:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --card-hover: #f1f5f9;
  --muted: #64748b;
  --text: #1e293b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --radius: 12px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header Styles */
header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid var(--border);
}

.brand-text h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.125rem;
}

.brand-text .sub {
  color: var(--muted);
  font-size: 0.875rem;
}

.header-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.date-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(241, 245, 249, 0.7);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  border: 1px solid var(--border);
  font-size: 0.875rem;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.5; }
  100% { opacity: 1; }
}

.nav-menu {
  display: flex;
  gap: 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-item:hover {
  background: var(--card-hover);
}

.nav-item.active {
  background: var(--accent);
  color: white;
}

.logout-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}

.logout-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

/* Main Content */
main {
  flex: 1;
  padding: 2rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.dashboard-header {
  margin-bottom: 2rem;
}

.dashboard-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.dashboard-header p {
  color: var(--muted);
  max-width: 600px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.dashboard-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.dashboard-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  border-color: var(--accent);
}

.card-header {
  padding: 1.25rem 1.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
}

.card-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.card-content {
  padding: 1rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-content p {
  color: var(--muted);
  margin-bottom: 1.5rem;
  flex: 1;
}

.card-action {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-stats {
  display: flex;
  gap: 1rem;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: 8px;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 0.875rem;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

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

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: var(--accent);
}

.note {
  background: rgba(241, 245, 249, 0.5);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.note i {
  margin-right: 0.5rem;
  color: var(--warning);
}

/* Login Modal */
#loginModal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(5px);
  /* Hidden by default to avoid flashing on reload when already authenticated */
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  width: 100%;
  max-width: 400px;
  overflow: hidden;
}

.modal-header {
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.modal-header img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.modal-header .title {
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-header .modal-sub {
  font-size: 0.875rem;
  color: var(--muted);
}

.modal-body {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(248, 250, 252, 0.5);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.875rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.password-wrap {
  position: relative;
  display: block;
}

.pass-toggle {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  transition: var(--transition);
}

.pass-toggle:hover {
  color: var(--text);
  background: rgba(0, 0, 0, 0.05);
}

.error-message {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

.btn-loading {
  position: relative;
  color: transparent !important;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive Styles */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .header-info {
    width: 100%;
    justify-content: space-between;
  }
  
  .nav-menu {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .card-action {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
  
  .card-stats {
    width: 100%;
    justify-content: space-between;
  }
}

/* Utilities */
.hidden {
  display: none !important;
}

.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger  { color: var(--danger) !important; }