/* ✅ COMPLETED: Path of Development - Complete CSS Framework */
/* - Responsive design system with CSS variables */
/* - Component library (cards, buttons, forms, tables) */
/* - Modal system for item modifier management */
/* - Skill tree visualizer styles */
/* - Dark mode support */
/* - Mobile-first responsive design */

/* Path of Development - Main Styles */

:root {
  /* Color Palette */
  --primary-color: #1a365d;
  --primary-light: #2c5282;
  --primary-dark: #153e75;
  --secondary-color: #e53e3e;
  --accent-color: #38a169;
  --background-color: #f7fafc;
  --surface-color: #ffffff;
  --text-primary: #2d3748;
  --text-secondary: #718096;
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
  margin: 0;
  padding: 0;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.header {
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.logo:hover {
  color: var(--primary-light);
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

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

/* Main Content */
.main {
  min-height: calc(100vh - 140px);
  padding: var(--spacing-xl) 0;
}

/* Cards */
.card {
  background: var(--surface-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

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

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background: var(--background-color);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  background: var(--background-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  gap: var(--spacing-xs);
}

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

.btn-primary:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-light);
}

.btn-secondary {
  background-color: var(--surface-color);
  color: var(--text-primary);
  border-color: var(--border-color);
}

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

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

.btn-danger:hover {
  background-color: #c53030;
  border-color: #c53030;
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-lg);
}

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

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--surface-color);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-row {
  display: flex;
  gap: var(--spacing-md);
  align-items: end;
  flex-wrap: wrap;
}

.form-row .form-group {
  flex: 1;
  min-width: 200px;
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table th,
.table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  background-color: var(--background-color);
  font-weight: 600;
  color: var(--text-primary);
}

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

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

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

.grid-cols-1 { grid-template-columns: 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); }

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-secondary); }
.text-primary { color: var(--primary-color); }
.text-danger { color: var(--secondary-color); }
.text-success { color: var(--accent-color); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* Footer */
.footer {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
}

.footer-content {
  text-align: center;
}

.footer-text {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    flex-direction: column;
  }
  
  .form-row .form-group {
    min-width: auto;
  }
}

/* Additional utility classes */
.w-full { width: 100%; }
.h-full { height: 100%; }
.space-y-2 > * + * { margin-top: var(--spacing-sm); }
.space-y-4 > * + * { margin-top: var(--spacing-md); }
.capitalize { text-transform: capitalize; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: 2.25rem; }
.p-4 { padding: var(--spacing-md); }
.py-4 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded { border-radius: var(--radius-md); }
.rounded-full { border-radius: 9999px; }
.overflow-auto { overflow: auto; }
.max-h-40 { max-height: 10rem; }
.cursor-pointer { cursor: pointer; }
.hover\:underline:hover { text-decoration: underline; }
.inline { display: inline; }
.flex-shrink-0 { flex-shrink: 0; }
.w-8 { width: 2rem; }
.h-8 { height: 2rem; }
.bg-primary { background-color: var(--primary-color); }
.bg-gray-50 { background-color: #f9fafb; }
.bg-gray-900 { background-color: #111827; }
.bg-green-50 { background-color: #f0fdf4; }
.bg-blue-50 { background-color: #eff6ff; }
.bg-purple-50 { background-color: #faf5ff; }
.bg-red-50 { background-color: #fef2f2; }
.text-white { color: white; }
.text-gray-100 { color: #f3f4f6; }
.text-green-600 { color: #16a34a; }
.text-green-700 { color: #15803d; }
.text-blue-600 { color: #2563eb; }
.text-blue-700 { color: #1d4ed8; }
.text-purple-600 { color: #9333ea; }
.text-purple-700 { color: #7c3aed; }
.text-red-600 { color: #dc2626; }
.text-red-700 { color: #b91c1c; }

/* Responsive grid classes */
@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
}

/* Dark mode support (future) */
@media (prefers-color-scheme: dark) {
  :root {
    --background-color: #1a202c;
    --surface-color: #2d3748;
    --text-primary: #f7fafc;
    --text-secondary: #a0aec0;
    --border-color: #4a5568;
  }
}

/* Skill Tree Visualizer */
.skill-tree-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: #1a1a1a;
    color: #fff;
}

.skill-tree-header {
    padding: 1rem;
    background: #2a2a2a;
    border-bottom: 1px solid #444;
}

.skill-tree-header h1 {
    margin: 0 0 1rem 0;
    color: #ffd700;
}

.controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.zoom-indicator {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    font-size: 14px;
    color: #fff;
}

.controls .form-select,
.controls .btn {
    padding: 0.5rem 1rem;
    border: 1px solid #555;
    border-radius: 4px;
    background: #333;
    color: #fff;
    font-size: 0.9rem;
}

.controls .form-select:focus,
.controls .btn:focus {
    outline: none;
    border-color: #ffd700;
}

.controls .btn-primary {
    background: #007bff;
    border-color: #007bff;
}

.controls .btn-primary:hover {
    background: #0056b3;
}

.controls .btn-secondary {
    background: #6c757d;
    border-color: #6c757d;
}

.controls .btn-secondary:hover {
    background: #545b62;
}

.skill-tree-canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: #0a0a0a;
}

#skillTreeCanvas {
    display: block;
    cursor: grab;
    background: radial-gradient(circle at center, #1a1a1a 0%, #0a0a0a 100%);
}

#skillTreeCanvas:active {
    cursor: grabbing;
}

.skill-tree-info {
    display: flex;
    background: #2a2a2a;
    border-top: 1px solid #444;
    min-height: 200px;
}

.node-info {
    flex: 1;
    padding: 1rem;
    border-right: 1px solid #444;
}

.node-info h3 {
    margin: 0 0 1rem 0;
    color: #ffd700;
}

.stats {
    flex: 1;
    padding: 1rem;
}

.stats h3 {
    margin: 0 0 1rem 0;
    color: #ffd700;
}

#nodeDetails {
    background: #333;
    padding: 1rem;
    border-radius: 4px;
    min-height: 100px;
}

#buildStats {
    background: #333;
    padding: 1rem;
    border-radius: 4px;
}

#buildStats p {
    margin: 0.5rem 0;
    display: flex;
    justify-content: space-between;
}

#buildStats span {
    color: #ffd700;
    font-weight: bold;
}

@media (max-width: 768px) {
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .skill-tree-info {
        flex-direction: column;
    }
    
    .node-info {
        border-right: none;
        border-bottom: 1px solid #444;
    }
}

/* Modal Styles */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

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

.modal-body {
    padding: var(--spacing-lg);
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
}