/* CSS Variables */
:root {
  --color-primary: #2563eb;
  --color-primary-light: #3b82f6;
  --color-secondary: #60a5fa;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  --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;

  --color-white: #ffffff;
  --color-black: #000000;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --container-max-width: 1280px;
  --navbar-height: 64px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  text-decoration: underline;
}

/* Layout */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.main-content {
  flex: 1;
  padding-top: var(--navbar-height);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: 1000;
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--navbar-height);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-gray-900);
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
}

.navbar-brand:hover {
  text-decoration: none;
}

.navbar-logo {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.5rem 0.75rem;
  color: var(--color-gray-600);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

.nav-link:hover {
  color: var(--color-gray-900);
  background-color: var(--color-gray-100);
  text-decoration: none;
}

.nav-form {
  display: inline;
}

/* Footer */
.footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  padding: 1.5rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 640px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-copyright {
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-link {
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

.footer-link:hover {
  color: var(--color-gray-700);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--color-gray-50);
}

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

.btn-danger {
  background-color: var(--color-error);
  color: var(--color-white);
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

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

.btn-block {
  width: 100%;
}

/* Cards */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.card-body {
  padding: 1.25rem;
}

.card-footer {
  padding: 1rem 1.25rem;
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-200);
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-family: inherit;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-hint {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

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

/* Alerts */
.alert {
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

.alert-info {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--color-info);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-error {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Tables */
.table-container {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.875rem;
}

.table th {
  background-color: var(--color-gray-50);
  font-weight: 600;
  color: var(--color-gray-700);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.table tbody tr {
  border-bottom: 1px solid var(--color-gray-200);
}

.table tbody tr:hover {
  background-color: var(--color-gray-50);
}

/* Chips/Badges */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.chip-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.chip-error {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

.chip-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.chip-info {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--color-info);
}

/* Progress bar */
.progress {
  width: 100%;
  height: 12px;
  background-color: var(--color-gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-md);
  transition: width 0.3s ease;
}

.progress-bar-success {
  background: linear-gradient(90deg, var(--color-success), #34d399);
}

.progress-bar-warning {
  background: linear-gradient(90deg, var(--color-warning), #fbbf24);
}

.progress-bar-error {
  background: linear-gradient(90deg, var(--color-error), #f87171);
}

/* Page sections */
.page-header {
  margin-bottom: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 0.5rem;
}

.page-description {
  color: var(--color-gray-500);
}

/* Grid */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (min-width: 640px) {
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

/* Auth pages */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 2rem;
}

.auth-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.auth-logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

.auth-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gray-900);
}

.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-gray-200);
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

/* Stats cards */
.stats-grid {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: box-shadow 0.3s, transform 0.3s;
}

.stat-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.stat-icon-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
}

.stat-icon-success {
  background: linear-gradient(135deg, var(--color-success), #34d399);
  color: var(--color-white);
}

.stat-icon-info {
  background: linear-gradient(135deg, var(--color-info), var(--color-secondary));
  color: var(--color-white);
}

.stat-icon-warning {
  background: linear-gradient(135deg, var(--color-warning), #fbbf24);
  color: var(--color-white);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

/* Dialog/Modal */
.dialog-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 1rem;
}

.dialog {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

.dialog-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dialog-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.dialog-body {
  padding: 1.25rem;
}

.dialog-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--color-gray-200);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* Error page */
.error-page {
  text-align: center;
  padding: 4rem 1rem;
}

.error-page h1 {
  font-size: 6rem;
  font-weight: 700;
  color: var(--color-gray-200);
  margin-bottom: 1rem;
}

.error-page p {
  font-size: 1.25rem;
  color: var(--color-gray-500);
  margin-bottom: 2rem;
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-gray-500 { color: var(--color-gray-500); }
.text-gray-600 { color: var(--color-gray-600); }
.text-gray-700 { color: var(--color-gray-700); }
.text-gray-900 { color: var(--color-gray-900); }

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }

.p-2 { padding: 0.5rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.pt-4 { padding-top: 1rem; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.w-full { width: 100%; }

/* Code */
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875em;
  background-color: var(--color-gray-100);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
}

/* Schedule badge */
.schedule-badge {
  font-family: ui-monospace, monospace;
  font-size: 0.75rem;
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

/* Status dot */
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot-enabled {
  background: linear-gradient(135deg, var(--color-success), #34d399);
}

.status-dot-disabled {
  background-color: var(--color-gray-300);
}

/* Loading spinner */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-gray-300);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Page transition */
.page-content {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Prose / Article content (for terms/privacy pages) */
.prose h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.prose ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.prose li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.prose li::marker {
  color: var(--color-gray-400);
}

/* Space utilities */
.space-y-2 > * + * {
  margin-top: 0.5rem;
}

.space-y-3 > * + * {
  margin-top: 0.75rem;
}

/* Hover utilities */
.hover\:text-gray-700:hover {
  color: var(--color-gray-700);
}

.hover\:bg-gray-50:hover {
  background-color: var(--color-gray-50);
}

/* Group hover */
.group:hover .group-hover\:text-gray-600 {
  color: var(--color-gray-600);
}

/* Grid column span */
[style*="grid-column: span"] {
  display: block;
}

/* Link hover no underline */
.navbar-brand:hover,
.nav-link:hover {
  text-decoration: none;
}

/* Mobile Menu */
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-gray-600);
  transition: all 0.2s;
}

.mobile-menu-btn:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

.menu-icon-close {
  display: none;
}

.mobile-menu-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  max-width: 80vw;
  height: 100vh;
  background-color: var(--color-white);
  z-index: 1002;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-gray-200);
  height: var(--navbar-height);
}

.mobile-menu-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-gray-500);
  transition: all 0.2s;
}

.mobile-menu-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

.mobile-menu-close svg {
  width: 20px;
  height: 20px;
}

.mobile-menu-nav {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  color: var(--color-gray-700);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.2s;
  text-decoration: none;
  margin-bottom: 0.25rem;
}

.mobile-nav-link:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
  text-decoration: none;
}

.mobile-nav-link svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.mobile-nav-link-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  margin-top: 0.5rem;
}

.mobile-nav-link-primary:hover {
  background-color: var(--color-primary-light);
  color: var(--color-white);
}

.mobile-nav-link-danger {
  color: var(--color-error);
}

.mobile-nav-link-danger:hover {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

.mobile-menu-divider {
  height: 1px;
  background-color: var(--color-gray-200);
  margin: 0.75rem 0;
}

.mobile-nav-form {
  display: block;
}

.mobile-nav-form button {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
}

/* Mobile menu open state */
body.mobile-menu-open {
  overflow: hidden;
}

body.mobile-menu-open .mobile-menu-backdrop {
  opacity: 1;
  visibility: visible;
}

body.mobile-menu-open .mobile-menu {
  transform: translateX(0);
}

body.mobile-menu-open .menu-icon-open {
  display: none;
}

body.mobile-menu-open .menu-icon-close {
  display: block;
}

/* Responsive */
@media (min-width: 768px) {
  .mobile-menu-btn,
  .mobile-menu,
  .mobile-menu-backdrop {
    display: none !important;
  }
}

@media (max-width: 767px) {
  .navbar-nav-desktop {
    display: none !important;
  }
}