/* ============================================================================
   Vivander Visibility — shared styles
   Palette matches the audit deliverables: 1A3A5C / 1A6B3C / 8A2C2C / 8A6D1B
   ============================================================================ */

:root {
  --accent: #1A3A5C;
  --accent-light: #2A5A8C;
  --accent-dark: #0F2439;
  --green: #1A6B3C;
  --red: #8A2C2C;
  --amber: #8A6D1B;
  --muted: #6B6B63;
  --section-bg: #F8F7F4;
  --text: #1B1B18;
  --rule: #D4D4CC;
  --card: #FFFFFF;
  --chatgpt: #10A37F;
  --claude: #D97706;
  --perplexity: #3B82F6;
  --ai-overviews: #4285F4;
  --gemini: #8B5CF6;
  --copilot: #0078D4;
}

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

html, body { height: 100%; }

body {
  font-family: Georgia, 'Times New Roman', serif;
  background: var(--section-bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--accent); }
a:hover { color: var(--accent-light); }

/* ----- App header ----- */
.app-header {
  background: var(--accent);
  color: #fff;
  padding: 16px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 4px solid var(--accent-dark);
}
.app-header .brand {
  font-family: Arial, sans-serif;
  font-weight: 700;
  letter-spacing: 0.5px;
  font-size: 16px;
}
.app-header nav a {
  font-family: Arial, sans-serif;
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  margin-left: 20px;
}
.app-header nav a.active,
.app-header nav a:hover { color: #fff; }

/* ----- Auth pages (centered card) ----- */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.auth-card h1 {
  font-family: Arial, sans-serif;
  font-weight: 700;
  font-size: 22px;
  color: var(--accent);
  margin-bottom: 4px;
}
.auth-card .subtitle {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 24px;
}
.auth-card .alt {
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--muted);
}

/* ----- Forms ----- */
form .field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
form label {
  font-family: Arial, sans-serif;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  color: var(--accent);
}
form input[type="email"],
form input[type="password"],
form input[type="text"],
form input[type="url"],
form textarea,
form select {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: #fff;
}
form input:focus,
form textarea:focus,
form select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(26,58,92,0.12);
}

/* ----- Buttons ----- */
.btn {
  font-family: Arial, sans-serif;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: background 120ms ease;
}
.btn:hover { background: var(--accent-light); border-color: var(--accent-light); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn.secondary { background: #fff; color: var(--accent); }
.btn.secondary:hover { background: var(--section-bg); }
.btn.block { width: 100%; display: block; }

/* ----- Banner / alert ----- */
.alert {
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 13px;
  margin-bottom: 16px;
}
.alert.error { background: #F7E6E6; color: var(--red); border: 1px solid var(--red); }
.alert.success { background: #E6F3EB; color: var(--green); border: 1px solid var(--green); }
.alert.info { background: #E8EEF4; color: var(--accent); border: 1px solid var(--accent); }

/* ----- Dashboard layout ----- */
.page-body { padding: 32px 40px; }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 24px;
}
.page-header h1 {
  font-family: Arial, sans-serif;
  font-weight: 700;
  font-size: 24px;
  color: var(--accent);
}
.page-header .sub {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

/* ----- KPI grid ----- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}
.kpi-card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--accent);
  border-radius: 4px;
  padding: 20px 22px;
}
.kpi-card .label {
  font-family: Arial, sans-serif;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
  margin-bottom: 8px;
}
.kpi-card .value {
  font-family: Arial, sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
}
.kpi-card .ci {
  font-family: Arial, sans-serif;
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}
.kpi-card .delta {
  font-family: Arial, sans-serif;
  font-size: 13px;
  margin-top: 10px;
}
.kpi-card .delta.up { color: var(--green); }
.kpi-card .delta.down { color: var(--red); }
.kpi-card .delta.flat { color: var(--muted); }

/* "deterministic" vs "probabilistic" badges */
.badge {
  display: inline-block;
  font-family: Arial, sans-serif;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 8px;
  vertical-align: middle;
}
.badge.deterministic { background: #E6F3EB; color: var(--green); }
.badge.probabilistic { background: #F4EDDB; color: var(--amber); }

/* ----- Empty / loading states ----- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}
.empty-state h2 {
  font-family: Arial, sans-serif;
  font-size: 18px;
  color: var(--accent);
  margin-bottom: 8px;
}
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--rule);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ----- Responsive ----- */
@media (max-width: 720px) {
  .app-header { padding: 12px 20px; flex-direction: column; gap: 8px; align-items: flex-start; }
  .app-header nav a { margin: 0 12px 0 0; }
  .page-body { padding: 20px 16px; }
  .auth-card { padding: 28px 20px; }
}