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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #f8f9fa;
}

nav {
  background: #1a365d;
  color: white;
  padding: 0.75rem 1.5rem;
}
.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  color: white;
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.nav-links a {
  color: white;
  text-decoration: none;
  margin-left: 1.5rem;
}
.nav-links a:hover { color: #bee3f8; }

main {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}
main:has(.admin) {
  max-width: none;
  margin: 2rem 0;
  padding: 0;
  padding-right: 1.5rem;
}

footer {
  text-align: center;
  padding: 2rem;
  color: #718096;
  font-size: 0.85rem;
}

h1 { margin-bottom: 0.5rem; }
h2 { margin-top: 1.5rem; margin-bottom: 0.5rem; }

.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}
.hero h1 { font-size: 2rem; }
.hero p { color: #4a5568; font-size: 1.1rem; margin-top: 0.5rem; }

/* Forms */
.signup-section { max-width: 500px; margin: 0 auto; }
form label {
  display: block;
  margin-bottom: 0.75rem;
  font-weight: 500;
}
form input[type="text"],
form input[type="email"],
form input[type="number"],
form textarea,
form select {
  display: block;
  width: 100%;
  padding: 0.5rem;
  margin-top: 0.25rem;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  font-size: 1rem;
}
form textarea { min-height: 80px; }
form small { display: block; color: #718096; font-weight: 400; margin-top: 0.15rem; }
.form-row { display: flex; gap: 1rem; }
.form-row label { flex: 1; }
fieldset { border: 1px solid #e2e8f0; border-radius: 4px; padding: 1rem; margin-bottom: 0.75rem; }
legend { font-weight: 600; }
.checkbox-label { display: flex !important; align-items: center; gap: 0.5rem; font-weight: 400 !important; }
.checkbox-label input { width: auto; }

button {
  background: #2b6cb0;
  color: white;
  border: none;
  padding: 0.6rem 1.5rem;
  border-radius: 4px;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  margin-top: 0.5rem;
}
button:hover { background: #2c5282; }

.error {
  background: #fed7d7;
  color: #c53030;
  padding: 0.75rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
}
th, td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #e2e8f0;
}
th { background: #edf2f7; font-weight: 600; }

/* Topic grid */
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; margin-top: 1rem; }
.topic-card { background: white; padding: 1.25rem; border-radius: 6px; border: 1px solid #e2e8f0; }
.topic-card h3 { margin-bottom: 0.25rem; }
.topic-stats { color: #718096; font-size: 0.85rem; margin-top: 0.5rem; }

/* Admin */
.stats-row { display: flex; gap: 1rem; margin: 1rem 0; }
.stat { background: white; padding: 1rem 1.5rem; border-radius: 6px; border: 1px solid #e2e8f0; font-weight: 600; }
.admin-layout {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.admin-sidebar {
  display: flex;
  flex-direction: column;
  min-width: 160px;
  border-right: 1px solid #e2e8f0;
  padding-right: 1.5rem;
}
.sidebar-link {
  padding: 0.5rem 0.75rem 0.5rem 0.5rem;
  text-decoration: none;
  color: white;
  font-weight: 500;
  border-left: 3px solid transparent;
  margin-bottom: 0.25rem;
  border-radius: 0 4px 4px 0;
}
.sidebar-link:hover { background: rgba(255, 255, 255, 0.1); }
.sidebar-link.active {
  color: white;
  border-left-color: white;
  background: rgba(255, 255, 255, 0.1);
}
.sidebar-group { margin-top: 0.75rem; }
.sidebar-group-label {
  display: block;
  padding: 0.5rem 0.5rem 0.2rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.4);
  font-weight: 600;
}
.sidebar-sub { padding-left: 1.25rem; font-size: 0.95rem; }
.llm-provider-card {
  border: 1px solid #cbd5e0;
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1rem;
  background: white;
}
.llm-provider-card.active { border-color: #2b6cb0; background: #ebf8ff; }
.llm-provider-header { margin-bottom: 0.75rem; }
.llm-provider-radio { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; }
.llm-provider-name { font-weight: 600; font-size: 1rem; }
.llm-provider-badge {
  font-size: 0.7rem;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  background: #e2e8f0;
  color: #4a5568;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.llm-provider-fields { display: flex; flex-direction: column; gap: 0.5rem; padding-left: 1.5rem; }
.admin-panel { flex: 1; }
.sub-tabs { display: flex; gap: 0; margin-bottom: 1rem; border-bottom: 1px solid #e2e8f0; }
.sub-tab {
  padding: 0.4rem 1rem;
  text-decoration: none;
  color: #4a5568;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.sub-tab:hover { color: #1a365d; }
.sub-tab.active { color: #1a365d; border-bottom-color: #1a365d; }
.admin-section h3 { margin-top: 1.25rem; margin-bottom: 0.5rem; }
.admin-actions { display: flex; gap: 0.5rem; margin-bottom: 1rem; align-items: center; }
.btn {
  display: inline-block;
  background: #2b6cb0;
  color: white;
  border: none;
  padding: 0.6rem 1.5rem;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  line-height: 1;
  margin-top: 0.5rem;
}
.btn:hover { background: #2c5282; }
.inline-form { display: inline; }
.admin-form { max-width: 500px; }
.sync-log {
  background: #1a1a2e;
  color: #0f0;
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  padding: 1rem;
  border-radius: 6px;
  max-height: 500px;
  overflow-y: auto;
  white-space: pre-wrap;
  line-height: 1.5;
}

/* Login */
.login-section { max-width: 360px; margin: 4rem auto; }
.login-form label { margin-bottom: 1rem; }

/* District lookup */
.district-section { margin-bottom: 0.75rem; }
.district-lookup {
  background: #edf2f7;
  border-radius: 6px;
  padding: 0.75rem;
  margin-top: 0.5rem;
}
.lookup-prompt { font-weight: 500; margin-bottom: 0.4rem; font-size: 0.9rem; }
.lookup-row { display: flex; gap: 0.5rem; }
.lookup-row input {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  font-size: 0.95rem;
}
.lookup-row button { margin-top: 0; white-space: nowrap; }
.privacy-note { display: block; color: #718096; font-size: 0.8rem; margin-top: 0.4rem; font-style: italic; }
.lookup-result {
  margin-top: 0.5rem;
  padding: 0.6rem;
  border-radius: 4px;
  font-size: 0.9rem;
}
.lookup-result.success { background: #c6f6d5; color: #22543d; }
.lookup-result.error { background: #fed7d7; color: #c53030; }
.lookup-result ul { margin: 0.3rem 0 0 1.2rem; font-size: 0.85rem; }

/* Letter */
.letter-body {
  background: white;
  padding: 1.5rem;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  white-space: pre-wrap;
  line-height: 1.7;
  margin: 0.5rem 0 1rem;
}