/* ================================================
   SISTEMA JUICIOS EVALUATIVOS - SENA
   Design System & Global Styles
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* -------- CSS VARIABLES -------- */
:root {
  /* SENA Brand + Modern Palette */
  --sena-green: #39a900;
  --sena-green-dark: #2d8400;
  --sena-green-light: #52c41a;
  --sena-green-glow: rgba(57, 169, 0, 0.25);

  --accent-blue: #1890ff;
  --accent-orange: #fa8c16;
  --accent-red: #ff4d4f;
  --accent-purple: #722ed1;
  --accent-gold: #faad14;

  /* Dark theme */
  --bg-base: #0a0e1a;
  --bg-card: #111827;
  --bg-card-hover: #1a2332;
  --bg-sidebar: #0d1526;
  --bg-input: #1e2a3a;
  --bg-table-odd: #0f172a;
  --bg-table-even: #111827;

  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.15);

  --text-primary: #f0f6ff;
  --text-secondary: #8896b3;
  --text-muted: #4d5e7a;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.6);
  --shadow-green: 0 4px 24px rgba(57,169,0,0.3);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --sidebar-w: 260px;
  --header-h: 64px;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Premium Dashboard Styles (Adapted to Dark Theme) */
.premium-header {
  position: relative;
  z-index: 10;
}

.header-container {
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.header-icon-box {
  width: 54px;
  height: 54px;
  background: linear-gradient(135deg, var(--sena-green), var(--sena-green-dark));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-green);
}

.glass-dark {
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(4px);
}

.form-control-custom {
  background: transparent;
  border: none;
  color: white;
  padding: 8px 12px;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  min-width: 180px;
}

.form-control-custom option {
  background: var(--bg-card);
  color: white;
}

.btn-premium {
  padding: 10px 20px;
  border-radius: 12px;
  font-weight: 600;
  border: none;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-premium.primary {
  background: var(--sena-green);
  color: white;
  box-shadow: var(--shadow-green);
}

.btn-premium.secondary {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-premium:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-group-premium {
  display: flex;
  gap: 10px;
}

.premium-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.premium-card {
  background: linear-gradient(145deg, var(--bg-card), rgba(30, 41, 59, 0.5));
  border-radius: 24px;
  padding: 1.8rem;
  border: 1px solid var(--border);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 160px;
  position: relative;
  overflow: hidden;
}

.premium-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: rgba(57, 169, 0, 0.4);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
}

.premium-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 100px; height: 100px;
  background: radial-gradient(circle at top right, rgba(255,255,255,0.05), transparent);
  pointer-events: none;
}

.premium-card.primary { border-bottom: 4px solid var(--sena-green); }
.premium-card.blue { border-bottom: 4px solid var(--accent-blue); }
.premium-card.orange { border-bottom: 4px solid var(--accent-orange); }
.premium-card.red { border-bottom: 4px solid var(--accent-red); }
.premium-card.purple { border-bottom: 4px solid var(--accent-purple); }

.premium-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  background: rgba(255,255,255,0.03);
}

.premium-card.primary .icon { color: var(--sena-green-light); background: rgba(57,169,0,0.1); }
.premium-card.blue .icon { color: var(--accent-blue); background: rgba(24,144,255,0.1); }
.premium-card.orange .icon { color: var(--accent-orange); background: rgba(250,140,22,0.1); }
.premium-card.red .icon { color: var(--accent-red); background: rgba(255,77,79,0.1); }
.premium-card.purple .icon { color: var(--accent-purple); background: rgba(114,46,209,0.1); }

.premium-card .value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 2px;
  letter-spacing: -1px;
}

.badge-soft-success { background: rgba(57,169,0,0.15); color: var(--sena-green-light); border: 1px solid rgba(57,169,0,0.2); }
.badge-soft-blue { background: rgba(24,144,255,0.15); color: var(--accent-blue); border: 1px solid rgba(24,144,255,0.2); }
.badge-soft-orange { background: rgba(250,140,22,0.15); color: var(--accent-orange); border: 1px solid rgba(250,140,22,0.2); }
.badge-soft-red { background: rgba(255,77,79,0.15); color: var(--accent-red); border: 1px solid rgba(255,77,79,0.2); }
.badge-soft-purple { background: rgba(114,46,209,0.15); color: var(--accent-purple); border: 1px solid rgba(114,46,209,0.2); }

.premium-card .label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.8;
}

.chart-container {
  background: var(--bg-card);
  border-radius: 28px;
  padding: 2rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  height: 100%;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.recent-activity {
  list-style: none;
  padding: 0;
}

.activity-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.activity-item:last-child { border-bottom: none; }

.activity-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--bg-input);
  display: flex;
  align-items: center; justify-content: center;
  flex-shrink: 0;
}

.activity-content { flex: 1; min-width: 0; }
.activity-content h4 { font-size: 0.9rem; margin-bottom: 0.1rem; color: var(--text-primary); }
.activity-content p { font-size: 0.8rem; color: var(--text-secondary); }
.activity-time { font-size: 0.7rem; color: var(--text-muted); }

.alert-banner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  border: 1px solid transparent;
  animation: slideIn 0.4s ease-out;
}

.alert-banner.danger { background: rgba(255,77,79,0.1); border-color: rgba(255,77,79,0.2); color: var(--accent-red); }
.alert-banner.warning { background: rgba(250,140,22,0.1); border-color: rgba(250,140,22,0.2); color: var(--accent-orange); }

.semaforo-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 8px;
}
.semaforo-green { background: var(--sena-green); box-shadow: 0 0 8px var(--sena-green-glow); }
.semaforo-yellow { background: var(--accent-orange); box-shadow: 0 0 8px rgba(250,140,22,0.3); }
.semaforo-red { background: var(--accent-red); box-shadow: 0 0 8px rgba(255,77,79,0.3); }

/* -------- RESET -------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--sena-green-light); text-decoration: none; }
img, svg { display: block; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* -------- SCROLLBAR -------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--sena-green); }

/* -------- 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; bottom: 0;
  z-index: 100;
  transition: var(--transition);
}

.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--sena-green), var(--sena-green-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--shadow-green);
  flex-shrink: 0;
}

.logo-text { flex: 1; }
.logo-text h2 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.logo-text span {
  font-size: 11px;
  color: var(--sena-green-light);
  font-weight: 500;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.nav-group-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 12px 8px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
  margin-bottom: 2px;
  position: relative;
}
.nav-item:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}
.nav-item.active {
  background: linear-gradient(135deg, rgba(57,169,0,0.2), rgba(57,169,0,0.05));
  color: var(--sena-green-light);
  border: 1px solid rgba(57,169,0,0.25);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 3px;
  background: var(--sena-green);
  border-radius: 2px;
}
.nav-item .nav-icon { font-size: 16px; width: 20px; text-align: center; }
.nav-item .nav-badge {
  margin-left: auto;
  background: var(--sena-green);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}
.sidebar-footer strong { color: var(--sena-green-light); }

/* -------- MAIN CONTENT -------- */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0; /* Fix para desbordamiento flexbox */
  overflow: hidden;
}

/* -------- TOPBAR -------- */
.topbar {
  height: var(--header-h);
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  flex: 1;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}
.topbar-subtitle {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 400;
  font-family: 'Inter', sans-serif;
}

.topbar-actions { display: flex; align-items: center; gap: 8px; }

/* -------- PAGE CONTENT -------- */
.page-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  overflow-x: hidden; /* Evitar que el contenido empuje el ancho */
  width: 100%;
}

/* -------- STAT CARDS -------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: default;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-start, var(--sena-green)), var(--color-end, var(--sena-green-light)));
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}
.stat-card.green { --color-start: #39a900; --color-end: #52c41a; }
.stat-card.blue { --color-start: #1890ff; --color-end: #40a9ff; }
.stat-card.orange { --color-start: #fa8c16; --color-end: #ffa940; }
.stat-card.red { --color-start: #ff4d4f; --color-end: #ff7875; }
.stat-card.purple { --color-start: #722ed1; --color-end: #9254de; }

.stat-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: rgba(57,169,0,0.12);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}
.stat-card.blue .stat-icon { background: rgba(24,144,255,0.12); }
.stat-card.orange .stat-icon { background: rgba(250,140,22,0.12); }
.stat-card.red .stat-icon { background: rgba(255,77,79,0.12); }
.stat-card.purple .stat-icon { background: rgba(114,46,209,0.12); }

.stat-value {
  font-size: 32px;
  font-weight: 800;
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}
.stat-change {
  font-size: 11px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.stat-change.up { color: var(--sena-green-light); }
.stat-change.down { color: var(--accent-red); }

/* -------- CARDS -------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 100%; /* Garantizar que no se pase */
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.card-header h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', sans-serif;
  flex: 1;
}
.card-body { padding: 20px; }

/* -------- GRID LAYOUTS -------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }

/* -------- BUTTONS -------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  border: none;
  transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--sena-green), var(--sena-green-dark));
  color: white;
  box-shadow: 0 2px 12px var(--sena-green-glow);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--sena-green-light), var(--sena-green));
  box-shadow: 0 4px 20px var(--sena-green-glow);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn-danger {
  background: rgba(255,77,79,0.1);
  color: var(--accent-red);
  border: 1px solid rgba(255,77,79,0.25);
}
.btn-danger:hover { background: rgba(255,77,79,0.2); }
.btn-sm { padding: 5px 10px; font-size: 11px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }
.btn-icon { padding: 8px; }

/* -------- FORM ELEMENTS -------- */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 10px 14px;
  font-size: 13px;
  transition: var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--sena-green);
  box-shadow: 0 0 0 3px var(--sena-green-glow);
}
.form-control::placeholder { color: var(--text-muted); }
select.form-control option { background: var(--bg-card); color: var(--text-primary); }

/* -------- TABLE -------- */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}
.table th {
  background: var(--bg-sidebar);
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 11px;
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
.table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  vertical-align: middle;
}
.table tbody tr:nth-child(odd) { background: var(--bg-table-odd); }
.table tbody tr:nth-child(even) { background: var(--bg-table-even); }
.table tbody tr:hover { background: var(--bg-card-hover); }
.table tbody tr:last-child td { border-bottom: none; }

/* Ajustes Pro para Tablas Grandes */
.table-container {
  width: 100%;
  overflow-x: auto;
  position: relative;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-table-odd);
}

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 11.5px;
  table-layout: auto; /* Dejar que el navegador ayude, pero con límites */
}

.table th, .table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.5;
}

/* Control estricto de anchos para evitar desbordes */
.table th:nth-child(6), .table td:nth-child(6), /* Competencia */
.table th:nth-child(7), .table td:nth-child(7) { /* Resultado */
  min-width: 250px;
  max-width: 350px;
  white-space: normal;
  word-break: break-word;
}

.table th:nth-child(2), .table td:nth-child(2) { /* Aprendiz */
  min-width: 140px;
}

.table th {
  background: var(--bg-sidebar);
  color: var(--text-secondary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: 1px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.table tbody tr:hover { background: var(--bg-card-hover); }
.table td strong { color: var(--text-primary); display: block; margin-bottom: 2px; }

/* -------- BADGES -------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-success { background: rgba(57,169,0,0.15); color: var(--sena-green-light); border: 1px solid rgba(57,169,0,0.3); }
.badge-warning { background: rgba(250,140,22,0.15); color: var(--accent-gold); border: 1px solid rgba(250,140,22,0.3); }
.badge-danger { background: rgba(255,77,79,0.15); color: var(--accent-red); border: 1px solid rgba(255,77,79,0.3); }
.badge-info { background: rgba(24,144,255,0.15); color: var(--accent-blue); border: 1px solid rgba(24,144,255,0.3); }
.badge-purple { background: rgba(114,46,209,0.15); color: #b37feb; border: 1px solid rgba(114,46,209,0.3); }
.badge-gray { background: rgba(255,255,255,0.05); color: var(--text-secondary); border: 1px solid var(--border); }

/* -------- PROGRESS BAR -------- */
.progress-bar {
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--sena-green), var(--sena-green-light));
  border-radius: 3px;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.progress-fill.orange { background: linear-gradient(90deg, #fa8c16, #ffa940); }
.progress-fill.red { background: linear-gradient(90deg, #ff4d4f, #ff7875); }

/* -------- UPLOAD ZONE -------- */
.upload-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: rgba(255,255,255,0.01);
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--sena-green);
  background: rgba(57,169,0,0.04);
}
.upload-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.6; }
.upload-title { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.upload-sub { font-size: 13px; color: var(--text-secondary); }

/* -------- FILTER BAR -------- */
.filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
}
.filter-bar .form-group { margin-bottom: 0; min-width: 160px; flex: 1; }

/* -------- TABS -------- */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab {
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: -1px;
}
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--sena-green-light); border-bottom-color: var(--sena-green); }

/* -------- ALERT / TOAST -------- */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 16px;
}
.alert-success { background: rgba(57,169,0,0.1); border: 1px solid rgba(57,169,0,0.3); color: #95de64; }
.alert-error { background: rgba(255,77,79,0.1); border: 1px solid rgba(255,77,79,0.3); color: #ff7875; }
.alert-info { background: rgba(24,144,255,0.1); border: 1px solid rgba(24,144,255,0.3); color: #69b1ff; }
.alert-warning { background: rgba(250,173,20,0.1); border: 1px solid rgba(250,173,20,0.3); color: #ffc53d; }

#toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 280px;
  animation: slideInRight 0.3s ease;
}
.toast.success { border-color: rgba(57,169,0,0.4); color: #95de64; }
.toast.error { border-color: rgba(255,77,79,0.4); color: #ff7875; }
.toast.info { border-color: rgba(24,144,255,0.4); color: #69b1ff; }
@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

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

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  gap: 12px;
  color: var(--text-secondary);
}

/* -------- EMPTY STATE -------- */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-secondary);
}
.empty-state .empty-icon { font-size: 48px; opacity: 0.4; margin-bottom: 16px; }
.empty-state h3 { font-size: 16px; color: var(--text-primary); margin-bottom: 8px; }

/* -------- MODAL -------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 700px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform 0.25s ease;
}
.modal-overlay.open .modal { transform: scale(1); }
.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.modal-header h3 { flex: 1; font-size: 16px; font-weight: 700; font-family: 'Plus Jakarta Sans', sans-serif; }
.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* -------- CHART CONTAINERS -------- */
.chart-wrapper { position: relative; }
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}
.legend-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* -------- SEARCH -------- */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box .form-control { padding-left: 36px; }
.search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

/* -------- RESPONSIVE -------- */
@media (max-width: 1024px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .page-content { padding: 16px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}

/* -------- UTILITIES -------- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--sena-green-light); }
.text-danger { color: var(--accent-red); }
.text-warning { color: var(--accent-gold); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.w-full { width: 100%; }
.hidden { display: none !important; }
.p-0 { padding: 0 !important; }