/* Modern CSS Styling System for API Portal */
:root {
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Dark Mode Palette (Default) */
  --bg-color: #0b0f19;
  --bg-gradient: radial-gradient(circle at top right, #111827 0%, #0b0f19 100%);
  --panel-bg: rgba(17, 24, 39, 0.7);
  --panel-bg-hover: rgba(31, 41, 55, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --input-bg: rgba(0, 0, 0, 0.25);
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.15);
  
  --success: #10b981;
  --success-hover: #059669;
  --success-light: rgba(16, 185, 129, 0.15);
  
  --info: #06b6d4;
  --info-hover: #0891b2;
  --info-light: rgba(6, 182, 212, 0.15);
  
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.15);
  
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: rgba(239, 68, 68, 0.15);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --backdrop-blur: blur(12px);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Mode Override */
body.light {
  --bg-color: #f8fafc;
  --bg-gradient: linear-gradient(135deg, #f1f5f9 0%, #f8fafc 100%);
  --panel-bg: rgba(255, 255, 255, 0.85);
  --panel-bg-hover: rgba(255, 255, 255, 0.95);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(0, 0, 0, 0.15);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --input-bg: #ffffff;
  
  --primary: #4f46e5;
  --primary-hover: #3730a3;
  --primary-light: rgba(79, 70, 229, 0.08);
  
  --success: #059669;
  --success-hover: #047857;
  --success-light: rgba(5, 150, 105, 0.08);
  
  --info: #0891b2;
  --info-hover: #0d9488;
  --info-light: rgba(8, 145, 178, 0.08);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
}

/* Reset and Global Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: var(--font-family);
  background: var(--bg-color);
  background-image: var(--bg-gradient);
  color: var(--text-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  line-height: 1.5;
  overflow-x: hidden;
}

body {
  display: flex;
  flex-direction: column;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Typography Utility */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
}

/* Accessibility focus outline reset for programmatically focused non-interactive elements */
[tabindex="-1"]:focus {
  outline: none !important;
}

/* Layout Elements */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--panel-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  cursor: pointer;
}
.logo-icon {
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--info) 100%);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: var(--primary-light);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* Custom Switch for Light/Dark Mode */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  color: var(--text-primary);
  background: var(--border-color);
  transform: rotate(15deg);
}

/* User Profile Menu */
.user-menu {
  position: relative;
}
.profile-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.profile-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}
.avatar {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  object-fit: cover;
  background: var(--border-color);
}
.profile-name {
  font-size: 0.875rem;
  font-weight: 500;
  max-width: 120px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dropdown-menu {
  position: absolute;
  top: 110%;
  right: 0;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  width: 240px;
  box-shadow: var(--shadow-xl);
  display: none;
  flex-direction: column;
  padding: 0.5rem;
  z-index: 100;
  backdrop-filter: var(--backdrop-blur);
}
.dropdown-menu.show {
  display: flex;
  animation: slideIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.dropdown-header {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 0.25rem;
}
.dropdown-email {
  font-size: 0.75rem;
  color: var(--text-muted);
  word-break: break-all;
}
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  color: var(--text-secondary);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.dropdown-item:hover {
  background: var(--primary-light);
  color: var(--text-primary);
}
.dropdown-item.danger {
  color: var(--danger);
}
.dropdown-item.danger:hover {
  background: var(--danger-light);
  color: var(--danger);
}

/* Primary Button Design */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}
.btn-secondary:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover {
  background: var(--danger-hover);
}
.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

/* Main Layout Container */
main#main-content {
  flex: 1;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
}

/* Footer Section */
footer {
  background: var(--panel-bg);
  border-top: 1px solid var(--border-color);
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}
.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Authentication Modal & Styling */
dialog.auth-dialog {
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-primary);
  border-radius: 1rem;
  padding: 2rem;
  max-width: 450px;
  width: calc(100% - 2rem);
  box-shadow: var(--shadow-xl);
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  outline: none;
  backdrop-filter: var(--backdrop-blur);
}
dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
}
.auth-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}
.close-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
}
.close-btn:hover {
  color: var(--text-primary);
}
.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}
.auth-tab {
  flex: 1;
  text-align: center;
  padding: 0.75rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-weight: 600;
}
.auth-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.auth-form-group {
  margin-bottom: 1.25rem;
}
.auth-form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}
.input-control {
  width: 100%;
  background: var(--input-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.625rem 0.875rem;
  outline: none;
  transition: all var(--transition-fast);
}
.input-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}
.input-control::placeholder {
  color: var(--text-muted);
}
select.input-control option {
  background-color: var(--bg-color);
  color: var(--text-primary);
}
.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  margin: 1.5rem 0;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-color);
}
.auth-divider:not(:empty)::before {
  margin-right: .5em;
}
.auth-divider:not(:empty)::after {
  margin-left: .5em;
}

.social-auth-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 0.625rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition-fast);
}
.social-auth-btn:hover {
  background: var(--panel-bg-hover);
  border-color: var(--text-secondary);
}

/* Animations */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Notifications Toast system */
#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 100000;
}
#toast-container[popover] {
  top: auto;
  left: auto;
  display: none;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  overflow: visible;
}
#toast-container[popover]:popover-open {
  display: flex;
}
.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--panel-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  padding: 1rem 1.25rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  min-width: 300px;
  animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--text-primary);
}
.toast.success {
  border-left-color: var(--success);
}
.toast.error {
  border-left-color: var(--danger);
}
.toast.warning {
  border-left-color: var(--warning);
}

/* Glass panel */
.panel {
  background: var(--panel-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: all var(--transition-normal);
}
.panel:hover {
  border-color: var(--border-color-hover);
}

/* Developer Toolbar */
.dev-toolbar {
  position: fixed;
  bottom: 1rem;
  left: 1rem;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--border-color);
  color: #fff;
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 9999;
  box-shadow: var(--shadow-lg);
}
.dev-toolbar select {
  background: #000;
  border: 1px solid #444;
  padding: 0.125rem 0.25rem;
  border-radius: 0.25rem;
}
.dev-badge {
  background: #312e81;
  color: #a5b4fc;
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  font-weight: 700;
}
.dev-badge.prod {
  background: #065f46;
  color: #34d399;
}

/* ==========================================
   Sleek View Transitions & Loading Animations
   ========================================== */

/* 1. Define View Transition Name for Content Container */
main#main-content {
  view-transition-name: main-content;
}

/* 2. Style persistent elements to remain perfectly stable during transitions */
header {
  view-transition-name: portal-header;
}

footer {
  view-transition-name: portal-footer;
}

.dev-toolbar {
  view-transition-name: portal-dev-toolbar;
}

/* 3. Custom Premium Transition Animations (Fade + Slide) */
@keyframes view-fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes view-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes view-slide-to-top {
  from { transform: translateY(0); }
  to { transform: translateY(-16px); }
}

@keyframes view-slide-from-bottom {
  from { transform: translateY(16px); }
  to { transform: translateY(0); }
}

/* Old main content fading and sliding up slightly */
::view-transition-old(main-content) {
  animation: 150ms cubic-bezier(0.4, 0, 1, 1) both view-fade-out,
             150ms cubic-bezier(0.4, 0, 1, 1) both view-slide-to-top;
}

/* New main content fading and sliding up from bottom */
::view-transition-new(main-content) {
  animation: 250ms cubic-bezier(0, 0, 0.2, 1) 90ms both view-fade-in,
             250ms cubic-bezier(0, 0, 0.2, 1) 90ms both view-slide-from-bottom;
}

/* 4. Sleek Top Progress Bar when loading a view */
body.view-loading::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  z-index: 99999;
  background: linear-gradient(to right, var(--primary), var(--info), var(--primary));
  background-size: 200% auto;
  animation: loading-bar 1.5s linear infinite;
  transform-origin: left;
}

@keyframes loading-bar {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* 5. Accessibility: Respect User Reduced Motion settings */
@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*),
  ::view-transition-old(*),
  ::view-transition-new(*) {
    animation: none !important;
  }
}