:root {
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-blue: #38bdf8;
  --accent-indigo: #6366f1;
  --accent-purple: #a855f7;
  --accent-green: #22c55e;
  --accent-orange: #f97316;
  --accent-pink: #ec4899;
  --border-color: #334155;
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow:
    0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
  width: 260px;
  background: #090d16;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  position: fixed;
  height: 100vh;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
  padding: 0 8px;
}

.logo-icon {
  font-size: 28px;
  background: linear-gradient(
    135deg,
    var(--accent-indigo),
    var(--accent-purple)
  );
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

.brand-text h2 {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(90deg, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text span {
  font-size: 12px;
  color: var(--text-secondary);
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.nav-item:hover,
.nav-item.active {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.2), transparent);
  border-left: 3px solid var(--accent-indigo);
  color: var(--accent-blue);
}

.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.dot.online {
  width: 8px;
  height: 8px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
}

/* Main Area */
.main-content {
  margin-left: 260px;
  flex: 1;
  padding: 24px 36px;
  max-width: 1400px;
}

/* Header */
.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  gap: 20px;
}

.header-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  width: 480px;
}

.header-search input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  width: 100%;
  font-size: 14px;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.metric-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  padding: 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow);
}

.metric-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.metric-icon.blue {
  background: rgba(56, 189, 248, 0.15);
}
.metric-icon.green {
  background: rgba(34, 197, 94, 0.15);
}
.metric-icon.purple {
  background: rgba(168, 85, 247, 0.15);
}
.metric-icon.orange {
  background: rgba(249, 115, 22, 0.15);
}

.metric-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.metric-info h3 {
  font-size: 22px;
  font-weight: 700;
  margin-top: 4px;
}

/* AI Ingestion Banner */
.ai-ingestion-banner {
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.25),
    rgba(168, 85, 247, 0.25)
  );
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  margin-bottom: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.banner-badge {
  display: inline-block;
  background: var(--accent-indigo);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
}

.banner-content h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.banner-content p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 700px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--accent-indigo),
    var(--accent-purple)
  );
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-accent {
  background: #fff;
  color: var(--bg-dark);
}

.btn-accent:hover {
  background: #f1f5f9;
}

.btn-secondary {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Filters */
.filters-bar {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.filter-group select {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  outline: none;
}

/* Table */
.table-container {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.docentes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.docentes-table th {
  background: #0f172a;
  padding: 16px 20px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
}

.docentes-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}

.docentes-table tbody tr:hover {
  background: var(--bg-hover);
}

.client-id-badge {
  font-family: monospace;
  background: #0f172a;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--accent-blue);
}

.status-tag {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  display: inline-block;
}

.status-tag.delivered {
  background: rgba(34, 197, 94, 0.2);
  color: #4ade80;
}
.status-tag.pending {
  background: rgba(249, 115, 22, 0.2);
  color: #fb923c;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: all;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 560px;
  max-width: 90vw;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 18px;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

.modal-body {
  padding: 24px;
}

.modal-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-group textarea {
  width: 100%;
  background: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 12px;
  font-size: 14px;
  outline: none;
  resize: vertical;
}

.drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  background: #0f172a;
}

.drop-zone:hover {
  border-color: var(--accent-indigo);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background: #090d16;
}

.response-alert {
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-top: 14px;
}

.response-alert.success {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid var(--accent-green);
  color: #4ade80;
}