1.15rem; height: 1.15rem; accent-color: var(--coral); cursor: pointer; }
.checkbox-field label { font-size: 0.95rem; color: var(--ink); cursor: pointer; text-transform: none; letter-spacing: 0; font-weight: 400; }

/* ---------- Layout ---------- */
.container { max-width: 1100px; margin: 0 auto; padding: 2rem 1.5rem; }
.container.narrow { max-width: 640px; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--line);
  background: var(--paper-soft);
}
.topbar .brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  font-style: italic;
  color: var(--ink);
  text-decoration: none;
  border: none;
}
.topbar .brand span { color: var(--coral); }
.topbar nav { display: flex; gap: 1.5rem; align-items: center; }
.topbar nav a { color: var(--ink-soft); border: none; font-size: 0.95rem; }
.topbar nav a:hover { color: var(--ink); }

/* ---------- Cards ---------- */
.card {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}
.card.elevated { box-shadow: var(--shadow-md); }

/* ---------- Toasts / messages ---------- */
.message { padding: 0.85rem 1.1rem; border-radius: var(--radius-sm); margin: 0.75rem 0; font-size: 0.95rem; }
.message.error { background: rgba(232, 85, 61, 0.12); color: var(--coral-deep); border: 1px solid rgba(232, 85, 61, 0.3); }
.message.success { background: rgba(74, 107, 58, 0.12); color: var(--moss); border: 1px solid rgba(74, 107, 58, 0.3); }
.message.info { background: rgba(58, 107, 138, 0.1); color: var(--sky); border: 1px solid rgba(58, 107, 138, 0.25); }
.message.warning { background: rgba(212, 160, 70, 0.12); color: #8a5d10; border: 1px solid rgba(212, 160, 70, 0.4); }

/* ---------- Misc ---------- */
.muted { color: var(--ink-mute); }
.mono { font-family: var(--font-mono); }
.center { text-align: center; }
.stack > * + * { margin-top: 1rem; }
.row { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }

.tag {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 999px;
  background: var(--paper-deep);
  color: var(--ink-soft);
  border: 1px solid var(--line);
}
.tag.live { background: var(--coral); color: white; border-color: var(--coral); animation: pulse 2s infinite; }
.tag.closed { background: var(--ink-mute); color: white; border-color: var(--ink-mute); }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(232, 85, 61, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(232, 85, 61, 0); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeIn 0.4s ease forwards; }

/* ---------- Loading spinner ---------- */
.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--line);
  border-top-color: var(--coral);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }

/* ============================================================
   MOBILE — phones and narrow tablets
   ------------------------------------------------------------
   Everything above is the canonical desktop experience.
   Everything below is overrides that only apply at ≤640px.
   Keep desktop untouched.
   ============================================================ */
@media (max-width: 640px) {
  /* Tighten the global container padding so content gets edge-to-edge space */
  .container { padding: 1.25rem 1rem; }

  /* Topbar (used by some pages) — stack brand + nav on two rows */
  .topbar {
    padding: 1rem 1rem;
    flex-wrap: wrap;
    row-gap: 0.5rem;
  }
  .topbar nav { gap: 0.85rem; }
  .topbar nav a { font-size: 0.88rem; }

  /* Buttons — slightly larger tap targets on small screens */
  .btn { padding: 0.85rem 1.25rem; }
  .btn.small { padding: 0.55rem 0.9rem; font-size: 0.85rem; }

  /* Form inputs — ensure 16px+ font-size so iOS Safari doesn't zoom on focus */
  .field input[type="text"],
  .field input[type="email"],
  .field input[type="password"],
  .field input[type="number"],
  .field select {
    font-size: 16px;
  }

  /* Headings scale down a touch */
  h1 { font-size: clamp(1.6rem, 8vw, 2.4rem); }
  h2 { font-size: clamp(1.3rem, 6vw, 1.8rem); }

  /* Cards / modals — less internal padding */
  .card { padding: 1.25rem; }

  /* Tag pills */
  .tag { padding: 0.2rem 0.5rem; font-size: 0.7rem; }
}

/* Very narrow phones (≤380px) — extra trims */
@media (max-width: 380px) {
  .container { padding: 1rem 0.75rem; }
  .topbar { padding: 0.85rem 0.75rem; }
}