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

:root {
  --bg: #0a0e27;
  --fg: #f8fafc;
  --card-bg: rgba(255, 255, 255, 0.1);
  --card-hover: rgba(255, 255, 255, 0.15);
  --border: rgba(255, 255, 255, 0.12);
  --border-hover: rgba(255, 255, 255, 0.25);
  --muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-shadow: rgba(59, 130, 246, 0.3);
  --accent-glow: rgba(59, 130, 246, 0.2);
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
  --info: #06b6d4;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3), 0 8px 32px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 32px rgba(59, 130, 246, 0.2);
  --input-bg: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --gradient-start: #1e3a8a;
  --gradient-end: #3730a3;
  --gradient-bg: linear-gradient(135deg, #0a0e27 0%, #1e293b 50%, #0f172a 100%);
  --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  --glow-purple: drop-shadow(0 0 20px rgba(59, 130, 246, 0.4));
  --blur-backdrop: blur(20px) saturate(180%);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.85rem);
  --font-size-sm: clamp(0.875rem, 0.84rem + 0.2vw, 0.95rem);
  --font-size-md: clamp(1rem, 0.96rem + 0.2vw, 1.1rem);
  --font-size-lg: clamp(1.125rem, 1.05rem + 0.3vw, 1.3rem);
  --font-size-xl: clamp(1.5rem, 1.35rem + 0.6vw, 2rem);
  --font-size-2xl: clamp(1.875rem, 1.6rem + 0.8vw, 2.5rem);
  --line-height-base: 1.65;
  --line-height-heading: 1.2;
  --letter-spacing-heading: -0.01em;
  --letter-spacing-body: 0em;
}

[data-theme="dark"] {
  --bg: #0a0e27;
  --fg: #f8fafc;
  --card-bg: rgba(255, 255, 255, 0.1);
  --card-hover: rgba(255, 255, 255, 0.15);
  --border: rgba(255, 255, 255, 0.12);
  --border-hover: rgba(255, 255, 255, 0.25);
  --muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-shadow: rgba(59, 130, 246, 0.3);
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
  --info: #06b6d4;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5), 0 8px 32px rgba(0, 0, 0, 0.3);
  --input-bg: rgba(255, 255, 255, 0.08);
  --gradient-bg: linear-gradient(135deg, #0a0e27 0%, #1e293b 50%, #0f172a 100%);
  --letter-spacing-heading: -0.005em;
}

/* Base styles */
body { 
  background: var(--gradient-bg);
  color: var(--fg); 
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  line-height: var(--line-height-base);
  letter-spacing: var(--letter-spacing-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(29, 78, 216, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--fg);
  margin-bottom: 0.5em;
  font-weight: 600;
  line-height: var(--line-height-heading);
  letter-spacing: var(--letter-spacing-heading);
}

h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: clamp(1.25rem, 1.15rem + 0.3vw, 1.6rem); }
h4 { font-size: clamp(1.1rem, 1.05rem + 0.2vw, 1.35rem); }
h5 { font-size: clamp(1rem, 0.98rem + 0.1vw, 1.1rem); }
h6 { font-size: var(--font-size-sm); text-transform: uppercase; letter-spacing: 0.08em; }

p {
  margin-bottom: 1rem;
  color: inherit;
}

.lead {
  font-size: var(--font-size-lg);
  color: var(--muted);
  font-weight: 400;
}

small, .text-small { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease, box-shadow 0.2s ease;
}

a:hover, a:focus {
  color: var(--accent-hover);
  text-decoration: none;
  box-shadow: inset 0 -0.2rem 0 rgba(99, 102, 241, 0.2);
}

blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--muted);
  background: rgba(99, 102, 241, 0.08);
  border-radius: calc(var(--radius) * 0.75);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.eyebrow {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--accent);
  font-weight: 600;
  display: inline-block;
  margin-bottom: 0.5rem;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
  opacity: 0.6;
}

code, pre {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  background: rgba(15, 23, 42, 0.04);
  color: var(--accent);
  border-radius: calc(var(--radius) * 0.5);
}

code {
  padding: 0.15rem 0.4rem;
  font-size: 0.9em;
}

pre {
  padding: 1rem;
  overflow: auto;
  border: 1px solid rgba(99, 102, 241, 0.1);
}

/* Enhanced card styles */
.card-soft { 
  background: var(--card-bg);
  backdrop-filter: var(--blur-backdrop);
  -webkit-backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--border); 
  border-radius: var(--radius); 
  box-shadow: var(--shadow);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.card-soft::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
}

.card-soft:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-hover);
  background: var(--card-hover);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
}

.glow-card {
  background: var(--card-bg);
  backdrop-filter: var(--blur-backdrop);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glow);
  position: relative;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glow-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 48px rgba(139, 92, 246, 0.25), var(--shadow-lg);
}

/* Text utilities */
.text-muted { color: var(--muted) !important; }
.text-accent { color: var(--accent) !important; }

/* Enhanced form controls */
.form-control, .form-select {
  background: var(--input-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 0.75);
  color: var(--fg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 1rem;
  padding: 0.85rem 1.2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.form-control:focus, .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow), 0 8px 24px rgba(0, 0, 0, 0.15);
  background: var(--card-bg);
  transform: translateY(-1px);
}

.form-control::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

label {
  font-weight: 600;
  color: var(--fg);
  letter-spacing: 0.01em;
  margin-bottom: 0.4rem;
}

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

/* Enhanced buttons */
.btn {
  border-radius: calc(var(--radius) * 0.75);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.75rem 1.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(139, 92, 246, 0.4);
  filter: var(--glow-purple);
}

.btn-outline-primary {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--accent);
  backdrop-filter: blur(10px);
}

.btn-outline-primary:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.2);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Enhanced alerts */
.alert {
  border: none;
  border-radius: var(--radius);
  border-left: 4px solid;
}

.alert-success { 
  background: rgba(16, 185, 129, 0.1); 
  color: var(--success); 
  border-left-color: var(--success);
}

.alert-danger { 
  background: rgba(239, 68, 68, 0.1); 
  color: var(--danger); 
  border-left-color: var(--danger);
}

.alert-warning { 
  background: rgba(245, 158, 11, 0.1); 
  color: var(--warning); 
  border-left-color: var(--warning);
}

.alert-info { 
  background: rgba(59, 130, 246, 0.1); 
  color: var(--info); 
  border-left-color: var(--info);
}

/* Theme toggle */
.theme-toggle-btn { 
  position: fixed; 
  right: 24px; 
  bottom: 24px; 
  z-index: 1000;
  border-radius: 50%;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glow);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--accent);
  font-size: 1.5rem;
}

.theme-toggle-btn:hover {
  transform: scale(1.1) rotate(180deg);
  box-shadow: 0 0 32px rgba(139, 92, 246, 0.4), var(--shadow-lg);
  background: var(--card-hover);
}

.theme-toggle-btn:active {
  transform: scale(0.95) rotate(180deg);
}

/* Enhanced tables */
.table {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.table th {
  background: rgba(139, 92, 246, 0.1);
  border-bottom: 2px solid var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.1em;
  color: var(--accent);
  padding: 1rem 0.75rem;
}

.table td {
  padding: 0.875rem 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  vertical-align: middle;
}

.table tbody tr {
  transition: all 0.2s ease;
}

.table tbody tr:hover {
  background: rgba(139, 92, 246, 0.08);
  transform: scale(1.01);
}

/* Status badges */
.badge {
  border-radius: calc(var(--radius) * 0.5);
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  backdrop-filter: blur(10px);
}

.badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
}

.bg-success {
  background: rgba(52, 211, 153, 0.2) !important;
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: var(--success) !important;
}

.bg-warning {
  background: rgba(251, 191, 36, 0.2) !important;
  border: 1px solid rgba(251, 191, 36, 0.3);
  color: var(--warning) !important;
}

.bg-danger {
  background: rgba(248, 113, 113, 0.2) !important;
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: var(--danger) !important;
}

.bg-secondary {
  background: rgba(161, 161, 170, 0.2) !important;
  border: 1px solid rgba(161, 161, 170, 0.3);
  color: var(--muted) !important;
}

.bg-primary {
  background: rgba(139, 92, 246, 0.2) !important;
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--accent) !important;
}

/* Loading states */
.btn:disabled {
  opacity: 0.6;
  transform: none !important;
}

/* Responsive enhancements */
@media (max-width: 768px) {
  .theme-toggle-btn {
    right: 16px;
    bottom: 16px;
    width: 48px;
    height: 48px;
  }
}

/* Dark theme specific overrides */
[data-theme="dark"] .card { 
  background: var(--card-bg); 
  border-color: var(--border); 
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select { 
  background: var(--input-bg); 
  border-color: var(--border); 
  color: var(--fg); 
}

[data-theme="dark"] .table th {
  background: rgba(139, 92, 246, 0.1);
}

/* Premium animations and effects */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-6px); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: var(--shadow-glow); }
  50% { box-shadow: 0 0 48px rgba(139, 92, 246, 0.4), var(--shadow-lg); }
}

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

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.floating {
  animation: float 6s ease-in-out infinite;
}

.glow-pulse {
  animation: glow-pulse 3s ease-in-out infinite;
}

.shimmer-effect {
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.1) 50%, transparent 100%);
  background-size: 200% 100%;
  animation: shimmer 2s linear infinite;
}

.slide-in {
  animation: slideInUp 0.6s ease-out;
}

/* Loading states enhancement */
.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

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

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.02);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(139, 92, 246, 0.3);
  border-radius: 4px;
  transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(139, 92, 246, 0.5);
}

/* Selection styling */
::selection {
  background: rgba(139, 92, 246, 0.3);
  color: white;
}

::-moz-selection {
  background: rgba(139, 92, 246, 0.3);
  color: white;
}

/* Focus states */
.form-control:focus,
.form-select:focus,
.btn:focus {
  outline: none;
}

/* Hover effects for interactive elements */
.clickable:hover {
  transform: translateY(-2px);
  transition: transform 0.2s ease;
}

/* Mobile responsive updates */
@media (max-width: 768px) {
  .theme-toggle-btn {
    right: 16px;
    bottom: 16px;
    width: 56px;
    height: 56px;
    font-size: 1.25rem;
  }
  
  .glass-card {
    border-radius: var(--radius);
  }
  
  body::before {
    background: 
      radial-gradient(circle at 20% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
      radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.04) 0%, transparent 50%);
  }
}