/**
 * ============================================================
 * STYLES - Main CSS Entry Point
 * ============================================================
 * 
 * Imports all design system files in correct order:
 * 1. Design System (tokens & variables)
 * 2. Theme (light/dark mode)
 * 3. Layout (structure)
 * 4. Components (reusable UI)
 * 5. Utilities (single-purpose classes)
 * 6. Global (baseline styles)
 * 7. Skeleton Loading (animation)
 */

/* 1. Design System - Define all tokens */
@import url('./design-system.css');

/* 2. Theme - Light/Dark mode support */
@import url('./theme.css');

/* 3. Layout - Page structure and grid system */
@import url('./layout.css');

/* 4. Components - Reusable UI components */
@import url('./components.css');

/* 5. Utilities - Single-purpose utility classes */
@import url('./utilities.css');

/* 6. Skeleton Loading - Already has basic styles integrated */
@import url('./skeleton-loading.css');

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

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

h1 {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--spacing-4) 0;
}

h2 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--spacing-3) 0;
}

h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--spacing-2) 0;
}

h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--spacing-2) 0;
}

h5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0 0 var(--spacing-2) 0;
}

p {
  margin: 0 0 var(--spacing-4) 0;
  line-height: var(--line-height-normal);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Code blocks */
code {
  font-family: var(--font-family-mono);
  font-size: 0.875em;
  background: var(--color-background-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
}

pre {
  background: var(--color-background-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: var(--spacing-4);
  overflow-x: auto;
  
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Lists */
ul, ol {
  margin: 0 0 var(--spacing-4) var(--spacing-6);
  padding: 0;
}

li {
  margin-bottom: var(--spacing-2);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-4);
}

th {
  background: var(--color-background-secondary);
  padding: var(--spacing-3);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  border-bottom: 2px solid var(--color-border);
}

td {
  padding: var(--spacing-3);
  border-bottom: 1px solid var(--color-border);
}

tr:hover {
  background: var(--color-surface-hover);
}

/* Horizontal Rule */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-6) 0;
}

/* Form Reset */
input,
textarea,
select,
button {
  font-family: inherit;
  font-size: inherit;
}

/* Link States */
a:visited {
  color: var(--color-primary);
}

a:active {
  color: var(--color-primary-dark);
}

/* Selection Colors */
::selection {
  background: var(--color-primary);
  color: white;
}

::-moz-selection {
  background: var(--color-primary);
  color: white;
}

/* Scrollbar Styling (Webkit) */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-border-dark);
}

/* Print Styles */
@media print {
  a {
    color: inherit;
    text-decoration: underline;
  }
  
  button,
  .btn {
    display: none;
  }
}