/* =========================
   DESIGN SYSTEM - AInvesting Pro
   Tech/Cyberpunk Aesthetic
   ========================= */

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

:root {
  /* Colors (Dark Mode Neon) */
  --primary: #00D9FF;                       /* Cyan Neon */
  --primary-rgb: 0, 217, 255;
  --primary-dark: #00B8D9;
  --primary-light: #33E3FF;
  
  --background: #020617;                    /* Deep Black/Blue */
  --foreground: #F1F5F9;                    /* Off-white */
  
  --card: #0B0F19;                          /* Dark Card */
  --card-hover: #111827;
  
  --border: #1E293B;                        /* Subtle borders */
  --border-light: #334155;
  
  --success: #22C55E;                       /* Neon Green */
  --success-rgb: 34, 197, 94;
  --danger: #EF4444;                        /* Neon Red */
  --danger-rgb: 239, 68, 68;
  --warning: #F59E0B;                       /* Yellow */
  --info: #3B82F6;                          /* Blue */
  
  --muted: #64748B;                         /* Gray text */
  --muted-dark: #475569;
  
  --indigo: #6366F1;
  --purple: #A855F7;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-display: 'Rajdhani', sans-serif;
  
  /* Spacing */
  --radius: 0.25rem;                        /* Subtle radius for tech look */
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px -5px var(--primary);
  --shadow-glow-success: 0 0 20px -5px var(--success);
  --shadow-glow-danger: 0 0 20px -5px var(--danger);
  
  /* Transitions */
  --transition: all 0.2s ease;
  --transition-slow: all 0.3s ease;
}

/* =========================
   BASE STYLES
   ========================= */

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

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  line-height: 1.2;
}

.font-mono {
  font-family: var(--font-mono);
}

a {
  color: inherit;
  text-decoration: none;
}

/* =========================
   LAYOUT
   ========================= */

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .container { padding: 0 1.5rem; }
}

@media (min-width: 1024px) {
  .container { padding: 0 2rem; }
}

/* =========================
   BUTTONS
   ========================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  font-family: var(--font-sans);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--indigo));
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 0 30px -5px var(--primary);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--indigo), var(--purple));
  color: white;
}

.btn-secondary:hover:not(:disabled) {
  transform: translateY(-2px);
}

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

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

.btn-ghost {
  background: transparent;
  color: var(--muted);
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary);
}

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

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

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.75rem;
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: var(--radius);
}

/* =========================
   CARDS
   ========================= */

.glass-card {
  background: rgba(11, 15, 25, 0.6);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-xl);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition);
}

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

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: var(--radius);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.3s;
}

.stat-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

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

.stat-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--foreground);
  line-height: 1;
}

.stat-trend {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* =========================
   BADGES
   ========================= */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-primary {
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary);
  border-color: rgba(var(--primary-rgb), 0.2);
}

.badge-success {
  background: rgba(var(--success-rgb), 0.1);
  color: var(--success);
  border-color: rgba(var(--success-rgb), 0.2);
}

.badge-danger {
  background: rgba(var(--danger-rgb), 0.1);
  color: var(--danger);
  border-color: rgba(var(--danger-rgb), 0.2);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.2);
}

.badge-info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info);
  border-color: rgba(59, 130, 246, 0.2);
}

.badge-live {
  background: rgba(var(--primary-rgb), 0.1);
  border: 1px solid rgba(var(--primary-rgb), 0.3);
  color: var(--primary);
  animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
  0%, 100% { border-color: rgba(var(--primary-rgb), 0.3); }
  50% { border-color: rgba(var(--primary-rgb), 0.6); }
}

.ping-dot {
  position: relative;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--primary);
  border-radius: 50%;
  animation: ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.ping-dot::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--primary);
  animation: ping-opacity 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
  75%, 100% { transform: scale(2); opacity: 0; }
}

@keyframes ping-opacity {
  0% { opacity: 1; }
  75%, 100% { opacity: 0; }
}

/* =========================
   NAVIGATION
   ========================= */

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  color: var(--muted);
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid transparent;
  font-weight: 500;
}

.nav-item:hover {
  background: var(--card);
  color: var(--foreground);
  border-color: var(--border);
}

.nav-item.active {
  background: rgba(var(--primary-rgb), 0.1);
  border-color: rgba(var(--primary-rgb), 0.3);
  color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.nav-item.active i {
  animation: pulse 2s infinite;
}

/* =========================
   TABLES
   ========================= */

.signal-table {
  width: 100%;
  font-size: 0.875rem;
  border-collapse: collapse;
}

.signal-table thead {
  background: var(--card);
  border-bottom: 2px solid var(--border);
}

.signal-table th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.signal-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

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

.signal-table tbody tr:hover {
  background: var(--card-hover);
}

/* =========================
   FORMS
   ========================= */

.input-group {
  margin-bottom: 1rem;
}

.label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--foreground);
}

.input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  transition: var(--transition);
}

.input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

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

.select {
  width: auto;
  min-width: 100px;
  padding: 0.5rem 0.75rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.1);
}

.select:hover {
  border-color: var(--primary);
  background: var(--card-hover);
}

#language-selector {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--foreground);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}

#language-selector:hover {
  border-color: var(--primary);
}

#language-selector:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.1);
}

/* =========================
   TICKER
   ========================= */

.ticker-container {
  overflow: hidden;
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.ticker-track {
  display: flex;
  gap: 3rem;
  animation: ticker-scroll 40s linear infinite;
  white-space: nowrap;
}

@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.ticker-symbol {
  font-weight: 700;
  color: var(--foreground);
}

.ticker-price {
  font-weight: 600;
}

/* =========================
   GRADIENTS
   ========================= */

.text-gradient-primary {
  background: linear-gradient(135deg, var(--primary), var(--indigo), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient-primary {
  background: linear-gradient(135deg, var(--primary), var(--indigo));
}

.bg-gradient-card {
  background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.05), rgba(99, 102, 241, 0.05));
}

/* =========================
   MODULE SELECTOR
   ========================= */

.module-selector {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.module-btn {
  flex: 1;
  min-width: 200px;
  padding: 1rem 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-slow);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.875rem;
}

.module-btn:hover {
  border-color: var(--primary);
  background: rgba(var(--primary-rgb), 0.05);
  color: var(--foreground);
}

.module-btn.active {
  background: rgba(var(--primary-rgb), 0.1);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.module-btn i {
  font-size: 1.25rem;
}

/* =========================
   ANIMATIONS
   ========================= */

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

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

.animate-fade-in {
  animation: fade-in 0.6s ease-out;
}

.animate-fade-in-up {
  animation: fade-in-up 0.6s ease-out;
}

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

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* =========================
   BACKDROP & BLUR
   ========================= */

.backdrop-blur-sm {
  backdrop-filter: blur(8px);
}

.backdrop-blur-md {
  backdrop-filter: blur(12px);
}

.backdrop-blur-lg {
  backdrop-filter: blur(16px);
}

/* =========================
   UTILITY CLASSES
   ========================= */

/* Display */
.hidden { display: none !important; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Flexbox */
.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-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

/* Grid */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .md\:flex-row { flex-direction: row; }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:col-span-2 { grid-column: span 2 / span 2; }
}

/* Spacing */
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }

.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }

.pt-24 { padding-top: 6rem; }
.pb-32 { padding-bottom: 8rem; }

.m-0 { margin: 0; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mr-2 { margin-right: 0.5rem; }
.ml-2 { margin-left: 0.5rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Sizing */
.w-full { width: 100%; }
.w-64 { width: 16rem; }
.w-10 { width: 2.5rem; }
.w-8 { width: 2rem; }
.w-6 { width: 1.5rem; }
.w-5 { width: 1.25rem; }
.w-4 { width: 1rem; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }
.h-20 { height: 5rem; }
.h-10 { height: 2.5rem; }
.h-8 { height: 2rem; }
.h-6 { height: 1.5rem; }
.h-5 { height: 1.25rem; }
.h-4 { height: 1rem; }
.min-h-screen { min-height: 100vh; }
.max-w-md { max-width: 28rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-7xl { max-width: 80rem; }

/* Text */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-7xl { font-size: 4.5rem; line-height: 1; }

@media (min-width: 768px) {
  .md\:text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
  .md\:text-7xl { font-size: 4.5rem; line-height: 1; }
}

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.font-normal { font-weight: 400; }
.font-light { font-weight: 300; }

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

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

.tracking-tight { letter-spacing: -0.025em; }
.tracking-wide { letter-spacing: 0.025em; }
.tracking-wider { letter-spacing: 0.05em; }

.leading-tight { line-height: 1.25; }
.leading-relaxed { line-height: 1.625; }

/* Colors */
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--muted); }
.text-foreground { color: var(--foreground); }

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

.border-primary { border-color: var(--primary); }
.border-success { border-color: var(--success); }
.border-danger { border-color: var(--danger); }
.border-border { border-color: var(--border); }

.border-l-4 { border-left-width: 4px; }
.border-t { border-top-width: 1px; }
.border-b { border-bottom-width: 1px; }
.border-r { border-right-width: 1px; }

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

/* Z-index */
.z-10 { z-index: 10; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

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

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

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

/* Transitions */
.transition-all { transition: var(--transition); }
.transition-colors { transition: color 0.2s, background-color 0.2s, border-color 0.2s; }

/* Hover effects */
.hover\:scale-105:hover { transform: scale(1.05); }
.hover\:border-primary:hover { border-color: var(--primary); }
.hover\:text-primary:hover { color: var(--primary); }
.hover\:-translate-y-1:hover { transform: translateY(-0.25rem); }

/* Shadow */
.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Space */
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }
.space-y-8 > * + * { margin-top: 2rem; }

/* Responsive */
@media (min-width: 768px) {
  .md\:flex { display: flex; }
  .md\:hidden { display: none; }
  .md\:w-64 { width: 16rem; }
  .md\:h-screen { height: 100vh; }
}

@media (min-width: 1024px) {
  .lg\:col-span-2 { grid-column: span 2 / span 2; }
}