/* ============================================================
   Atenea — SaaS de Inteligencia Electoral Predictiva
   Tema claro, neutro, profesional
   Paleta: slate + teal (sin colores partidistas)
   ============================================================ */

/* ─── Variables ─────────────────────────────────────────── */
:root {
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-sidebar: #ffffff;
  --bg-input: #f1f5f9;

  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;

  --border: #e2e8f0;
  --border-light: #f1f5f9;

  --accent: #0f766e;
  --accent-hover: #0d9488;
  --accent-light: #ccfbf1;
  --accent-text: #ffffff;

  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --info: #2563eb;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);

  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --sidebar-w: 260px;
}

/* ─── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg-body);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ─── Login ─────────────────────────────────────────────── */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}
.login-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--border);
}
.login-header { text-align: center; margin-bottom: 32px; }
.login-icon { font-size: 48px; line-height: 1; color: var(--accent); }
.login-header h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 12px 0 4px;
  letter-spacing: -0.025em;
}
.login-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 400;
}
.login-form { display: flex; flex-direction: column; gap: 20px; }
.login-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--danger);
  font-size: 14px;
  text-align: center;
}
.login-footer {
  text-align: center;
  margin-top: 24px;
  color: var(--text-muted);
  font-size: 12px;
}

/* ─── Forms ─────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.form-group input, .form-group select, .form-group textarea {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: var(--font);
  color: var(--text-primary);
  background: var(--bg-input);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15,118,110,0.12);
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font);
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}
.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-body);
  border-color: var(--text-muted);
}
.btn-danger {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}
.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }

/* Spinner */
.spinner { animation: spin 0.8s linear infinite; width: 18px; height: 18px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Layout ────────────────────────────────────────────── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ─── Sidebar ───────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
}
.sidebar-brand {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.sidebar-brand .brand-icon { font-size: 28px; color: var(--accent); }
.sidebar-brand .brand-text { font-size: 18px; font-weight: 800; color: var(--text-primary); letter-spacing: -0.025em; }
.sidebar-brand .brand-sub { font-size: 11px; color: var(--text-muted); font-weight: 400; }

.sidebar-user {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.sidebar-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}
.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.sidebar-user-role { font-size: 12px; color: var(--text-secondary); }

.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }
.sidebar-section { padding: 8px 20px 4px; font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.12s;
  cursor: pointer;
  border-left: 3px solid transparent;
}
.sidebar-item:hover { background: var(--bg-body); color: var(--text-primary); }
.sidebar-item.active {
  background: var(--accent-light);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}
.sidebar-item .icon { font-size: 18px; width: 22px; text-align: center; flex-shrink: 0; }

.sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border); }
.sidebar-footer .sidebar-item { padding: 8px 0; border-left: none; }
.sidebar-footer .sidebar-item:hover { background: none; color: var(--danger); }

/* ─── Main Content ──────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 32px;
  min-height: 100vh;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.page-header h1 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.025em;
}
.page-header p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

/* ─── KPIs ──────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}
.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s;
}
.kpi-card:hover { box-shadow: var(--shadow-md); }
.kpi-label { font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.kpi-value { font-size: 28px; font-weight: 800; color: var(--text-primary); letter-spacing: -0.025em; }
.kpi-trend { font-size: 13px; font-weight: 500; margin-top: 4px; }
.kpi-trend.up { color: var(--success); }
.kpi-trend.down { color: var(--danger); }
.kpi-trend.flat { color: var(--text-muted); }
.kpi-sub { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

/* ─── Cards ─────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-header h2, .card-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ─── Badges ────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.badge-accent { background: var(--accent-light); color: var(--accent); }
.badge-success { background: #dcfce7; color: #166534; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info { background: #dbeafe; color: #1e40af; }

/* ─── Tables ────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--border);
  background: var(--bg-body);
}
table tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
}
table tbody tr:hover { background: #f1f5f9; }

/* ─── Chat ──────────────────────────────────────────────── */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 500px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.chat-message {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  line-height: 1.6;
}
.chat-message.user {
  align-self: flex-end;
  background: var(--accent);
  color: white;
  border-bottom-right-radius: 4px;
}
.chat-message.atenea {
  align-self: flex-start;
  background: var(--bg-body);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}
.chat-input-area {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}
.chat-input-area input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--font);
  outline: none;
}
.chat-input-area input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15,118,110,0.12);
}
.chat-typing {
  color: var(--text-muted);
  font-size: 13px;
  padding: 4px 16px;
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 20px; }
  .kpi-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
  .chat-message { max-width: 95%; }
}