/* ============================================
   M-VTU Modern Design System v2.0
   Clean, Consistent, Professional
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css');

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
  /* Color System */
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-bg-card: rgba(30, 41, 59, 0.8);
  --color-bg-hover: rgba(51, 65, 85, 0.5);
  
  --color-text-primary: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-text-inverse: #0f172a;
  
  --color-accent: #06b6d4;
  --color-accent-hover: #22d3ee;
  --color-accent-light: rgba(6, 182, 212, 0.1);
  --color-accent-glow: rgba(6, 182, 212, 0.3);
  
  --color-secondary: #6366f1;
  --color-secondary-hover: #818cf8;
  --color-secondary-light: rgba(99, 102, 241, 0.1);
  
  --color-success: #10b981;
  --color-success-light: rgba(16, 185, 129, 0.1);
  --color-error: #f43f5e;
  --color-error-light: rgba(244, 63, 94, 0.1);
  --color-warning: #f59e0b;
  --color-warning-light: rgba(245, 158, 11, 0.1);
  --color-info: #3b82f6;
  --color-info-light: rgba(59, 130, 246, 0.1);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
  --gradient-primary-hover: linear-gradient(135deg, #22d3ee 0%, #818cf8 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-card: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.9) 100%);
  
  /* Borders */
  --border-color: rgba(148, 163, 184, 0.1);
  --border-color-hover: rgba(148, 163, 184, 0.2);
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.3);
  --shadow-glow-lg: 0 0 40px rgba(6, 182, 212, 0.4);
  --shadow-secondary: var(--shadow-lg);
  
  /* Typography */
  --font-sans: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Legacy Aliases (for backward compatibility with existing pages) */
  --glass: var(--color-bg-card);
  --accent2: var(--color-secondary);
  --muted: var(--color-text-muted);
  --text: var(--color-text-primary);
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* 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;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-tooltip: 500;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

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

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

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-sm {
  max-width: 768px;
}

.container-md {
  max-width: 1024px;
}

.section {
  padding: var(--space-16) 0;
}

.section-sm {
  padding: var(--space-8) 0;
}

/* ============================================
   Background Effects
   ============================================ */
.bg-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-glow {
  position: relative;
}

.bg-glow::before {
  content: '';
  position: absolute;
  inset: -50%;
  background: radial-gradient(circle at center, var(--color-accent-glow) 0%, transparent 70%);
  opacity: 0.3;
  pointer-events: none;
  z-index: -1;
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

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

.card-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.card-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.card-body {
  flex: 1;
}

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

/* Card Variants */
.card-accent {
  border-color: rgba(6, 182, 212, 0.2);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.05) 0%, rgba(99, 102, 241, 0.05) 100%);
}

.card-success {
  border-color: rgba(16, 185, 129, 0.2);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(5, 150, 105, 0.05) 100%);
}

.card-warning {
  border-color: rgba(245, 158, 11, 0.2);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, rgba(217, 119, 6, 0.05) 100%);
}

.card-error {
  border-color: rgba(244, 63, 94, 0.2);
  background: linear-gradient(135deg, rgba(244, 63, 94, 0.05) 0%, rgba(225, 29, 72, 0.05) 100%);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.5;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md), 0 0 20px rgba(6, 182, 212, 0.2);
}

.btn-primary:hover:not(:disabled) {
  background: var(--gradient-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

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

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: none;
}

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

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

.btn-error {
  background: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%);
  color: white;
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-full {
  width: 100%;
}

.btn-icon {
  padding: var(--space-3);
  aspect-ratio: 1;
}

/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.form-label-required::after {
  content: ' *';
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

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

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--border-color-hover);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.form-error {
  font-size: var(--text-sm);
  color: var(--color-error);
  margin-top: var(--space-1);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ============================================
   Badges
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--border-radius-full);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

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

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

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

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

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

/* ============================================
   Alerts
   ============================================ */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--border-radius-md);
  border: 1px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

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

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

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

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

/* ============================================
   Tables
   ============================================ */
.table-container {
  overflow-x: auto;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.table th,
.table td {
  padding: var(--space-4) var(--space-5);
  text-align: left;
}

.table th {
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.table td {
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--border-color);
}

.table tbody tr {
  transition: background var(--transition-fast);
}

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

.table tbody tr:last-child td {
  border-bottom: none;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.navbar-brand {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

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

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.navbar-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

.navbar-link.active {
  color: var(--color-accent);
}

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

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--text-xl);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--border-radius-md);
  transition: background var(--transition-fast);
}

.navbar-toggle:hover {
  background: var(--color-bg-hover);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .navbar-toggle {
    display: block;
  }

  .navbar-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-primary);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6);
    gap: var(--space-2);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
  }

  .navbar-nav.active {
    transform: translateX(0);
  }

  .navbar-link {
    padding: var(--space-4);
    font-size: var(--text-base);
  }
}

/* ============================================
   Sidebar (Dashboard)
   ============================================ */
.sidebar {
  position: fixed;
  top: 64px;
  left: 0;
  bottom: 0;
  width: 260px;
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: var(--space-6);
  overflow-y: auto;
  z-index: var(--z-sticky);
  transition: transform var(--transition-base);
}

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

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.sidebar-link:hover,
.sidebar-link.active {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

.sidebar-link.active {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.sidebar-link i {
  width: 20px;
  text-align: center;
  font-size: var(--text-base);
}

.sidebar-section {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-color);
}

.sidebar-section-title {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  padding: 0 var(--space-4);
}

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0 !important;
  }
}

/* ============================================
   Main Content Area
   ============================================ */
.main-content {
  margin-left: 260px;
  min-height: 100vh;
  padding-top: 64px;
}

@media (max-width: 1024px) {
  .main-content {
    margin-left: 0;
  }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  padding: var(--space-20) 0 var(--space-16);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  opacity: 0.3;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
  opacity: 0.3;
  pointer-events: none;
}

/* SVG Background Pattern */
.hero-bg-pattern {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 320px;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  text-align: center;
  margin: 0 auto;
}

.hero-actions {
  justify-content: center;
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    padding: var(--space-16) 0 var(--space-12);
  }

  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-subtitle {
    font-size: var(--text-lg);
  }
}

/* ============================================
   Network Partners
   ============================================ */
.network-partners {
  margin-top: var(--space-16);
  text-align: center;
}

.network-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: nowrap;
}

.network-logo-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  backdrop-filter: blur(20px);
}

.network-logo-card:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.network-logo-card img {
  height: 28px;
  width: auto;
  object-fit: contain;
}

@media (max-width: 768px) {
  .network-logos {
    gap: var(--space-3);
    flex-wrap: wrap;
  }

  .network-logo-card {
    padding: var(--space-3) var(--space-4);
  }

  .network-logo-card img {
    height: 22px;
  }
}

/* ============================================
   Stats Grid
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
}

.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.stat-card:hover::before {
  opacity: 1;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.stat-icon-accent {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

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

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

.stat-icon-info {
  background: var(--color-info-light);
  color: var(--color-info);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.stat-change {
  font-size: var(--text-sm);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.stat-change-up {
  color: var(--color-success);
}

.stat-change-down {
  color: var(--color-error);
}

/* ============================================
   Quick Actions
   ============================================ */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.quick-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
}

.quick-action:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.quick-action-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  background: var(--gradient-primary);
  color: white;
}

.quick-action-title {
  font-weight: 600;
  color: var(--color-text-primary);
}

.quick-action-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
}

/* ============================================
   Auth Pages (Login/Register)
   ============================================ */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

.auth-page::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  position: relative;
  z-index: 1;
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-logo {
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius-lg);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-3xl);
  color: white;
  margin: 0 auto var(--space-4);
  box-shadow: var(--shadow-glow);
}

.auth-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.auth-subtitle {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-color);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============================================
   Tabs
   ============================================ */
.tabs {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-1);
  background: var(--color-bg-secondary);
  border-radius: var(--border-radius-md);
  width: fit-content;
  margin-bottom: var(--space-6);
}

.tab {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.tab.active {
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-xl);
  padding: var(--space-8);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-spring);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.modal-title {
  font-size: var(--text-xl);
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: var(--text-xl);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  line-height: 1;
}

.modal-close:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-tooltip);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-xl);
  min-width: 320px;
  max-width: 420px;
  pointer-events: auto;
  animation: toastSlideIn var(--transition-spring);
}

.toast.toast-exit {
  animation: toastSlideOut var(--transition-base) forwards;
}

.toast-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-weight: 600;
  font-size: var(--text-sm);
  margin-bottom: var(--space-1);
}

.toast-message {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.toast-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.toast-close:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-error); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-info { border-left: 3px solid var(--color-info); }

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

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

/* ============================================
   Loading States
   ============================================ */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-tertiary) 25%, var(--color-bg-hover) 50%, var(--color-bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s infinite;
  border-radius: var(--border-radius-md);
}

@keyframes skeletonShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

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

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

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

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

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

.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp var(--transition-base) ease-out;
}

.animate-fade-in-down {
  animation: fadeInDown var(--transition-base) ease-out;
}

.animate-scale-in {
  animation: scaleIn var(--transition-spring) ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft var(--transition-base) ease-out;
}

.animate-slide-in-right {
  animation: slideInRight var(--transition-base) ease-out;
}

/* Staggered animations */
.stagger-1 { animation-delay: 100ms; }
.stagger-2 { animation-delay: 200ms; }
.stagger-3 { animation-delay: 300ms; }
.stagger-4 { animation-delay: 400ms; }
.stagger-5 { animation-delay: 500ms; }

/* ============================================
   Utility Classes
   ============================================ */
/* Display */
.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-inline { display: inline; }
.d-inline-flex { display: inline-flex; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.flex-1 { flex: 1; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Grid */
.grid { display: grid; }
.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); }

/* Text */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }

/* Spacing */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3 { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }

/* Width/Height */
.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }
.inset-0 { inset: 0; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }

/* Border Radius */
.rounded-sm { border-radius: var(--border-radius-sm); }
.rounded-md { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-xl { border-radius: var(--border-radius-xl); }
.rounded-full { border-radius: var(--border-radius-full); }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

/* Transitions */
.transition { transition: all var(--transition-base); }
.transition-fast { transition: all var(--transition-fast); }
.transition-slow { transition: all var(--transition-slow); }

/* Hover */
.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1200px) {
  .container {
    max-width: 960px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }

  .section {
    padding: var(--space-10) 0;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .quick-actions {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-subtitle {
    font-size: var(--text-base);
  }
}

@media (max-width: 480px) {
  .quick-actions {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .tabs {
    width: 100%;
  }

  .tab {
    flex: 1;
    text-align: center;
  }
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--color-bg-tertiary);
  border-radius: var(--border-radius-full);
}

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

/* ============================================
   Selection
   ============================================ */
::selection {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

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

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .navbar,
  .sidebar,
  .fab,
  .chat-btn,
  .theme-toggle {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card {
    border: 1px solid #ddd;
    box-shadow: none;
  }
}

/* ============================================
   Amount Options (Buy Page)
   ============================================ */
.amount-option {
  background: var(--color-bg-hover);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--space-4) var(--space-2);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: var(--text-sm);
}

.amount-option:hover {
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--color-accent);
  transform: translateY(-1px);
}

.amount-option.selected {
  background: var(--gradient-primary);
  border-color: transparent;
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-glow);
}

/* ============================================
   Data Plan Options
   ============================================ */
.data-plan-category {
  margin-bottom: var(--space-5);
}

.category-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.category-plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-3);
}

.category-plan-option {
  background: var(--color-bg-hover);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--space-3) var(--space-2);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 70px;
  position: relative;
}

.category-plan-option:hover {
  border-color: rgba(6, 182, 212, 0.3);
  transform: translateY(-1px);
}

.category-plan-option.selected {
  background: var(--gradient-primary);
  border-color: transparent;
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-glow);
}

.category-plan-option .plan-name {
  font-size: 11px;
  margin-bottom: 4px;
  opacity: 0.8;
}

.category-plan-option .plan-amount {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 700;
}

.category-plan-option.selected .plan-amount {
  color: var(--color-text-inverse);
}

/* ============================================
   Preview Modal
   ============================================ */
.preview-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.preview-modal.active {
  opacity: 1;
  visibility: visible;
}

.preview-content {
  background: var(--color-bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-xl);
  padding: var(--space-8);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-spring);
}

.preview-modal.active .preview-content {
  transform: scale(1) translateY(0);
}

.preview-header {
  text-align: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-color);
}

.preview-title {
  color: var(--color-accent);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.preview-subtitle {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.preview-details {
  margin-bottom: var(--space-6);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}

.detail-value {
  color: var(--color-text-primary);
  font-weight: 600;
  text-align: right;
}

.detail-value.amount {
  color: var(--color-accent);
  font-size: var(--text-lg);
  font-weight: 700;
}

.discount-section {
  background: var(--color-accent-light);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--border-radius-md);
  padding: var(--space-4);
  margin: var(--space-4) 0;
}

.discount-title {
  color: var(--color-accent);
  font-weight: 600;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.discount-amount {
  color: var(--color-accent);
  font-size: var(--text-lg);
  font-weight: 700;
  text-align: center;
}

.original-amount {
  text-decoration: line-through;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.final-amount {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
  text-align: center;
  margin-top: var(--space-1);
}

.close-btn {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: var(--text-2xl);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  line-height: 1;
}

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

.btn-group {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  border-top-color: var(--color-accent);
  animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Notification Badge
   ============================================ */
.notification-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  background: var(--color-error);
  color: white;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-bg-primary);
}

/* ============================================
   Glass / Glassmorphism
   ============================================ */
.glass {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.about-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Chat Button
   ============================================ */
.chat-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  border: none;
  font-size: 24px;
  cursor: pointer;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.chat-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl), var(--shadow-glow-lg);
}

/* ============================================
   FAQ Components
   ============================================ */
.faq-item {
  width: 100%;
  text-align: left;
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-3);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-primary);
  font-size: var(--text-base);
  font-weight: 600;
}

.faq-item:hover {
  border-color: var(--border-color-hover);
  background: var(--color-bg-hover);
}

.faq-item[aria-expanded="true"] {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 400;
  line-height: 1.6;
}

.faq-item[aria-expanded="true"] .faq-answer {
  max-height: 500px;
  padding-top: var(--space-3);
}

/* ============================================
   Fund Wallet Page
   ============================================ */
.wallet-container {
  padding: 80px 16px 40px;
  max-width: 420px;
  margin: 0 auto;
  min-height: 100vh;
  box-sizing: border-box;
}

.compact-card {
  background: var(--glass);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.balance-display {
  background: linear-gradient(135deg, rgba(63, 255, 210, 0.08), rgba(159, 123, 255, 0.08));
  border: 1px solid rgba(63,255,210,0.2);
  text-align: center;
  padding: 16px;
}

.balance-amount {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  margin: 8px 0;
}

.page-title {
  font-size: 1.4rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 6px;
  color: var(--accent2);
}

.page-subtitle {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
  line-height: 1.4;
}

/* Payment Methods */
.payment-methods {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 16px;
}

.payment-option {
  position: relative;
}

.payment-option input[type="radio"] {
  display: none;
}

.payment-label {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.payment-label:hover {
  border-color: rgba(63,255,210,0.3);
  background: rgba(63,255,210,0.03);
}

.payment-option input[type="radio"]:checked + .payment-label {
  border-color: var(--accent);
  background: rgba(63,255,210,0.05);
  box-shadow: 0 0 16px rgba(63,255,210,0.1);
}

.payment-icon {
  font-size: 1.2rem;
  min-width: 24px;
}

.payment-content {
  flex: 1;
}

.payment-title {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.payment-subtitle {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.2;
}

/* Form Elements */
.form-section {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--text);
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
  box-sizing: border-box;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(63,255,210,0.1);
}

.form-help {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 4px;
}

.compact-select {
  position: relative;
}

.compact-select select {
  width: 100%;
  padding: 12px 40px 12px 14px;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  appearance: none;
  cursor: pointer;
  box-sizing: border-box;
}

.compact-select select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(63,255,210,0.1);
}

.select-arrow {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--muted);
  font-size: 0.8rem;
}

.compact-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  background: rgba(63,255,210,0.05);
  border: 1px solid rgba(63,255,210,0.15);
  border-radius: 8px;
}

.compact-checkbox input[type="checkbox"] {
  transform: scale(1.1);
  accent-color: var(--accent);
}

.checkbox-text {
  font-size: 0.45rem;
  line-height: 0.7;
}

.checkbox-text strong {
  display: block;
  margin-bottom: 2px;
}

.checkbox-text small {
  color: var(--muted);
}

/* Buttons */
.compact-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #ffffff, #ffffff);
  color: #000000;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin: 8px 0;
}

/* Quick Fund Button */
.quick-fund-btn {
  background: linear-gradient(135deg, #ffffff, #ffffff);
  color: rgb(0, 0, 0);
  box-shadow: 0 4px 16px rgb(12, 41, 236);
  font-size: 1.05rem;
  padding: 16px;
  margin: 0;
}

.quick-fund-btn:hover:not(:disabled) {
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
  transform: translateY(-1px);
}

.compact-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(63,255,210,0.3);
}

.compact-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Navigation Links */
.nav-links {
  text-align: center;
  margin: 16px 0;
  padding-top: 8px;
}

.nav-links a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  margin: 0 8px;
}

/* Info Text */
.info-compact {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 12px;
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--muted);
}

.info-compact p {
  margin-bottom: 6px;
}

.info-compact p:last-child {
  margin-bottom: 0;
}

/* Section Visibility */
.hidden-section {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.visible-section {
  opacity: 1;
  max-height: 200px;
}

/* ============================================
   Fund Wallet Header
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
}

.brand {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--text-xl);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--border-radius-md);
  transition: background var(--transition-fast);
  margin-left: auto;
}

.menu-toggle:hover {
  background: var(--color-bg-hover);
}

#mainNav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

#mainNav a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

#mainNav a:hover,
#mainNav a.active {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

#mainNav a.active {
  color: var(--color-accent);
}

/* ============================================
   Notification Dropdown
   ============================================ */
.notification-dropdown {
  display: none;
  position: absolute;
  top: 70px;
  right: 20px;
  width: 380px;
  max-height: 500px;
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-xl);
  z-index: 1001;
  overflow: hidden;
}

.notification-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5);
  border-bottom: 1px solid var(--border-color);
}

.notification-list {
  max-height: 350px;
  overflow-y: auto;
}

.notification-footer {
  padding: var(--space-4);
  text-align: center;
  border-top: 1px solid var(--border-color);
}

.notification-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.notification-item:hover {
  background: var(--color-bg-hover);
}

.notification-item.unread {
  background: var(--color-accent-light);
}

.notification-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
}

.notification-content {
  flex: 1;
  min-width: 0;
}

.notification-title {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
  font-size: var(--text-sm);
}

.notification-message {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.4;
  margin-bottom: var(--space-1);
}

.notification-time {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.notification-empty {
  padding: var(--space-10) var(--space-5);
  text-align: center;
  color: var(--color-text-muted);
}

.mark-all-read-btn {
  background: none;
  border: none;
  color: var(--color-secondary);
  font-size: var(--text-sm);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.mark-all-read-btn:hover {
  background: var(--color-bg-hover);
}

.view-all-notifications {
  color: var(--color-accent);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 600;
}

.view-all-notifications:hover {
  color: var(--color-accent-hover);
}

/* ============================================
   Buy Page Components
   ============================================ */
.amount-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.bulk-summary {
  display: none;
  background: var(--color-bg-hover);
  border-radius: var(--border-radius-md);
  padding: var(--space-5);
  margin: var(--space-4) 0;
}

/* ============================================
   About Page Components
   ============================================ */
.team {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.team-member {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
}

.team-member:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.team-member h4 {
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.stat {
  text-align: center;
  padding: var(--space-4);
}

.stat-number {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

/* ============================================
   Contact Page Components
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.contact-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(63,255,210,0.2);
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  transition: all 0.3s ease;
}

.contact-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.contact-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.contact-title {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 10px;
}

.contact-link {
  color: var(--text);
  text-decoration: none;
}

.contact-link:hover {
  color: var(--accent);
}

/* ============================================
   How It Works Page
   ============================================ */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}

.step {
  background: rgb(226, 217, 217);
  border-radius: 20px;
  padding: clamp(24px, 4vw, 32px);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-secondary);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.cta-section {
  text-align: center;
  margin: 60px 0 40px;
}

/* ============================================
   Message / Alert Styles
   ============================================ */
.message {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--border-radius-md);
  border: 1px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.message.success {
  background: var(--color-success-light);
  border-color: rgba(16, 185, 129, 0.2);
  color: var(--color-success);
}

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

.message.info {
  background: var(--color-info-light);
  border-color: rgba(59, 130, 246, 0.2);
  color: var(--color-info);
}

/* ============================================
   Aurora Background Effect
   ============================================ */
.aurora {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.aurora::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
  animation: auroraShift 20s ease-in-out infinite alternate;
}

@keyframes auroraShift {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-5%, -5%) rotate(5deg); }
}

/* ============================================
   FAQ Container
   ============================================ */
.faq {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Bottom Tab Bar (Dashboard)
   ============================================ */
.bottom-tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: var(--z-fixed);
  padding: 0 var(--space-2);
}

.bottom-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-xs);
  font-weight: 500;
  transition: all var(--transition-fast);
  flex: 1;
  max-width: 80px;
}

.bottom-tab i {
  font-size: var(--text-2xl);
  transition: all var(--transition-fast);
}

.bottom-tab:hover {
  color: var(--color-text-secondary);
}

.bottom-tab.active {
  color: var(--color-accent);
}

.bottom-tab.active i {
  transform: translateY(-2px);
}

.bottom-tab-logout {
  color: var(--color-error);
}

.bottom-tab-logout:hover {
  color: var(--color-error);
  opacity: 0.8;
}

.bottom-tab span {
  display: none;
}

@media (min-width: 480px) {
  .bottom-tab span {
    display: block;
  }

  .bottom-tab i {
    font-size: var(--text-xl);
  }
}

@media (min-width: 1025px) {
  .bottom-tab-bar {
    display: none;
  }

  .main-content {
    padding-bottom: var(--space-8);
  }
}

@media (max-width: 1024px) {
  .main-content {
    padding-bottom: calc(var(--space-8) + 64px);
  }
}