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

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --sidebar-bg: #0f172a;
  --sidebar-hover: #1e293b;
  --bg-main: #f8fafc;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  display: flex;
  min-height: 100vh;
  overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
  width: 260px;
  background-color: var(--sidebar-bg);
  color: #94a3b8;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.25rem 1rem;
  flex-shrink: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-bottom: 1px solid #1e293b;
  margin-bottom: 1.5rem;
}

.brand-icon {
  width: 34px;
  height: 34px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1rem;
}

.brand-title {
  color: #ffffff;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s ease-in-out;
}

.nav-link:hover {
  background-color: var(--sidebar-hover);
  color: #ffffff;
}

.nav-link.active {
  background-color: rgba(79, 70, 229, 0.15);
  color: #818cf8;
  font-weight: 600;
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: 0.15s;
}

.logout-btn:hover {
  background-color: var(--sidebar-hover);
  color: #f87171;
}

/* Layout & Main Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.header {
  height: 64px;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  flex-shrink: 0;
}

.header-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-main);
}

.header-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.content-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
}

/* Cards & Grid Layouts */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.kpi-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-main);
}

.kpi-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
}

/* Buttons */
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.15s;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

/* Modal Lightbox */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 9999;
}

.modal-overlay.active {
  display: flex;
}