/**
 * dsalathe Design System - Theme & Base Styles
 * Alpine/Swiss Technical Theme
 *
 * Includes: Reset, base typography, utility classes
 * Requires: dsalathe-tokens.css
 *
 * Usage:
 *   <link rel="stylesheet" href="https://static.dsalathe.dev/css/dsalathe-tokens.css">
 *   <link rel="stylesheet" href="https://static.dsalathe.dev/css/dsalathe-theme.css">
 *
 * @version 1.0.0
 */

/* ============================================
 * CSS RESET - Modern, minimal
 * ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  font-feature-settings: normal;
  font-variation-settings: normal;
}

html:focus-within {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  line-height: var(--ds-leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

a {
  color: inherit;
  text-decoration: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* Remove animations for reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

body {
  font-family: var(--ds-font-sans);
  font-size: var(--ds-text-base);
  color: var(--ds-text-primary);
  background-color: var(--ds-background);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--ds-font-display);
  font-weight: var(--ds-font-semibold);
  line-height: var(--ds-leading-tight);
  color: var(--ds-text-primary);
  letter-spacing: var(--ds-tracking-tight);
}

h1 {
  font-size: var(--ds-text-4xl);
  font-weight: var(--ds-font-bold);
}

h2 {
  font-size: var(--ds-text-3xl);
}

h3 {
  font-size: var(--ds-text-2xl);
}

h4 {
  font-size: var(--ds-text-xl);
}

h5 {
  font-size: var(--ds-text-lg);
}

h6 {
  font-size: var(--ds-text-base);
}

p {
  line-height: var(--ds-leading-relaxed);
  color: var(--ds-text-secondary);
}

a {
  color: var(--ds-text-link);
  transition: color var(--ds-transition-fast) var(--ds-ease-out);
}

a:hover {
  color: var(--ds-text-link-hover);
}

strong,
b {
  font-weight: var(--ds-font-semibold);
}

small {
  font-size: var(--ds-text-sm);
}

code,
kbd,
samp,
pre {
  font-family: var(--ds-font-mono);
  font-size: 0.9em;
}

code {
  background-color: var(--ds-surface-sunken);
  padding: var(--ds-space-0-5) var(--ds-space-1);
  border-radius: var(--ds-radius-sm);
  font-size: var(--ds-text-sm);
}

pre {
  background-color: var(--ds-navy-900);
  color: var(--ds-snow-100);
  padding: var(--ds-space-4);
  border-radius: var(--ds-radius-lg);
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
  font-size: var(--ds-text-sm);
}

blockquote {
  border-left: 4px solid var(--ds-glacier-400);
  padding-left: var(--ds-space-4);
  color: var(--ds-text-secondary);
  font-style: italic;
}

hr {
  border: none;
  border-top: 1px solid var(--ds-border);
  margin: var(--ds-space-8) 0;
}

/* Lists with content */
.ds-list ul,
.ds-list ol {
  padding-left: var(--ds-space-6);
}

.ds-list ul {
  list-style-type: disc;
}

.ds-list ol {
  list-style-type: decimal;
}

.ds-list li {
  margin-bottom: var(--ds-space-2);
  line-height: var(--ds-leading-relaxed);
}

/* Tables */
table {
  width: 100%;
}

th {
  text-align: left;
  font-weight: var(--ds-font-semibold);
  padding: var(--ds-space-3) var(--ds-space-4);
  border-bottom: 2px solid var(--ds-border);
}

td {
  padding: var(--ds-space-3) var(--ds-space-4);
  border-bottom: 1px solid var(--ds-border-light);
}

/* Focus styles */
:focus-visible {
  outline: none;
  box-shadow: var(--ds-ring);
}

/* Selection */
::selection {
  background-color: var(--ds-sky-200);
  color: var(--ds-navy-900);
}

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

/* Container */
.ds-container {
  width: 100%;
  max-width: var(--ds-container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--ds-space-4);
  padding-right: var(--ds-space-4);
}

@media (min-width: 640px) {
  .ds-container {
    padding-left: var(--ds-space-6);
    padding-right: var(--ds-space-6);
  }
}

@media (min-width: 1024px) {
  .ds-container {
    padding-left: var(--ds-space-8);
    padding-right: var(--ds-space-8);
  }
}

/* Text colors */
.ds-text-primary { color: var(--ds-text-primary); }
.ds-text-secondary { color: var(--ds-text-secondary); }
.ds-text-muted { color: var(--ds-text-muted); }
.ds-text-inverse { color: var(--ds-text-inverse); }
.ds-text-link { color: var(--ds-text-link); }
.ds-text-success { color: var(--ds-success); }
.ds-text-warning { color: var(--ds-warning); }
.ds-text-error { color: var(--ds-error); }

/* Background colors */
.ds-bg-background { background-color: var(--ds-background); }
.ds-bg-surface { background-color: var(--ds-surface); }
.ds-bg-elevated { background-color: var(--ds-surface-elevated); }
.ds-bg-primary { background-color: var(--ds-primary); }
.ds-bg-secondary { background-color: var(--ds-secondary); }
.ds-bg-accent { background-color: var(--ds-accent); }

/* Font sizes */
.ds-text-xs { font-size: var(--ds-text-xs); }
.ds-text-sm { font-size: var(--ds-text-sm); }
.ds-text-base { font-size: var(--ds-text-base); }
.ds-text-lg { font-size: var(--ds-text-lg); }
.ds-text-xl { font-size: var(--ds-text-xl); }
.ds-text-2xl { font-size: var(--ds-text-2xl); }
.ds-text-3xl { font-size: var(--ds-text-3xl); }
.ds-text-4xl { font-size: var(--ds-text-4xl); }

/* Font weights */
.ds-font-light { font-weight: var(--ds-font-light); }
.ds-font-normal { font-weight: var(--ds-font-normal); }
.ds-font-medium { font-weight: var(--ds-font-medium); }
.ds-font-semibold { font-weight: var(--ds-font-semibold); }
.ds-font-bold { font-weight: var(--ds-font-bold); }

/* Font families */
.ds-font-sans { font-family: var(--ds-font-sans); }
.ds-font-mono { font-family: var(--ds-font-mono); }

/* Spacing utilities */
.ds-p-0 { padding: var(--ds-space-0); }
.ds-p-1 { padding: var(--ds-space-1); }
.ds-p-2 { padding: var(--ds-space-2); }
.ds-p-3 { padding: var(--ds-space-3); }
.ds-p-4 { padding: var(--ds-space-4); }
.ds-p-6 { padding: var(--ds-space-6); }
.ds-p-8 { padding: var(--ds-space-8); }

.ds-m-0 { margin: var(--ds-space-0); }
.ds-m-1 { margin: var(--ds-space-1); }
.ds-m-2 { margin: var(--ds-space-2); }
.ds-m-3 { margin: var(--ds-space-3); }
.ds-m-4 { margin: var(--ds-space-4); }
.ds-m-6 { margin: var(--ds-space-6); }
.ds-m-8 { margin: var(--ds-space-8); }
.ds-m-auto { margin: auto; }

.ds-mt-0 { margin-top: var(--ds-space-0); }
.ds-mt-1 { margin-top: var(--ds-space-1); }
.ds-mt-2 { margin-top: var(--ds-space-2); }
.ds-mt-4 { margin-top: var(--ds-space-4); }
.ds-mt-6 { margin-top: var(--ds-space-6); }
.ds-mt-8 { margin-top: var(--ds-space-8); }

.ds-mb-0 { margin-bottom: var(--ds-space-0); }
.ds-mb-1 { margin-bottom: var(--ds-space-1); }
.ds-mb-2 { margin-bottom: var(--ds-space-2); }
.ds-mb-4 { margin-bottom: var(--ds-space-4); }
.ds-mb-6 { margin-bottom: var(--ds-space-6); }
.ds-mb-8 { margin-bottom: var(--ds-space-8); }

/* Gap utilities */
.ds-gap-1 { gap: var(--ds-space-1); }
.ds-gap-2 { gap: var(--ds-space-2); }
.ds-gap-3 { gap: var(--ds-space-3); }
.ds-gap-4 { gap: var(--ds-space-4); }
.ds-gap-6 { gap: var(--ds-space-6); }
.ds-gap-8 { gap: var(--ds-space-8); }

/* Flexbox */
.ds-flex { display: flex; }
.ds-inline-flex { display: inline-flex; }
.ds-flex-col { flex-direction: column; }
.ds-flex-row { flex-direction: row; }
.ds-flex-wrap { flex-wrap: wrap; }
.ds-items-start { align-items: flex-start; }
.ds-items-center { align-items: center; }
.ds-items-end { align-items: flex-end; }
.ds-justify-start { justify-content: flex-start; }
.ds-justify-center { justify-content: center; }
.ds-justify-end { justify-content: flex-end; }
.ds-justify-between { justify-content: space-between; }
.ds-flex-1 { flex: 1 1 0%; }
.ds-flex-auto { flex: 1 1 auto; }
.ds-flex-none { flex: none; }

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

/* Border radius */
.ds-rounded-none { border-radius: var(--ds-radius-none); }
.ds-rounded-sm { border-radius: var(--ds-radius-sm); }
.ds-rounded { border-radius: var(--ds-radius-md); }
.ds-rounded-lg { border-radius: var(--ds-radius-lg); }
.ds-rounded-xl { border-radius: var(--ds-radius-xl); }
.ds-rounded-full { border-radius: var(--ds-radius-full); }

/* Shadows */
.ds-shadow-none { box-shadow: var(--ds-shadow-none); }
.ds-shadow-sm { box-shadow: var(--ds-shadow-sm); }
.ds-shadow { box-shadow: var(--ds-shadow-md); }
.ds-shadow-lg { box-shadow: var(--ds-shadow-lg); }
.ds-shadow-xl { box-shadow: var(--ds-shadow-xl); }

/* Borders */
.ds-border { border: 1px solid var(--ds-border); }
.ds-border-light { border: 1px solid var(--ds-border-light); }
.ds-border-strong { border: 1px solid var(--ds-border-strong); }
.ds-border-t { border-top: 1px solid var(--ds-border); }
.ds-border-b { border-bottom: 1px solid var(--ds-border); }
.ds-border-l { border-left: 1px solid var(--ds-border); }
.ds-border-r { border-right: 1px solid var(--ds-border); }

/* Display */
.ds-block { display: block; }
.ds-inline-block { display: inline-block; }
.ds-inline { display: inline; }
.ds-hidden { display: none; }

/* Width & Height */
.ds-w-full { width: 100%; }
.ds-h-full { height: 100%; }
.ds-min-h-screen { min-height: 100vh; }

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

/* Position */
.ds-relative { position: relative; }
.ds-absolute { position: absolute; }
.ds-fixed { position: fixed; }
.ds-sticky { position: sticky; }

/* Text alignment */
.ds-text-left { text-align: left; }
.ds-text-center { text-align: center; }
.ds-text-right { text-align: right; }

/* Opacity */
.ds-opacity-0 { opacity: 0; }
.ds-opacity-50 { opacity: 0.5; }
.ds-opacity-75 { opacity: 0.75; }
.ds-opacity-100 { opacity: 1; }

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

/* Transitions */
.ds-transition {
  transition-property: color, background-color, border-color, box-shadow, transform, opacity;
  transition-timing-function: var(--ds-ease-out);
  transition-duration: var(--ds-transition-normal);
}

.ds-transition-fast {
  transition-duration: var(--ds-transition-fast);
}

.ds-transition-slow {
  transition-duration: var(--ds-transition-slow);
}

/* Screen reader only */
.ds-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
 * RESPONSIVE UTILITIES
 * ============================================ */

@media (min-width: 640px) {
  .sm\:ds-flex { display: flex; }
  .sm\:ds-hidden { display: none; }
  .sm\:ds-block { display: block; }
  .sm\:ds-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sm\:ds-grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sm\:ds-flex-row { flex-direction: row; }
  .sm\:ds-text-left { text-align: left; }
}

@media (min-width: 768px) {
  .md\:ds-flex { display: flex; }
  .md\:ds-hidden { display: none; }
  .md\:ds-block { display: block; }
  .md\:ds-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:ds-grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:ds-grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .md\:ds-flex-row { flex-direction: row; }
}

@media (min-width: 1024px) {
  .lg\:ds-flex { display: flex; }
  .lg\:ds-hidden { display: none; }
  .lg\:ds-block { display: block; }
  .lg\:ds-grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:ds-grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}