:root {
  --bg-dark: #0b0f19;
  --bg-card: rgba(18, 24, 38, 0.85);
  --bg-card-hover: rgba(28, 36, 56, 0.95);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.2);
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.2);
  --edu-badge: #38bdf8;
  --legacy-badge: #fbbf24;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: rgba(13, 17, 28, 0.95);
  border-right: 1px solid var(--border-color);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

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

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #6366f1, #3b82f6);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 0 16px var(--primary-glow);
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #fff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text span {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  transform: translateX(3px);
}

.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 14px var(--primary-glow);
}

.nav-icon {
  font-size: 18px;
}

.nav-badge {
  margin-left: auto;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 12px;
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  font-weight: 600;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Main Content Area */
.main-content {
  margin-left: 260px;
  flex: 1;
  padding: 32px 40px;
  min-height: 100vh;
}

/* Header */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.page-title h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.page-title p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 20px;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.kpi-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
}

.kpi-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 8px;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -1px;
}

.kpi-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Progress Bars */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
  margin: 10px 0 6px 0;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s ease;
}

.progress-edu {
  background: linear-gradient(90deg, #38bdf8, #0ea5e9);
}

.progress-legacy {
  background: linear-gradient(90deg, #fbbf24, #f59e0b);
}

.progress-danger {
  background: linear-gradient(90deg, #ef4444, #dc2626);
}

/* Tenant Cards Grid */
.tenant-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.tenant-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  backdrop-filter: blur(10px);
  transition: all 0.2s ease;
}

.tenant-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-2px);
}

.tenant-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.tenant-name {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.tenant-domain {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Badges */
.badge {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-edu {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.badge-legacy {
  background: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.badge-active {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-urgent {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Data Tables */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.data-table th {
  background: rgba(255, 255, 255, 0.03);
  padding: 14px 18px;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.6px;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-muted);
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
  color: #fff;
}

/* Action Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 12px var(--primary-glow);
}

.btn-whatsapp {
  background: #25d366;
  color: #0b0f19;
  font-weight: 700;
}

.btn-whatsapp:hover {
  background: #1ebe57;
  box-shadow: 0 0 14px rgba(37, 211, 102, 0.4);
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}