:root {
  --color-primary: #312e81;
  --color-primary-hover: #4338ca;
  --color-primary-light: #eef2ff;
  --color-danger: #dc2626;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
}

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

body {
  font-family: var(--font-sans);
  background: var(--color-gray-50);
  color: var(--color-gray-900);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Loading */
.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 1rem;
  color: var(--color-gray-500);
}

.loading-spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Auth Shell */
.auth-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

.auth-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.auth-panel-form { background: white; }

.auth-panel-showcase {
  background: linear-gradient(135deg, #312e81 0%, #4338ca 50%, #6366f1 100%);
  color: white;
  display: none;
}

@media (min-width: 768px) {
  .auth-panel-showcase { display: flex; }
}

.auth-form-wrap { width: 100%; max-width: 400px; }

.auth-brand-main {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.brand-logo-auth { width: 40px; height: 40px; }

.auth-brand-text span {
  display: block;
  font-size: 0.75rem;
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.auth-brand-text strong {
  font-size: 1.125rem;
  font-weight: 700;
}

.auth-intro { margin-bottom: 2rem; }

.auth-intro h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.auth-intro p {
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.375rem;
  color: var(--color-gray-700);
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  transition: border-color 0.15s, box-shadow 0.15s;
  background: white;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(49,46,129,0.1);
}

.form-control.error {
  border-color: var(--color-danger);
}

.form-error {
  font-size: 0.75rem;
  color: var(--color-danger);
  margin-top: 0.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
}

.btn:disabled { opacity: 0.6; cursor: not-allowed; }

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn-outline {
  background: transparent;
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-gray-50);
}

.btn-block { width: 100%; }

.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.8125rem; }

/* Alert */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.alert-error {
  background: #fef2f2;
  color: var(--color-danger);
  border: 1px solid #fecaca;
}

.alert-success {
  background: #f0fdf4;
  color: var(--color-success);
  border: 1px solid #bbf7d0;
}

/* Dashboard */
.app-header {
  background: white;
  border-bottom: 1px solid var(--color-gray-200);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.app-header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.app-title { font-size: 1.125rem; font-weight: 700; }

.user-badge {
  font-size: 0.875rem;
  color: var(--color-gray-600);
}

.role-badge {
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 500;
}

.app-main {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.dashboard-welcome {
  background: white;
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.dashboard-welcome h2 {
  margin-bottom: 0.5rem;
}

.dashboard-welcome p {
  color: var(--color-gray-500);
}

.dashboard-info {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.info-card {
  background: white;
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-gray-200);
}

.info-card h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-500);
  margin-bottom: 0.5rem;
}

.info-card .value {
  font-size: 1.5rem;
  font-weight: 700;
}

.page-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; }

/* Pages (SPA views) */
.page { display: none; }
.page.active { display: block; }

/* Auth password row */
.auth-password-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.auth-forgot-link { font-size: 0.8125rem; }

/* Flash */
#flash-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1000;
  max-width: 400px;
}

.flash-message {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  animation: slideIn 0.2s ease-out;
  box-shadow: var(--shadow);
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}