/* Modern Admin UI - Sleek, Compact SaaS Design System (Vercel & Linear Inspired) */

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

:root {
  /* Colors - Light Theme */
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-primary-light: #e0e7ff;
  --color-primary-glow: rgba(79, 70, 229, 0.2);
  
  --color-secondary: #64748b;
  --color-secondary-hover: #475569;
  
  --color-success: #10b981;
  --color-success-hover: #059669;
  --color-success-light: #d1fae5;
  
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  
  --color-error: #f43f5e;
  --color-error-hover: #e11d48;
  --color-error-light: #ffe4e6;
  
  --color-info: #06b6d4;
  --color-info-light: #cffafe;
  
  /* Background & Surface Colors */
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-surface-glass: rgba(255, 255, 255, 0.85);
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  
  /* Text Colors */
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-text-subtle: #94a3b8;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  
  /* Typography */
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 0.9375rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Shadows & Radius */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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, 0.08);
  
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

/* Dark Theme - Sleek Deep Charcoal (Linear/Vercel Style) */
[data-theme="dark"] {
  --color-bg: #0b0f19;
  --color-surface: #111827;
  --color-surface-hover: #1f2937;
  --color-surface-glass: rgba(17, 24, 39, 0.85);
  --color-border: #1e293b;
  --color-border-hover: #334155;
  
  --color-text: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-text-subtle: #64748b;
  
  --color-primary: #6366f1;
  --color-primary-hover: #818cf8;
  --color-primary-light: rgba(99, 102, 241, 0.12);
  --color-primary-glow: rgba(99, 102, 241, 0.25);
  
  --color-success-light: rgba(16, 185, 129, 0.12);
  --color-warning-light: rgba(245, 158, 11, 0.12);
  --color-error-light: rgba(244, 63, 94, 0.12);
  --color-info-light: rgba(6, 182, 212, 0.12);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.4);
}

/* Reset and Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* Strict SVG Sizing Guarantee */
svg {
  max-width: 100%;
  max-height: 100%;
  flex-shrink: 0;
}

/* Layout */
.layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar - Compact 240px */
.sidebar {
  width: 240px;
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-4);
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.sidebar.collapsed {
  transform: translateX(-100%);
}

.sidebar-header {
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-2);
}

.sidebar-brand-icon {
  width: 32px !important;
  height: 32px !important;
  min-width: 32px !important;
  min-height: 32px !important;
  max-width: 32px !important;
  max-height: 32px !important;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, #818cf8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.sidebar-brand-icon svg {
  width: 18px !important;
  height: 18px !important;
}

.sidebar-title {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin: 0;
  line-height: 1.2;
}

.sidebar-subtitle {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin: 2px 0 0 0;
}

.nav-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.5rem 0.75rem;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: var(--font-weight-medium);
  font-size: 0.8125rem;
  height: 36px;
}

.nav-link:hover {
  background-color: var(--color-surface-hover);
  color: var(--color-text);
}

.nav-link.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.nav-link svg {
  width: 18px !important;
  height: 18px !important;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: 240px;
  min-width: 0;
  transition: margin-left var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.main-content.expanded {
  margin-left: 0;
}

/* Topbar Header - Fixed 56px */
.topbar {
  height: 56px;
  background-color: var(--color-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Search Form */
.search-form {
  position: relative;
  width: 280px;
}

.search-input {
  width: 100%;
  height: 34px;
  padding: 0 40px 0 34px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 0.8125rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-surface);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
  width: 15px !important;
  height: 15px !important;
}

.search-shortcut {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--color-text-subtle);
  background-color: var(--color-surface-hover);
  padding: 2px 5px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  pointer-events: none;
}

/* Icon Buttons */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background-color: var(--color-surface-hover);
  color: var(--color-text);
  border-color: var(--color-border-hover);
}

.icon-btn svg {
  width: 16px !important;
  height: 16px !important;
}

/* Profile Menu */
.profile-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 3px 8px 3px 4px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background-color: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.profile-trigger:hover {
  background-color: var(--color-surface-hover);
}

.profile-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, #a855f7 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
}

/* Dropdown Menu Panel */
.menu-panel {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 180px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 4px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all var(--transition-fast);
}

.menu-panel.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: none;
  border-radius: var(--radius-md);
  background-color: transparent;
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

.menu-item:hover {
  background-color: var(--color-surface-hover);
}

/* Main Content Padding */
.panel-content {
  padding: var(--space-6);
  flex: 1;
}

/* Compact Welcome Banner */
.welcome-banner {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.15) 0%, rgba(99, 102, 241, 0.05) 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-6);
  margin-bottom: var(--space-6);
}

.welcome-title {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  margin: 0 0 2px 0;
  color: var(--color-text);
}

.welcome-subtitle {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Stat Cards Grid - Compact & Proportionate */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stat-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-1px);
}

.stat-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.stat-card-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.stat-card-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.stat-card-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.stat-card-sub {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  margin-top: 4px;
}

/* Panels */
.panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.panel-title {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.panel-title svg {
  width: 18px !important;
  height: 18px !important;
}

.panel-content {
  padding: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.4375rem 0.875rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  height: 34px;
}

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

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

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

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

.btn-error {
  background-color: rgba(244, 63, 94, 0.1);
  color: var(--color-error);
  border-color: rgba(244, 63, 94, 0.2);
}

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

.btn-sm {
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  height: 28px;
}

/* Forms & Inputs */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.form-group {
  margin-bottom: var(--space-3);
}

.form-label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.form-input, select.form-input {
  width: 100%;
  height: 36px;
  padding: 0 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 0.8125rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-input:focus, select.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
  background-color: var(--color-surface);
}

/* Interactive Captcha Playground Card Layout */
.playground-container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-6);
}

@media (max-width: 850px) {
  .playground-container {
    grid-template-columns: 1fr;
  }
}

.dropzone-box {
  border: 1px dashed var(--color-border-hover);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
  background-color: var(--color-bg);
  cursor: pointer;
  transition: all var(--transition-fast);
  height: 110px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.dropzone-box:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.dropzone-preview {
  max-width: 80px;
  max-height: 80px;
  border-radius: var(--radius-md);
  object-fit: contain;
}

.result-gauge-box {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

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

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.table th {
  background-color: var(--color-surface-hover);
  color: var(--color-text-muted);
  font-weight: 700;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: left;
  padding: 0.625rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.table td {
  padding: 0.625rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}

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

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1;
}

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

.badge-error {
  background-color: var(--color-error-light);
  color: var(--color-error);
}

.badge-warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

.code-font {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background-color: var(--color-bg);
  padding: 2px 5px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

/* Toast Notifications */
#toastContainer {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 0.625rem 1rem;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transform: translateY(10px);
  opacity: 0;
  transition: all var(--transition-fast);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}