@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Color Palette - Modern Blue Theme */
:root {
  --primary: #4F46E5;
  /* Indigo 600 */
  --primary-dark: #3730A3;
  /* Indigo 800 */
  --primary-light: #818CF8;
  /* Indigo 400 */

  --success: #10B981;
  /* Emerald 500 */
  --success-light: #34D399;

  --warning: #F59E0B;
  /* Amber 500 */
  --warning-light: #FBBF24;

  --danger: #EF4444;
  /* Red 500 */
  --danger-light: #F87171;

  /* Neutral Greys/Blacks */
  --bg-dark: #0F172A;
  /* Slate 900 */
  --bg-card: #1E293B;
  /* Slate 800 */
  --bg-card-hover: #334155;
  /* Slate 700 */

  --text-primary: #F8FAFC;
  /* Slate 50 */
  --text-secondary: #94A3B8;
  /* Slate 400 */
  --text-muted: #64748B;
  /* Slate 500 */

  --border: #334155;
  --border-light: #475569;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #4F46E5, #3730A3);
  --gradient-success: linear-gradient(135deg, #10B981, #059669);
  --gradient-warning: linear-gradient(135deg, #F59E0B, #D97706);
  --gradient-danger: linear-gradient(135deg, #EF4444, #B91C1C);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.3);
  /* Indigo Glow */

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Animated Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 50%, rgba(79, 70, 229, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(55, 48, 163, 0.1) 0%, transparent 50%);
  z-index: -1;
  animation: backgroundPulse 10s ease-in-out infinite;
}

@keyframes backgroundPulse {

  0%,
  100% {
    opacity: 0.5;
  }

  50% {
    opacity: 0.8;
  }
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* Card */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

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

/* Glass Card */
.card-glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  font-family: inherit;
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

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

.btn-success:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-warning {
  background: var(--gradient-warning);
  color: var(--bg-dark);
  box-shadow: var(--shadow-sm);
}

.btn-warning:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-danger {
  background: var(--gradient-danger);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.25rem;
  border-radius: var(--radius-lg);
}

.btn-xl {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: 1.5rem;
  border-radius: var(--radius-xl);
  font-weight: 700;
}

/* Form Elements */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all var(--transition-normal);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
}

.form-control-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1.25rem;
  border-radius: var(--radius-lg);
}

select.form-control {
  cursor: pointer;
}

/* Header */
.header {
  background: var(--gradient-primary);
  padding: var(--spacing-lg) 0;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-xl);
}

.header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin: 0;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Alerts */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  font-weight: 500;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.alert-success {
  background: rgba(34, 197, 94, 0.2);
  border: 1px solid var(--success);
  color: var(--success-light);
}

.alert-warning {
  background: rgba(251, 191, 36, 0.2);
  border: 1px solid var(--warning);
  color: var(--warning-light);
}

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

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

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

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

/* Pulse Animation */
@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Glow Animation */
@keyframes glow {

  0%,
  100% {
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.3);
  }

  50% {
    box-shadow: 0 0 40px rgba(96, 165, 250, 0.6);
  }
}

.glow {
  animation: glow 2s ease-in-out infinite;
}

/* Loading Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

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

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

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

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

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-md);
  }

  .header h1 {
    font-size: 1.75rem;
  }

  .btn-lg {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.1rem;
  }
}