/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #1E3A5F;
  --primary-light: #2A5298;
  --accent: #4A90D9;
  --success: #27AE60;
  --danger: #E74C3C;
  --warning: #F39C12;
  --info: #3498DB;
  --purple: #8E44AD;
  --bg: #F0F4F8;
  --card: #FFFFFF;
  --text: #2C3E50;
  --text-muted: #7F8C8D;
  --border: #DDE3ED;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(30,58,95,0.10);
  --shadow-hover: 0 6px 24px rgba(30,58,95,0.18);
}
html { font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { text-decoration: none; color: inherit; }

/* ===== NAVBAR ===== */
.navbar {
  background: var(--primary);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  height: 60px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
}
.nav-brand i { color: #4A90D9; font-size: 1.3rem; }
.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}
.nav-links a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255,255,255,0.75);
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active {
  background: rgba(255,255,255,0.12);
  color: white;
}
.nav-toggle { display: none; background: none; border: none; color: white; font-size: 1.4rem; cursor: pointer; }

/* ===== MAIN ===== */
.main-content { padding: 1.75rem 2rem; max-width: 1440px; margin: 0 auto; }

/* ===== PAGE HEADER ===== */
.page-header { margin-bottom: 1.5rem; }
.page-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.page-header p { color: var(--text-muted); margin-top: 0.25rem; font-size: 0.9rem; }

/* ===== STATS ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow);
  border-left: 4px solid;
}
.stat-card.primary { border-color: var(--primary); }
.stat-card.success { border-color: var(--success); }
.stat-card.info { border-color: var(--info); }
.stat-card.danger { border-color: var(--danger); }
.stat-icon { font-size: 1.8rem; opacity: 0.7; }
.stat-card.primary .stat-icon { color: var(--primary); }
.stat-card.success .stat-icon { color: var(--success); }
.stat-card.info .stat-icon { color: var(--info); }
.stat-number { font-size: 1.8rem; font-weight: 700; display: block; line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.2rem; display: block; }

/* ===== ACTION CARDS ===== */
.action-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.action-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: var(--shadow);
  transition: all 0.25s;
  cursor: pointer;
  border: 2px solid transparent;
}
.action-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.action-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: white;
  margin-bottom: 0.25rem;
}
.bg-blue { background: var(--primary-light); }
.bg-green { background: var(--success); }
.bg-purple { background: var(--purple); }
.action-card h3 { font-size: 1rem; font-weight: 600; color: var(--text); }
.action-card p { font-size: 0.82rem; color: var(--text-muted); flex: 1; }
.action-btn {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.5rem;
}

/* ===== CARD ===== */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-6 { margin-top: 2rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-6 { margin-bottom: 2rem; }

/* ===== TABLE ===== */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.table th { background: var(--bg); padding: 0.75rem 1rem; text-align: left; font-weight: 600; color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
.table td { padding: 0.75rem 1rem; border-top: 1px solid var(--border); }
.table tbody tr:hover { background: #F8FAFF; }

/* ===== BADGES ===== */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-success { background: #EAFAF1; color: #1E8449; }
.badge-danger { background: #FDEDEC; color: #C0392B; }
.badge-info { background: #EBF5FB; color: #1A5276; }
.badge-primary { background: #EBF5FB; color: var(--primary); }
.badge-secondary { background: #F2F3F4; color: #717D7E; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.2rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-light); }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #219A52; }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); background: #F0F4FF; }
.btn-sm { padding: 0.35rem 0.8rem; font-size: 0.8rem; }
.btn-lg { padding: 0.8rem 1.8rem; font-size: 1rem; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-icon { background: none; border: none; cursor: pointer; padding: 0.3rem 0.5rem; border-radius: 6px; font-size: 0.9rem; transition: all 0.2s; }
.btn-icon:hover { background: var(--bg); }
.w-full { width: 100%; justify-content: center; margin-top: 1rem; }

/* ===== FORM ===== */
.form-container { max-width: 700px; margin: 0 auto; }
.form-section {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.form-section h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 0.75rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.65rem 0.9rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  background: white;
  color: var(--text);
  transition: border-color 0.2s;
  outline: none;
  font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--accent); }
.required { color: var(--danger); }
.form-actions { display: flex; gap: 1rem; justify-content: center; margin-top: 1rem; }

/* ===== GPS BOX ===== */
.gps-box {
  background: var(--bg);
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  text-align: center;
}
.gps-status, .gps-result { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; }
.gps-result .text-success { color: var(--success); }

/* ===== UPLOAD ===== */
.upload-container { max-width: 600px; margin: 0 auto; }
.dropzone {
  background: var(--card);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.dropzone.dragover { border-color: var(--accent); background: #EBF5FB; }
.dropzone h3 { font-size: 1rem; font-weight: 600; }
.file-preview {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.file-info { display: flex; align-items: center; gap: 1rem; }
.file-name { font-weight: 600; font-size: 0.9rem; }
.file-size { font-size: 0.8rem; }
.flex-1 { flex: 1; }
.progress-wrap { margin-top: 1rem; }
.progress-bar { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--success); width: 0%; border-radius: 3px; transition: width 0.3s; }

/* ===== FILE LIST ===== */
.file-list { padding: 0.5rem; }
.file-list-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  transition: background 0.15s;
}
.file-list-item:hover { background: var(--bg); }

/* ===== ADMIN TABS ===== */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border);
}
.tab-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border);
  background: var(--card);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s;
}
.tab-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.tab-btn:hover:not(.active) { border-color: var(--primary); color: var(--primary); }

/* Espaciado automático entre cards dentro de tabs */
.tab-content { display: flex; flex-direction: column; gap: 1.5rem; }

/* Separador visual entre secciones dentro de una card */
.section-divider {
  border: none;
  border-top: 2px solid var(--border);
  margin: 1.25rem 0;
}

.add-form { display: flex; gap: 0.75rem; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); }
.add-form input { flex: 1; padding: 0.55rem 0.9rem; border: 2px solid var(--border); border-radius: 8px; font-size: 0.9rem; outline: none; }
.add-form input:focus { border-color: var(--accent); }
.list-container { padding: 0.5rem; }
.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  transition: background 0.15s;
  font-size: 0.9rem;
}
.list-item:hover { background: var(--bg); }
.list-item.inactive { opacity: 0.5; }
.list-actions { display: flex; align-items: center; gap: 0.5rem; }

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 2.5rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}
.empty-state i { font-size: 2rem; opacity: 0.5; }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 9999;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  animation: slideUp 0.3s ease;
  max-width: 90vw;
  text-align: center;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--info); }
.toast.hidden { display: none; }
@keyframes slideUp {
  from { transform: translateX(-50%) translateY(20px); opacity: 0; }
  to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* ===== UTILITIES ===== */
.hidden { display: none !important; }
.text-sm { font-size: 0.82rem; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-green { color: var(--success); }
.mt-2 { margin-top: 0.5rem; }

/* ===== RESPONSIVE MOBILE ===== */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    padding: 1rem;
    gap: 0.25rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.75rem 1rem; }

  .main-content { padding: 1rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .action-cards { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .form-actions { flex-direction: column; }
  .page-header h1 { font-size: 1.3rem; }
  .tabs { gap: 0.35rem; }
  .tab-btn { font-size: 0.78rem; padding: 0.4rem 0.7rem; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-card { padding: 1rem; }
  .stat-number { font-size: 1.4rem; }
}

/* ===== SEARCH BOX ===== */
.search-box { position: relative; }
.search-box i { position: absolute; left: 0.85rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.85rem; }
.search-box input { width: 100%; padding: 0.55rem 1rem 0.55rem 2.4rem; border: 2px solid var(--border); border-radius: 8px; font-size: 0.875rem; outline: none; transition: border-color 0.2s; font-family: inherit; }
.search-box input:focus { border-color: var(--accent); }

/* ===== NAV USER ===== */
.nav-user { display: flex; align-items: center; gap: 0.5rem; margin-left: auto; }
.nav-username { color: rgba(255,255,255,0.8); font-size: 0.82rem; display: flex; align-items: center; gap: 0.35rem; }
.btn-logout { background: rgba(255,255,255,0.1); border: none; color: white; width: 34px; height: 34px; border-radius: 8px; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 1rem; transition: background 0.2s; }
.btn-logout:hover { background: rgba(231,76,60,0.7); }