/* --------------------------------------------------------------------------
   EDITORIAL DESIGN SYSTEM
   -------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:ital,wght@0,400..700;1,400..700&family=Oswald:wght@300..700&display=swap');

:root {
  --color-paper: #f2f0ea;
  --color-surface: #faf9f5;
  --color-ink: #151513;
  --color-dark: #101110;
  --color-concrete: #a5a49e;
  --color-border: rgba(21, 21, 19, 0.16);
  --color-accent: #315cff;
  
  --font-display: 'Oswald', ui-sans-serif, system-ui, sans-serif;
  --font-serif: 'Newsreader', ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --font-sans: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  --duration-fast: 160ms;
  --duration-normal: 240ms;
  --ease-editorial: cubic-bezier(0.22, 1, 0.36, 1);
}

body.edition-page {
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

/* --------------------------------------------------------------------------
   TYPOGRAPHY
   -------------------------------------------------------------------------- */
.editorial-title {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0;
  margin: 0;
}

.editorial-body {
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  line-height: 1.65;
  color: var(--color-ink);
}

@media (min-width: 768px) {
  .editorial-body {
    font-size: 1.25rem; /* 20px */
    line-height: 1.7;
  }
}

.editorial-meta {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--color-concrete);
}

.editorial-meta .badge-cat {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   EDITION HERO
   -------------------------------------------------------------------------- */
.edition-hero {
  position: relative;
  min-height: 65svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background-color: var(--color-dark);
  color: var(--color-surface);
  overflow: hidden;
}

@media (min-width: 768px) {
  .edition-hero {
    min-height: 80svh;
  }
}

.edition-hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.65);
}

.edition-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(16, 17, 16, 0.95) 0%, rgba(16, 17, 16, 0.4) 50%, transparent 85%);
}

.edition-hero__content {
  position: relative;
  z-index: 2;
  padding: 2rem 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

@media (min-width: 768px) {
  .edition-hero__content {
    padding: 4rem 2rem;
  }
}

.edition-hero__logo {
  width: min(440px, 85vw);
  height: auto;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,.35));
  opacity: 0.95;
  margin-bottom: 2rem;
  display: block;
}

.edition-hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3.5rem, 7vw, 6.5rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
  max-width: 1000px;
}

.edition-hero__excerpt {
  font-family: var(--font-sans);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  line-height: 1.5;
  color: rgba(255,255,255,0.85);
  max-width: 750px;
  margin-bottom: 1.75rem;
}

.edition-hero__meta {
  font-family: var(--font-sans);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   STICKY NAVIGATION
   -------------------------------------------------------------------------- */
.edition-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
  transition: transform var(--duration-normal) var(--ease-editorial);
}

.edition-nav__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  overflow-x: auto;
  padding: 0 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  scrollbar-width: none;
}

.edition-nav__inner::-webkit-scrollbar {
  display: none;
}

.edition-nav__label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-concrete);
  white-space: nowrap;
}

.edition-nav__link {
  font-family: var(--font-sans);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-ink);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  padding: 0.5rem 0;
  opacity: 0.6;
  transition: opacity var(--duration-fast) var(--ease-editorial);
}

.edition-nav__link:hover, .edition-nav__link.active {
  opacity: 1;
}

.edition-nav__num {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   SECTION CHAPTERS
   -------------------------------------------------------------------------- */
.edition-section {
  padding-block: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding-inline: 1.25rem;
}

@media (min-width: 768px) {
  .edition-section {
    padding-block: 6rem 3rem;
    padding-inline: 2rem;
  }
}

.section-header {
  margin-bottom: 3rem;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
}

.section-header__num {
  font-size: clamp(3.5rem, 7vw, 5.5rem);
  font-weight: 300;
  color: var(--color-accent);
  line-height: 1;
  font-family: var(--font-sans);
}

.section-header__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5.5vw, 5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0;
  color: var(--color-ink);
  margin: 0;
}

/* --------------------------------------------------------------------------
   ARTICLE PREVIEWS
   -------------------------------------------------------------------------- */
.preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 992px) {
  .preview-grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 2rem;
  }
}

/* Featured Article */
.preview-featured {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 992px) {
  .preview-featured {
    grid-column: span 12;
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }
}

.preview-featured__media {
  width: 100%;
}

@media (min-width: 992px) {
  .preview-featured__media {
    flex: 0 0 60%;
  }
}

.preview-featured__media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.preview-featured__content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 992px) {
  .preview-featured__content {
    flex: 1;
  }
}

.preview-featured__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.1;
  letter-spacing: 0;
  margin: 0;
}

.preview-featured__excerpt {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-concrete);
  margin: 0;
}

/* Secondary Articles */
.preview-secondary {
  display: flex;
  gap: 1rem;
  flex-direction: column;
}

@media (min-width: 768px) {
  .preview-secondary {
    flex-direction: row;
  }
}

@media (min-width: 992px) {
  .preview-secondary {
    grid-column: span 4;
    flex-direction: column;
  }
}

.preview-secondary__media {
  width: 100%;
}

@media (min-width: 768px) and (max-width: 991px) {
  .preview-secondary__media {
    flex: 0 0 40%;
  }
}

.preview-secondary__media img {
  width: 100%;
  height: auto;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.preview-secondary__content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preview-secondary__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.75rem;
  line-height: 1.15;
  letter-spacing: 0;
  margin: 0;
}

.preview-secondary__excerpt {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-concrete);
  margin: 0;
}

.read-action {
  font-family: var(--font-sans);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-accent);
  text-decoration: none;
  margin-top: 0.5rem;
  transition: transform var(--duration-fast) var(--ease-editorial);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  min-height: 44px; /* Touch target size */
}

.read-action:hover {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   FULL-WIDTH ADVERTISEMENTS
   -------------------------------------------------------------------------- */
.advertisement-break {
  width: 100vw;
  margin-inline: calc(50% - 50vw);
  padding-block: clamp(40px, 7vw, 120px);
  background: var(--color-dark);
  text-align: center;
  margin-top: 3rem;
  margin-bottom: 3rem;
}

.advertisement-break__header {
  font-family: var(--font-sans);
  width: min(calc(100% - 48px), 1440px);
  margin: 0 auto 14px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: left;
}

.advertisement-break picture,
.advertisement-break img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   IMMERSIVE ARTICLE READER (OVERLAY)
   -------------------------------------------------------------------------- */
.article-reader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  overflow-y: auto;
  background: var(--color-paper);
  transform: translateY(100%);
  opacity: 0;
  transition: transform var(--duration-normal) var(--ease-editorial), opacity var(--duration-normal) var(--ease-editorial);
  visibility: hidden;
}

.article-reader.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.reader-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-paper);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}

.reader-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  padding: 0.5rem;
  min-height: 44px; /* Touch target */
}

.reader-back:hover {
  color: var(--color-accent);
}

.reader-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.25rem 6rem;
}

.reader-hero {
  margin-bottom: 3rem;
}

.reader-hero__meta {
  margin-bottom: 1rem;
}

.reader-hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.1;
  letter-spacing: 0;
  margin-bottom: 1.5rem;
}

.reader-hero__excerpt {
  font-family: var(--font-sans);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.5;
  color: var(--color-concrete);
  font-style: italic;
  margin-bottom: 2rem;
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
}

.reader-hero__image {
  width: 100%;
  height: auto;
  margin-bottom: 2rem;
}

.reader-body {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-ink);
}

@media (min-width: 768px) {
  .reader-body {
    font-size: 1.25rem;
  }
}

.reader-body p {
  margin-bottom: 1.5rem;
}

.reader-body h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2.2rem;
  line-height: 1.15;
  letter-spacing: 0;
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.reader-body h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.7rem;
  line-height: 1.15;
  letter-spacing: 0;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.reader-body img {
  max-width: 100%;
  height: auto;
  margin: 2rem 0;
}

.reader-body iframe {
  max-width: 100%;
  aspect-ratio: 16/9;
  margin: 2rem 0;
}

.reader-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

/* --------------------------------------------------------------------------
   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;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}