/* ==========================================================================
   Retro Editorial Reset & Base Rules
   ========================================================================== */

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-base);
  color: var(--color-text-main);
  background-color: var(--retro-cream);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ==========================================================================
   Selection
   ========================================================================== */
::selection {
  background-color: var(--retro-orange);
  color: #ffffff;
}

/* ==========================================================================
   Retro Typography Base Styles
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading-retro);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-main);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

h1 {
  font-size: var(--font-size-hero);
  letter-spacing: 0.05em;
}

h2 {
  font-size: var(--font-size-4xl);
  letter-spacing: 0.04em;
}

h3 {
  font-size: var(--font-size-2xl);
  letter-spacing: 0.03em;
}

h4 {
  font-size: var(--font-size-xl);
  letter-spacing: 0.02em;
}

h5 {
  font-size: var(--font-size-lg);
  font-family: var(--font-sans);
  text-transform: none;
  letter-spacing: 0;
}

h6 {
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  text-transform: none;
  letter-spacing: 0;
}

p {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

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

/* ==========================================================================
   Images & Media Elements
   ========================================================================== */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   Form & Interactive Elements Reset
   ========================================================================== */
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
  background: transparent;
  border: none;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

ul,
ol {
  list-style: none;
}

/* ==========================================================================
   Accessibility & Focus States
   ========================================================================== */
:focus-visible {
  outline: 2px solid var(--retro-orange);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Skip-to-content accessibility link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-3) var(--space-6);
  background-color: var(--retro-charcoal-dark);
  color: var(--retro-cream);
  font-family: var(--font-heading-retro);
  font-size: var(--font-size-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 2px solid var(--retro-orange);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-retro-hard);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Screen-reader-only utility class */
.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;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

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

/* ==========================================================================
   RETRO GRAPHIC UTILITIES & DETAILS (Directly from reference)
   ========================================================================== */

/* 1. Hanging Ribbon Bookmark Tag on Section Headings */
.retro-bookmark-tag {
  display: inline-block;
  width: 22px;
  height: 32px;
  background-color: rgba(35, 38, 41, 0.2);
  position: relative;
  margin-right: var(--space-3);
  vertical-align: middle;
  border: 1px solid rgba(35, 38, 41, 0.35);
  border-bottom: none;
}

.retro-bookmark-tag::after {
  content: '';
  position: absolute;
  bottom: -9px;
  left: -1px;
  right: -1px;
  height: 10px;
  background: inherit;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  border-left: 1px solid rgba(35, 38, 41, 0.35);
  border-right: 1px solid rgba(35, 38, 41, 0.35);
}

/* Variant bookmark for dark backgrounds */
.retro-bookmark-tag.tag-light {
  background-color: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.45);
}

.retro-bookmark-tag.tag-light::after {
  border-color: rgba(255, 255, 255, 0.45);
}

/* 2. Vintage Ribbon Banner with Notched Folds */
.retro-ribbon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: var(--retro-cream);
  color: var(--retro-charcoal-dark);
  font-family: var(--font-heading-retro);
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.5rem 2rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  border-top: 1px solid rgba(35, 38, 41, 0.3);
  border-bottom: 1px solid rgba(35, 38, 41, 0.3);
}

.retro-ribbon::before,
.retro-ribbon::after {
  content: '';
  position: absolute;
  top: 4px;
  bottom: 4px;
  width: 14px;
  background: var(--retro-cream-paper);
  z-index: -1;
}

.retro-ribbon::before {
  left: -10px;
  clip-path: polygon(100% 0, 0 50%, 100% 100%);
}

.retro-ribbon::after {
  right: -10px;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

/* 3. Stitched / Perforated Border Divider */
.stitched-divider {
  width: 100%;
  height: 0;
  border-bottom: 2px dashed rgba(255, 255, 255, 0.38);
  position: relative;
  margin: var(--space-8) 0;
}

.stitched-divider-dark {
  border-bottom-color: rgba(35, 38, 41, 0.25);
}

/* 4. Circular Retro Badge / Stamp Seal */
.retro-seal-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background-color: var(--retro-orange);
  color: #ffffff;
  border: 3px solid #ffffff;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.22);
  position: relative;
  flex-shrink: 0;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.retro-seal-badge::before {
  content: '';
  position: absolute;
  inset: 2px;
  border: 1px dashed rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-full);
  pointer-events: none;
}

.retro-seal-badge:hover {
  transform: scale(1.05);
}

/* 5. Retro Framed Container */
.retro-frame {
  background: #ffffff;
  border: 6px solid #ffffff;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgba(25, 30, 35, 0.16);
  position: relative;
  overflow: hidden;
}