@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ========================================
   CSS Variables - Light Theme (Default)
   ======================================== */
:root {
  /* Brand Colors */
  --brand-primary: #0E2A47;
  --brand-secondary: #2B2F36;
  --brand-accent: #3A7AFE;
  --brand-accent-hover: #2563eb;
  --brand-accent-light: rgba(58, 122, 254, 0.1);
  --brand-accent-glow: rgba(58, 122, 254, 0.4);
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f0f2f5;
  --bg-card: #ffffff;
  --bg-input: #f8f9fa;
  --bg-input-focus: #ffffff;
  --bg-hover: #f5f5f5;
  --bg-sidebar: #0E2A47;
  
  /* Text Colors */
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-tertiary: #6b7280;
  --text-muted: #9ca3af;
  --text-inverse: #ffffff;
  
  /* Border Colors */
  --border-primary: #e5e7eb;
  --border-secondary: #d1d5db;
  --border-focus: var(--brand-accent);
  
  /* Status Colors */
  --success: #10b981;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --error: #ef4444;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
  
  /* Misc */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --transition: all 0.2s ease;
}


/* ========================================
   CSS Variables - Dark Theme
   ======================================== */
@media (prefers-color-scheme: dark) {
  :root {
    /* Background Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: #141414;
    --bg-input: #1a1a1a;
    --bg-input-focus: #111111;
    --bg-hover: #1f1f1f;
    --bg-sidebar: #0a0a0a;
    
    /* Text Colors */
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    --text-muted: #6b7280;
    --text-inverse: #111827;
    
    /* Border Colors */
    --border-primary: #2a2a2a;
    --border-secondary: #333333;
    --border-focus: var(--brand-accent);
    
    /* Status Colors - Dark variants */
    --success-bg: rgba(16, 185, 129, 0.15);
    --success-border: rgba(16, 185, 129, 0.3);
    --error-bg: rgba(239, 68, 68, 0.15);
    --error-border: rgba(239, 68, 68, 0.3);
    --warning-bg: rgba(245, 158, 11, 0.15);
    --warning-border: rgba(245, 158, 11, 0.3);
    
    /* Shadows - Dark variants */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  }
}

/* Manual theme override classes */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f0f2f5;
  --bg-card: #ffffff;
  --bg-input: #f8f9fa;
  --bg-input-focus: #ffffff;
  --bg-hover: #f5f5f5;
  --bg-sidebar: #0E2A47;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-tertiary: #6b7280;
  --text-muted: #9ca3af;
  --text-inverse: #ffffff;
  --border-primary: #e5e7eb;
  --border-secondary: #d1d5db;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: #141414;
  --bg-input: #1a1a1a;
  --bg-input-focus: #111111;
  --bg-hover: #1f1f1f;
  --bg-sidebar: #0a0a0a;
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-muted: #6b7280;
  --text-inverse: #111827;
  --border-primary: #2a2a2a;
  --border-secondary: #333333;
  --success-bg: rgba(16, 185, 129, 0.15);
  --success-border: rgba(16, 185, 129, 0.3);
  --error-bg: rgba(239, 68, 68, 0.15);
  --error-border: rgba(239, 68, 68, 0.3);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
}


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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  transition: background-color 0.3s ease, color 0.3s ease;
}

a {
  color: var(--brand-accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--brand-accent-hover);
}

/* ========================================
   Common Components
   ======================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--brand-accent);
  color: #fff;
  box-shadow: 0 4px 14px var(--brand-accent-glow);
}

.btn-primary:hover {
  background: var(--brand-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--brand-accent-glow);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-secondary);
}

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

.btn-ghost:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Form Inputs */
.form-input {
  width: 100%;
  height: 50px;
  padding: 0 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  background: var(--bg-input-focus);
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px var(--brand-accent-light);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}


/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* Alerts */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
}

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

.alert-error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error);
}

.alert-warning {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning);
}

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

.table th,
.table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-primary);
}

.table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table tr:hover td {
  background: var(--bg-hover);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge-primary {
  background: var(--brand-accent-light);
  color: var(--brand-accent);
}

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

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

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

/* Dropdown */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  z-index: 100;
}

.dropdown:hover .dropdown-menu,
.dropdown.active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  font-size: 14px;
  transition: var(--transition);
}

.dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.dropdown-divider {
  height: 1px;
  background: var(--border-primary);
  margin: 8px 0;
}


/* ========================================
   Layout Components
   ======================================== */

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-fluid {
  width: 100%;
  padding: 0 24px;
}

/* Well / Panel */
.well {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

/* Nav Pills */
.nav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin-bottom: 24px;
}

.nav-pills li a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}

.nav-pills li a:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-pills li.active a {
  background: var(--brand-accent);
  color: #fff;
}

/* ========================================
   Theme Toggle Button
   ======================================== */
.theme-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  z-index: 1000;
}

.theme-toggle:hover {
  transform: scale(1.1);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  font-size: 20px;
  transition: var(--transition);
}

.theme-toggle .icon-sun {
  color: #f59e0b;
  opacity: 1;
}

.theme-toggle .icon-moon {
  color: #6366f1;
  opacity: 0;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 0;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  opacity: 1;
}

@media (prefers-color-scheme: dark) {
  .theme-toggle .icon-sun {
    opacity: 0;
  }
  
  .theme-toggle .icon-moon {
    opacity: 1;
  }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--text-primary); }
.text-accent { color: var(--brand-accent); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.hidden { display: none !important; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }


/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .well {
    padding: 16px;
    border-radius: var(--radius-md);
  }
  
  .nav-pills {
    gap: 6px;
  }
  
  .nav-pills li a {
    padding: 8px 14px;
    font-size: 13px;
  }
  
  .table th,
  .table td {
    padding: 10px 12px;
    font-size: 13px;
  }
}

/* ========================================
   Scrollbar Styling
   ======================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ========================================
   Selection
   ======================================== */
::selection {
  background: var(--brand-accent);
  color: #fff;
}

/* ========================================
   Focus Visible
   ======================================== */
:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fadeIn { animation: fadeIn 0.3s ease; }
.animate-slideUp { animation: slideUp 0.4s ease; }
.animate-slideDown { animation: slideDown 0.4s ease; }