/**
 * XPWD Website 2.0 - Base Styles
 * Foundation styles using design tokens
 */

@import url('design-tokens.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&family=Fira+Code:wght@400;500&display=swap');

/* ================================
   CSS RESET & BASE
   ================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ================================
   TYPOGRAPHY
   ================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-weight-black);
}

h2 {
  font-size: var(--text-4xl);
}

h3 {
  font-size: var(--text-3xl);
}

h4 {
  font-size: var(--text-2xl);
}

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

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

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

em {
  font-style: italic;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: var(--space-1) var(--space-2);
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  color: var(--code-text);
}

pre {
  font-family: var(--font-mono);
  padding: var(--space-4);
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

pre code {
  padding: 0;
  background: none;
  border: none;
}

/* ================================
   LISTS
   ================================ */

ul, ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

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

/* ================================
   IMAGES & MEDIA
   ================================ */

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

img[loading="lazy"] {
  background-color: var(--color-background-alt);
}

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

input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

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

.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;
}

.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-xs);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-sm);
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: var(--container-md);
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: var(--container-lg);
  }
}

@media (min-width: 1536px) {
  .container {
    max-width: var(--container-xl);
  }
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  z-index: var(--z-max);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
}

.skip-link:focus {
  top: var(--space-2);
  left: var(--space-2);
}

/* ================================
   CYBER AESTHETIC EFFECTS
   ================================ */

@keyframes scanline {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100vh);
  }
}

.cyber-scanline::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--scan-line-color) 50%,
    transparent 100%
  );
  opacity: 0.5;
  animation: scanline 8s linear infinite;
  pointer-events: none;
  z-index: var(--z-max);
}

.glow {
  box-shadow: var(--glow-primary);
}

.glow-subtle {
  box-shadow: var(--glow-subtle);
}

/* ================================
   FOCUS VISIBLE IMPROVEMENTS
   ================================ */

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ================================
   LOADING STATE
   ================================ */

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

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

.spinner {
  animation: spin 1s linear infinite;
}

/* ================================
   PRINT STYLES
   ================================ */

@media print {
  body {
    background: white;
    color: black;
  }

  .no-print {
    display: none !important;
  }

  a[href]::after {
    content: " (" attr(href) ")";
  }

  a[href^="#"]::after,
  a[href^="javascript:"]::after {
    content: "";
  }
}