/* ==========================================================================
   RESET & SYSTEM BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--body-font), sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

/* CONTAINER CONTROLS */
.network-container {
  width: 100%;
  max-width: var(--container-width, 1340px);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 3vw, 2.5rem);
  padding-right: clamp(1rem, 3vw, 2.5rem);
}

/* ==========================================================================
   MASTHEAD VARIATIONS
   ========================================================================== */

/* 1. Classic Luxury Centered (Executive Exchange, Visionary Journal) */
.masthead-luxury-centered {
  padding: 2.5rem 0 1.5rem;
  text-align: center;
  border-bottom: var(--border-style);
}
.masthead-luxury-centered .brand-title {
  font-family: var(--display-font), serif;
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
}
.masthead-luxury-centered .tagline {
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.8rem;
}

/* 2. Broadsheet Double Rule (Leadership Column, Industry Herald) */
.masthead-broadsheet {
  padding: 1rem 0;
  text-align: center;
  border-top: 3px double var(--primary);
  border-bottom: 3px double var(--primary);
  margin: 1.5rem 0 0;
}
.masthead-broadsheet .meta-date-line {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(0,0,0,0.15);
}
.masthead-broadsheet .brand-title {
  font-family: var(--display-font), serif;
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0.5rem 0;
}

/* 3. Newsroom Ticker & Left-Aligned Bold (Corporate Dispatch) */
.masthead-wire {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 1.5rem 0;
  border-bottom: 3px solid var(--secondary);
}
.masthead-wire .brand-title {
  font-family: var(--display-font), sans-serif;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 0.95;
}

/* 4. Constructivist Heavy Poster (Business Vanguard) */
.masthead-constructivist {
  padding: 2.5rem 0 1rem;
  background: var(--primary);
  color: #FFFFFF;
}
.masthead-constructivist .brand-title {
  font-family: var(--display-font), sans-serif;
  font-size: clamp(3.4rem, 8vw, 7.5rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  line-height: 0.85;
}

/* ==========================================================================
   GLOBAL NAVIGATION (THE 5 CORE TABS)
   ========================================================================== */
.global-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: var(--border-style);
  padding: 0.9rem 0;
}
.nav-links {
  display: flex;
  gap: clamp(1rem, 2.5vw, 2.5rem);
  list-style: none;
}
.nav-link {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
  transition: color 0.2s ease;
}
.nav-link:hover, .nav-link.active {
  color: var(--secondary);
}
.submit-op-btn {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.55rem 1.25rem;
  background: var(--secondary);
  color: #FFFFFF !important;
  border-radius: var(--border-radius);
  transition: transform 0.2s, opacity 0.2s;
}
.submit-op-btn:hover {
  transform: translateY(-1px);
  opacity: 0.9;
}

/* ==========================================================================
   LAYOUT ARCHITECTURES (DIFFERENT VISUAL GRAMMARS)
   ========================================================================== */

/* LAYOUT 1: SPLIT LUXURY PORTRAIT (The Executive Exchange) */
.layout-split-portrait {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--grid-gap);
  align-items: center;
  padding: 4.5rem 0;
  border-bottom: var(--border-style);
}
.layout-split-portrait .hero-headline {
  font-family: var(--display-font), serif;
  font-size: clamp(2.4rem, 4.2vw, 4.2rem);
  line-height: 1.08;
  font-weight: 400;
  margin-bottom: 1.5rem;
}
.layout-split-portrait .portrait-frame {
  aspect-ratio: 4 / 5;
  background: var(--bg-secondary);
  border: var(--border-style);
  overflow: hidden;
}
.layout-split-portrait .portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(105%);
}

/* LAYOUT 2: ASYMMETRIC OVERLAP (Founder Voice) */
.layout-asymmetric-overlap {
  position: relative;
  padding: 4rem 0 6rem;
  border-bottom: var(--border-style);
}
.layout-asymmetric-overlap .stage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}
.layout-asymmetric-overlap .founder-image-box {
  width: 100%;
  height: 520px;
  background: var(--bg-secondary);
  border: var(--border-style);
  overflow: hidden;
  box-shadow: 12px 12px 0px var(--primary);
}
.layout-asymmetric-overlap .founder-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.layout-asymmetric-overlap .content-card-overlap {
  margin-left: -12%;
  background: #FFFFFF;
  border: var(--border-style);
  padding: 3rem;
  z-index: 10;
  box-shadow: 8px 8px 0px var(--secondary);
}
.layout-asymmetric-overlap .hero-headline {
  font-family: var(--display-font), serif;
  font-size: clamp(2.2rem, 3.8vw, 3.6rem);
  line-height: 1.1;
  color: var(--primary);
  margin-bottom: 1.2rem;
}

/* LAYOUT 3: BROADSHEET NEWSPAPER DENSE (The Leadership Column) */
.layout-newspaper-columns {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: var(--border-style);
}
.layout-newspaper-columns .lead-story {
  border-right: 1px solid rgba(0,0,0,0.12);
  padding-right: 2rem;
}
.layout-newspaper-columns .hero-headline {
  font-family: var(--display-font), serif;
  font-size: clamp(2.6rem, 4.5vw, 4rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 1rem;
}
.layout-newspaper-columns .newspaper-columns-duo {
  columns: 2;
  column-gap: 2rem;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}
.layout-newspaper-columns .sidebar-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.columnist-card {
  border-bottom: 1px solid rgba(0,0,0,0.1);
  padding-bottom: 1.5rem;
}
.columnist-card .author-name {
  font-size: 0.78rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--secondary);
}

/* LAYOUT 4: DATA GEOMETRIC (Strategic Insights Daily) */
.layout-data-grid-geometric {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: var(--border-style);
}
.layout-data-grid-geometric .data-metric-side {
  background: var(--primary);
  color: #FFFFFF;
  padding: 4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.layout-data-grid-geometric .metric-huge {
  font-family: var(--body-font), monospace;
  font-size: clamp(4.5rem, 8vw, 8rem);
  line-height: 0.9;
  font-weight: 600;
  color: var(--secondary);
}
.layout-data-grid-geometric .editorial-side {
  padding: 4rem;
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.layout-data-grid-geometric .hero-headline {
  font-family: var(--display-font), sans-serif;
  font-size: clamp(2.2rem, 3.6vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

/* LAYOUT 5: CONSTRUCTIVIST BOLD (Business Vanguard) */
.layout-constructivist-bold {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  border-bottom: 3px solid var(--primary);
  align-items: stretch;
}
.layout-constructivist-bold .heavy-text-stage {
  padding: 3.5rem 3rem 3.5rem 0;
  border-right: 3px solid var(--primary);
}
.layout-constructivist-bold .hero-headline {
  font-family: var(--display-font), sans-serif;
  font-size: clamp(3rem, 6.5vw, 6.2rem);
  font-weight: 900;
  line-height: 0.92;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  margin-bottom: 2rem;
}
.layout-constructivist-bold .high-contrast-image {
  background: var(--primary);
  overflow: hidden;
  position: relative;
}
.layout-constructivist-bold .high-contrast-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(130%) grayscale(100%);
}

/* ==========================================================================
   ARTICLE & ESSAY FEED STYLES
   ========================================================================== */
.section-header-block {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin: 3.5rem 0 2rem;
  padding-bottom: 0.75rem;
  border-bottom: var(--border-style);
}
.section-title {
  font-family: var(--display-font), serif;
  font-size: 1.8rem;
  font-weight: 600;
}

.article-feed-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
  margin-bottom: 5rem;
}

.editorial-card {
  display: flex;
  flex-direction: column;
}
.editorial-card .card-thumb {
  aspect-ratio: 16 / 10;
  background: var(--bg-secondary);
  border: var(--border-style);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: 1.25rem;
}
.editorial-card .card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.editorial-card:hover .card-thumb img {
  transform: scale(1.03);
}
.editorial-card .kicker {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 0.5rem;
}
.editorial-card .card-title {
  font-family: var(--display-font), serif;
  font-size: 1.45rem;
  line-height: 1.25;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.editorial-card .card-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* FOOTER ARCHITECTURE */
.network-footer {
  margin-top: auto;
  border-top: var(--border-style);
  padding: 3.5rem 0 2.5rem;
  background: var(--bg-secondary);
  font-size: 0.85rem;
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

/* RESPONSIVE ADAPTATIONS */
@media (max-width: 1024px) {
  .layout-split-portrait,
  .layout-asymmetric-overlap .stage-grid,
  .layout-newspaper-columns,
  .layout-data-grid-geometric,
  .layout-constructivist-bold {
    grid-template-columns: 1fr;
  }
  .layout-asymmetric-overlap .content-card-overlap {
    margin-left: 0;
    margin-top: -3rem;
  }
  .layout-constructivist-bold .heavy-text-stage {
    border-right: none;
    border-bottom: 3px solid var(--primary);
    padding-right: 0;
  }
  .article-feed-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .global-nav {
    flex-direction: column;
    gap: 1rem;
  }
  .article-feed-grid {
    grid-template-columns: 1fr;
  }
}