/* ==========================================================================
   ALTRANO - Official Editorial Design System
   Independent Philanthropy Observatory & Global Insights
   v1.0.0 | Pure Monochrome Editorial Standard
   ========================================================================== */

:root {
  /* Color Palette - Light Mode (Default Editorial Canvas) */
  --bg-canvas: #FAF9F6;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F1F5F9;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --border-hairline: #E2E8F0;
  --border-strong: #0F172A;
  --accent-gold: #C5A059;
  --accent-emerald: #059669;
  --accent-slate: #334155;
  --shadow-subtle: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.08);

  /* Typography */
  --font-masthead: 'Cinzel', 'Times New Roman', Georgia, serif;
  --font-editorial: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

  /* Layout */
  --max-width: 1240px;
  --gutter: 24px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

[data-theme="dark"] {
  --bg-canvas: #070D1B;
  --bg-surface: #0E172C;
  --bg-subtle: #16223D;
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border-hairline: #1E2E4E;
  --border-strong: #F8FAFC;
  --accent-gold: #D4AF37;
  --accent-emerald: #10B981;
  --accent-slate: #94A3B8;
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.4);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ==========================================================================
   Utility Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.hairline {
  border: none;
  border-top: 1px solid var(--border-hairline);
  margin: 0;
}

.hairline-double {
  border: none;
  border-top: 3px double var(--border-strong);
  margin: 0;
}

/* ==========================================================================
   Header & Top Utility Bar
   ========================================================================== */

.top-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-hairline);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  padding: 8px 0;
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.top-bar-left, .top-bar-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.indicator-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  margin-right: 6px;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.75rem;
  background: var(--bg-canvas);
  transition: all 0.2s;
}

.theme-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* ==========================================================================
   Masthead
   ========================================================================== */

.site-header {
  background: var(--bg-canvas);
  padding: 30px 0 0 0;
}

.masthead {
  text-align: center;
  padding: 20px 0 25px 0;
}

.masthead-title {
  font-family: var(--font-masthead);
  font-size: clamp(2.8rem, 6vw, 4.4rem);
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.masthead-sub {
  font-family: var(--font-body);
  font-size: clamp(0.72rem, 1.2vw, 0.88rem);
  font-weight: 700;
  letter-spacing: 0.32em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Primary Navigation */
.main-nav {
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  background: var(--bg-surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
  overflow-x: auto;
  padding: 14px 0;
}

.nav-links li a {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  white-space: nowrap;
  position: relative;
  padding: 4px 0;
}

.nav-links li a:hover,
.nav-links li a.active {
  color: var(--text-primary);
}

.nav-links li a.active::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
}

.nav-right {
  display: flex !important;
  align-items: center !important;
  gap: 14px !important;
  flex-shrink: 0 !important;
}

.lang-pill {
  display: inline-flex !important;
  align-items: center !important;
  gap: 3px !important;
  background: var(--bg-canvas) !important;
  border: 1px solid var(--border-hairline) !important;
  border-radius: 20px !important;
  padding: 3px 4px !important;
  font-family: var(--font-mono) !important;
  font-size: 0.72rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.04em !important;
}

.lang-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 4px 9px !important;
  border-radius: 14px !important;
  color: var(--text-muted) !important;
  text-decoration: none !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  line-height: 1 !important;
}

.lang-btn:hover {
  color: var(--text-primary) !important;
}

.lang-btn.active {
  background: var(--text-primary) !important;
  color: var(--bg-canvas) !important;
  font-weight: 800 !important;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 7px 14px;
  background: var(--text-primary);
  color: var(--bg-canvas);
  border-radius: var(--radius-sm);
  transition: opacity 0.2s;
  white-space: nowrap;
}

.nav-cta:hover {
  opacity: 0.9;
}

/* ==========================================================================
   Editorial Hero / The Lede
   ========================================================================== */

.lede-section {
  padding: 40px 0 50px 0;
  border-bottom: 1px solid var(--border-hairline);
}

.lede-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
}

.lede-main {
  display: flex;
  flex-direction: column;
}

.category-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 14px;
}

.lede-title {
  font-family: var(--font-editorial);
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.lede-title a:hover {
  color: var(--accent-slate);
}

.lede-deck {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 22px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-hairline);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lede-takeaways {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-left: 3px solid var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-top: auto;
}

.takeaways-title {
  font-size: 0.78rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.takeaways-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.takeaways-list li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 18px;
  line-height: 1.5;
}

.takeaways-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

/* Sidebar Briefings in Hero */
.lede-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-left: 1px solid var(--border-hairline);
  padding-left: 30px;
}

.sidebar-header {
  font-family: var(--font-masthead);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 8px;
}

.sidebar-card {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-hairline);
}

.sidebar-card:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.sidebar-card-title {
  font-family: var(--font-editorial);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
}

.sidebar-card-title a:hover {
  color: var(--accent-slate);
}

.sidebar-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 10px;
}

/* ==========================================================================
   The Philanthropic Ledger / Data Tracker Module
   ========================================================================== */

.ledger-section {
  padding: 50px 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-hairline);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 12px;
}

.section-head-title {
  font-family: var(--font-masthead);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-head-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.ledger-table th {
  background: var(--bg-subtle);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-hairline);
}

.ledger-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-hairline);
  color: var(--text-secondary);
}

.ledger-table tr:last-child td {
  border-bottom: none;
}

.ledger-table tr:hover td {
  background: rgba(15, 23, 42, 0.02);
}

[data-theme="dark"] .ledger-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.ledger-entity {
  font-weight: 600;
  color: var(--text-primary);
}

.badge-tag {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  color: var(--text-secondary);
}

.badge-verified {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
}

/* ==========================================================================
   Editorial Pillars / Tri-Column Section
   ========================================================================== */

.pillars-section {
  padding: 60px 0;
  border-bottom: 1px solid var(--border-hairline);
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.pillar-column {
  display: flex;
  flex-direction: column;
}

.pillar-header {
  border-top: 2px solid var(--text-primary);
  padding-top: 12px;
  margin-bottom: 20px;
}

.pillar-name {
  font-family: var(--font-masthead);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.pillar-scope {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.pillar-article {
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-hairline);
}

.pillar-article:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.pillar-article-title {
  font-family: var(--font-editorial);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
}

.pillar-article-title a:hover {
  color: var(--accent-slate);
}

.pillar-article-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 10px;
}

/* ==========================================================================
   Editorial Charter Banner
   ========================================================================== */

.charter-banner {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 40px;
  margin: 50px auto;
  max-width: var(--max-width);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: center;
}

.charter-left {
  border-right: 1px solid var(--border-hairline);
  padding-right: 30px;
}

.charter-title {
  font-family: var(--font-masthead);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.charter-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.charter-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.charter-badge-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-subtle);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Executive Briefing Subscription Box
   ========================================================================== */

.newsletter-section {
  padding: 60px 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  text-align: center;
}

.newsletter-box {
  max-width: 620px;
  margin: 0 auto;
}

.newsletter-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 10px;
}

.newsletter-title {
  font-family: var(--font-editorial);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.newsletter-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.newsletter-form {
  display: flex;
  gap: 8px;
  max-width: 480px;
  margin: 0 auto 12px auto;
}

.newsletter-input {
  flex-grow: 1;
  padding: 12px 16px;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--bg-canvas);
  color: var(--text-primary);
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.2s;
}

.newsletter-input:focus {
  border-color: var(--text-primary);
}

.newsletter-submit {
  padding: 12px 22px;
  background: var(--text-primary);
  color: var(--bg-canvas);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: opacity 0.2s;
  white-space: nowrap;
}

.newsletter-submit:hover {
  opacity: 0.9;
}

.newsletter-note {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--bg-canvas);
  padding: 60px 0 30px 0;
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-logo {
  font-family: var(--font-masthead);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  margin-bottom: 4px;
}

.footer-tagline {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-hairline);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-family: var(--font-mono);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 960px) {
  .lede-grid {
    grid-template-columns: 1fr;
  }
  .lede-sidebar {
    border-left: none;
    border-top: 1px solid var(--border-hairline);
    padding-left: 0;
    padding-top: 30px;
  }
  .pillars-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .charter-banner {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .charter-left {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
    padding-right: 0;
    padding-bottom: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .top-bar-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .newsletter-form {
    flex-direction: column;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==========================================================================
   Print & Whitepaper PDF Optimization
   ========================================================================== */

@media print {
  .top-bar, .main-nav, .theme-toggle-btn, .nav-cta, .lang-pill, .site-footer, .filter-bar, .ledger-controls, .export-btns, #theme-toggle {
    display: none !important;
  }
  body {
    background: #FFFFFF !important;
    color: #0F172A !important;
    font-size: 11pt !important;
    line-height: 1.55 !important;
  }
  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }
  .article-header, .site-header, .page-header {
    padding: 12px 0 !important;
    border-bottom: 2px solid #0F172A !important;
  }
  .article-title-large {
    font-size: 22pt !important;
    color: #0F172A !important;
  }
  .article-layout {
    display: block !important;
    padding: 20px 0 !important;
  }
  .article-sidebar {
    display: none !important;
  }
  .pull-quote {
    background: #F8FAFC !important;
    border-left: 3px solid #0F172A !important;
    font-size: 13pt !important;
    page-break-inside: avoid;
  }
  .data-callout {
    border: 1px solid #CBD5E1 !important;
    page-break-inside: avoid;
  }
}