/**
 * CECCM CSS Reset
 * Modern, minimal CSS reset for consistent cross-browser styling
 * 
 * Based on: Modern CSS Reset by Andy Bell
 * https://piccalil.li/blog/a-modern-css-reset/
 * 
 * Version: 1.1.0
 * Date: 2026-02-18
 */

/* ============================================
   BOX SIZING
   ============================================ */
/* Apply a natural box layout model to all elements */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* ============================================
   RESET MARGINS & PADDING
   ============================================ */
* {
  margin: 0;
  padding: 0;
}

/* ============================================
   HTML & BODY
   ============================================ */
html {
  /* Make sure to set this to 10px if using rems */
  /* 1rem = 16px by default */
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  /* Improve text rendering */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* IMP-12: Sticky footer pattern — footer stays at bottom even on short pages */
/* Scoped to non-admin, non-dashboard pages (those don't include footer.php) */
body:not(.admin-page):not(.dashboard-page) {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body:not(.admin-page):not(.dashboard-page) .main-content {
  flex: 1;
}

/* ============================================
   MEDIA ELEMENTS
   ============================================ */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

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

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

/* Remove default fieldset styles */
fieldset {
  border: 0;
  padding: 0;
  margin: 0;
  min-width: 0;
}

legend {
  padding: 0;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
/* Improve consistency of default fonts in all browsers */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: inherit;
  font-weight: inherit;
}

/* Remove default ol/ul styles */
ol,
ul {
  list-style: none;
}

/* ============================================
   ACCESSIBILITY - FOCUS STYLES
   ============================================ */

/* Remove default focus outline for mouse users */
/* But keep for keyboard users */
:focus:not(:focus-visible) {
  outline: none;
}

/*
 * Base focus-visible style using design tokens.
 * Covers: links, buttons, inputs, textareas, selects,
 * [tabindex], nav links, sidebar links, dropdown toggles,
 * [aria-haspopup], custom form classes (.form-input, etc.)
 *
 * Theme-specific shadow adjustments are handled via
 * --focus-ring-shadow overrides in design-tokens.css.
 */
a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
.btn:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
.form-input:focus-visible,
.form-textarea:focus-visible,
.form-select:focus-visible,
[tabindex]:focus-visible,
.nav-item:focus-visible,
.nav-link:focus-visible,
[role="navigation"] a:focus-visible,
.sidebar-nav a:focus-visible,
.sidebar-item:focus-visible,
.dropdown-toggle:focus-visible,
[aria-haspopup]:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color-primary);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--focus-ring-radius);
  box-shadow: var(--focus-ring-shadow);
  transition: var(--focus-transition);
}

/* Checkbox & Radio — smaller radius */
input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color-primary);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-sm);
  box-shadow: var(--focus-ring-shadow);
  transition: var(--focus-transition);
}

/* Error state focus */
.form-input.error:focus-visible,
.form-input.is-invalid:focus-visible,
input.error:focus-visible,
input.is-invalid:focus-visible {
  outline-color: var(--focus-color-error);
  box-shadow: var(--focus-ring-error);
}

/* Success state focus */
.form-input.success:focus-visible,
.form-input.is-valid:focus-visible,
input.success:focus-visible,
input.is-valid:focus-visible {
  outline-color: var(--focus-color-success);
  box-shadow: var(--focus-ring-success);
}

/* Card focus — larger radius */
.card:focus-visible,
[role="card"]:focus-visible,
.video-card:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color-primary);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-lg);
  box-shadow: var(--focus-ring-shadow);
  transition: var(--focus-transition);
}

/* Video card — additional lift effect */
.video-card:focus-visible {
  transform: translateY(-4px);
}

/* Menu items & tabs — inset outline to avoid clipping */
[role="menuitem"]:focus-visible,
[role="menuitemcheckbox"]:focus-visible,
[role="menuitemradio"]:focus-visible,
[role="option"]:focus-visible,
[role="tab"]:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color-primary);
  outline-offset: -2px;
  border-radius: var(--focus-ring-radius);
  box-shadow: var(--focus-ring-shadow);
  transition: var(--focus-transition);
}

/* Tablist — standard offset */
[role="tablist"]:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color-primary);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--focus-ring-radius);
  transition: var(--focus-transition);
}

/* Accordion header */
[role="button"][aria-expanded]:focus-visible,
.accordion-header:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color-primary);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--focus-ring-radius);
  box-shadow: var(--focus-ring-shadow);
  transition: var(--focus-transition);
}

/* Modal & Dialog — larger radius */
[role="dialog"]:focus-visible,
[role="alertdialog"]:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color-primary);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-xl);
  box-shadow: var(--focus-ring-shadow);
  transition: var(--focus-transition);
}

/* Close button — pill shape */
.close-btn:focus-visible,
.modal-close:focus-visible,
[aria-label="Close"]:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color-primary);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-full);
  box-shadow: var(--focus-ring-shadow);
  transition: var(--focus-transition);
}

/* ============================================
   HIGH CONTRAST MODE FOCUS STYLES
   ============================================ */
@media (forced-colors: active) {
  :focus-visible {
    outline: 3px solid CanvasText;
    outline-offset: 2px;
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible,
  select:focus-visible {
    outline: 3px solid Highlight;
    outline-offset: 2px;
  }
}

/* ============================================
   FOCUS WITHIN STYLES (for containers)
   ============================================ */
.form-group:focus-within {
  border-color: var(--focus-color-primary);
}

.form-group:focus-within label {
  color: var(--focus-color-primary);
}

.input-wrapper:focus-within {
  border-color: var(--focus-color-primary);
  box-shadow: var(--focus-ring-shadow);
}

/* ============================================
   REDUCED MOTION
   ============================================ */
/* Respect user preference for reduced motion */
@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;
  }
}

/* ============================================
   PREFERS COLOR SCHEME (DARK MODE)
   ============================================ */
@media (prefers-color-scheme: dark) {
  :root {
    /* Dark mode defaults (can be overridden by design tokens) */
    --color-bg: #0a0e1a;
    --color-text: #f8fafc;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  /* Hide elements not needed for printing */
  .no-print,
  nav,
  footer,
  .sidebar,
  .btn,
  .video-container,
  iframe,
  script {
    display: none !important;
  }

  /* Reset body styles for print */
  body {
    background: white !important;
    color: black !important;
    font-size: 12pt !important;
    line-height: 1.5 !important;
  }

  /* Improve link visibility in print */
  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 10pt;
    color: #666;
  }

  /* Don't show link URLs for internal links */
  a[href^="#"]::after,
  a[href^="javascript"]::after {
    content: "";
  }

  /* Page breaks */
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    page-break-after: avoid;
    page-break-inside: avoid;
  }

  img {
    page-break-inside: avoid;
  }

  /* Tables */
  table {
    border-collapse: collapse !important;
  }

  td,
  th {
    padding: 4pt !important;
    border: 1pt solid #ccc !important;
  }
}

/* ============================================
   SELECTION STYLES
   ============================================ */
::selection {
  background-color: var(--color-accent-cyan, #06b6d4);
  color: white;
}

/* ============================================
   SCROLLBAR STYLES (WEBKIT)
   ============================================ */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary, #f1f1f1);
}

::-webkit-scrollbar-thumb {
  background: var(--color-text-muted, #888);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary, #666);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
/* Screen reader only */
.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;
}

/* Skip to content link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent-cyan, #06b6d4);
  color: white;
  padding: 8px 16px;
  z-index: var(--z-max);
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

/* IMP-11: Skip-to-footer link — positioned below the primary skip link */
.skip-to-footer {
  left: auto;
  right: 0;
}