/* =============================================================================
   Smart Publishing House — theme.css
   Palette (from product brief):
     --bg-grad-from:  #0f5b73
     --bg-grad-to:    #1581a3
     --surface-dark:  #093442   (cards, buttons, nav)
     --text-on-dark:  #ffffff
   Recommended improvement (applied): forms and tables use dark text on white.
   Layout uses CSS logical properties so AR (RTL) mirrors automatically.
   ============================================================================= */

:root {
  --bg-grad-from: #0f5b73;
  --bg-grad-to: #1581a3;
  --surface-dark: #093442;
  --surface-dark-2: #0c4054;
  --surface-light: #ffffff;
  --text-on-dark: #ffffff;
  --text-on-dark-muted: rgba(255, 255, 255, 0.72);
  --text-on-light: #0a2530;
  --text-on-light-muted: #4a5f6a;
  --accent: #5dcaa5;
  --accent-hover: #3eb88c;
  --danger: #d85a30;
  --warning: #ef9f27;
  --info: #378add;
  --success: #5dcaa5;
  --border-on-dark: rgba(255, 255, 255, 0.14);
  --border-on-light: #d7e0e4;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.18);
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
               "Noto Sans Arabic", "Noto Sans", sans-serif;
  color: var(--text-on-dark);
  background: linear-gradient(135deg, var(--bg-grad-from), var(--bg-grad-to)) fixed;
  line-height: 1.6;
}

/* RTL adjustments — logical properties handle most of this for free */
html[dir="rtl"] body { font-family: "Noto Sans Arabic", "Segoe UI", system-ui, sans-serif; }

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

/* ---------- Top navigation ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.9rem 1.5rem;
  background: var(--surface-dark);
  border-block-end: 1px solid var(--border-on-dark);
}
.nav .brand { font-weight: 600; font-size: 1.05rem; color: var(--text-on-dark); }
.nav a { color: var(--text-on-dark-muted); }
.nav a:hover, .nav a.active { color: var(--text-on-dark); }
.nav .spacer { flex: 1; }
.nav .lang-switch a {
  padding-inline: 0.4rem;
  border-inline-end: 1px solid var(--border-on-dark);
}
.nav .lang-switch a:last-child { border-inline-end: 0; }

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

h1, h2, h3 { color: var(--text-on-dark); margin-block: 0.6rem 0.4rem; font-weight: 600; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }

p { margin-block: 0.4rem; }
.muted { color: var(--text-on-dark-muted); }

/* ---------- Cards (dark surface) ---------- */
.card {
  background: var(--surface-dark);
  color: var(--text-on-dark);
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-block: 1rem;
  box-shadow: var(--shadow-sm);
}
.card h2, .card h3 { margin-block-start: 0; }
.card .meta { color: var(--text-on-dark-muted); font-size: 0.9rem; }

/* Grid for card lists */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  background: var(--surface-dark);
  color: var(--text-on-dark);
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}
.btn:hover { background: var(--surface-dark-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #0a2530; border-color: var(--accent); font-weight: 600; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; }

/* ---------- Forms (dark text on white — per UX improvement) ---------- */
.form-panel {
  background: var(--surface-light);
  color: var(--text-on-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  max-width: 540px;
  margin-inline: auto;
  box-shadow: var(--shadow-sm);
}
.form-panel h1, .form-panel h2 { color: var(--text-on-light); }
.form-panel .field { margin-block: 0.85rem; }
.form-panel label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-on-light-muted);
  margin-block-end: 0.25rem;
}
.form-panel input[type="text"],
.form-panel input[type="email"],
.form-panel input[type="password"],
.form-panel select,
.form-panel textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border-on-light);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--text-on-light);
  font-size: 1rem;
}
.form-panel input:focus, .form-panel select:focus, .form-panel textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}
.form-panel .actions { margin-block-start: 1.1rem; display: flex; gap: 0.6rem; }
.form-panel .errors { color: var(--danger); font-size: 0.85rem; margin-block-start: 0.25rem; }
.form-panel .checkbox-field { display: flex; align-items: center; gap: 0.5rem; }
.form-panel .checkbox-field label { margin: 0; }

/* Inline search form on dark — use white pill input */
.search-bar {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
  margin-block: 1rem;
  flex-wrap: wrap;
}
.search-bar input[type="text"] {
  flex: 1 1 320px;
  padding: 0.6rem 0.9rem;
  border: 0;
  border-radius: var(--radius-md);
  background: var(--surface-light);
  color: var(--text-on-light);
  font-size: 1rem;
}
.search-bar select {
  padding: 0.55rem 0.6rem;
  background: var(--surface-light);
  color: var(--text-on-light);
  border: 0;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
}

/* ---------- Tables (dark text on white) ---------- */
.table-panel {
  background: var(--surface-light);
  color: var(--text-on-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
table.data {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface-light);
  color: var(--text-on-light);
}
table.data th, table.data td {
  padding: 0.65rem 0.85rem;
  border-block-end: 1px solid var(--border-on-light);
  text-align: start;
}
table.data thead th {
  background: #f3f6f7;
  font-weight: 600;
  color: var(--text-on-light);
}

/* ---------- Flash messages ---------- */
.flashes { list-style: none; padding: 0; margin: 0 0 1rem; }
.flashes li {
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-md);
  margin-block-end: 0.4rem;
  background: var(--surface-dark-2);
  border: 1px solid var(--border-on-dark);
  color: var(--text-on-dark);
}
.flashes li.danger  { background: #4a1b0c; border-color: #993c1d; }
.flashes li.warning { background: #633806; border-color: #ba7517; }
.flashes li.success { background: #085041; border-color: #1d9e75; }
.flashes li.info    { background: #0c447c; border-color: #378add; }

/* ---------- Provenance + result blocks ---------- */
.answer-card {
  background: var(--surface-dark);
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}
.answer-card .answer-body { font-size: 1.02rem; line-height: 1.7; white-space: pre-wrap; }
.provenance {
  margin-block-start: 1rem;
  padding-block-start: 0.8rem;
  border-block-start: 1px dashed var(--border-on-dark);
  font-size: 0.85rem;
  color: var(--text-on-dark-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
}
.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--accent);
  color: #04342c;
  font-size: 0.75rem;
  font-weight: 600;
}
.citations { margin-block-start: 0.6rem; font-size: 0.9rem; color: var(--text-on-dark-muted); }
.citations ol { padding-inline-start: 1.2rem; margin: 0.3rem 0; }

/* ---------- v0.5: SDG badges ---------- */
.sdg-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  margin-block: 0.6rem;
}
.sdg-tags.inline {
  display: inline-flex;
  margin-inline-start: 0.5rem;
  gap: 0.3rem;
  vertical-align: middle;
}
.sdg-tags-label {
  font-size: 0.85rem;
  color: var(--text-on-dark-muted, #8aa3ac);
  margin-inline-end: 0.3rem;
}
.sdg-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.25);
}
.sdg-badge.small { font-size: 0.72rem; padding: 0.1rem 0.45rem; }
.sdg-badge.primary {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.45);
  font-weight: 600;
}

/* ---------- v0.6: sibling translations + opt-in checkbox ---------- */
.siblings {
  margin-block: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-lg, 8px);
  border: 1px dashed var(--border-on-dark, rgba(255,255,255,0.15));
}
.siblings-label {
  font-size: 0.85rem;
  color: var(--text-on-dark-muted, #8aa3ac);
  display: block;
  margin-block-end: 0.5rem;
}
.siblings-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.sibling-card {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.7rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  color: inherit;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.15s ease;
}
.sibling-card:hover { background: rgba(255, 255, 255, 0.12); }
.sibling-card .lang-pill {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--accent, #1581a3);
  color: white;
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
}
.sibling-card .sibling-title {
  max-width: 28ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sibling-card .small { font-size: 0.72rem; }

/* opt-in checkbox layout on the submit form */
.field-checkbox { margin-block: 1rem; }
.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  cursor: pointer;
  font-weight: normal;
}
.checkbox-row input[type="checkbox"] {
  margin-block-start: 0.25rem;
  width: 1.05rem;
  height: 1.05rem;
  flex-shrink: 0;
}
.checkbox-row .muted { display: block; font-size: 0.85rem; margin-block-start: 0.2rem; }