/* ==========================================================================
   FRANK POLICY (electfrank.org) — Modern Editorial & Policy Journal Theme
   Built for 100/100 Core Web Vitals, Pure CSS, Zero Render-Blocking Bloat
   ========================================================================== */

:root {
  --font-serif: "Newsreader", "Merriweather", "Georgia", "Cambria", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --color-navy: #0a192f;
  --color-slate-900: #0f172a;
  --color-slate-800: #1e293b;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-400: #94a3b8;
  --color-slate-200: #e2e8f0;
  --color-slate-100: #f1f5f9;
  --color-slate-50: #f8fafc;
  
  --color-primary: #1d4ed8;
  --color-primary-hover: #1e40af;
  --color-accent: #b45309;
  --color-accent-light: #fef3c7;
  
  --border-subtle: #e2e8f0;
  --border-strong: #cbd5e1;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  --max-w-page: 1200px;
  --max-w-article: 760px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-slate-800);
  background-color: #ffffff;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   TOP BAR & HEADER
   ========================================================================== */

.top-bar {
  background: var(--color-slate-900);
  color: var(--color-slate-400);
  font-size: 0.8rem;
  padding: 0.4rem 1.5rem;
  border-bottom: 1px solid var(--color-slate-800);
}

.top-bar-inner {
  max-width: var(--max-w-page);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-header {
  border-bottom: 2px solid var(--color-slate-900);
  background: #ffffff;
}

.masthead {
  max-width: var(--max-w-page);
  margin: 0 auto;
  padding: 2.2rem 1.5rem 1.8rem;
  text-align: center;
  position: relative;
}

.site-title {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--color-slate-900);
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.site-title a {
  color: inherit;
  text-decoration: none;
}

.site-tagline {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-slate-600);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.nav-bar {
  border-top: 1px solid var(--border-subtle);
  background: var(--color-slate-50);
}

.nav-inner {
  max-width: var(--max-w-page);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  padding: 0 1rem;
  overflow-x: auto;
}

.main-nav {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}

.main-nav a {
  display: block;
  padding: 0.85rem 1.1rem;
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-slate-700);
  border-bottom: 3px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-slate-900);
  text-decoration: none;
  border-bottom-color: var(--color-primary);
  background: #ffffff;
}

/* ==========================================================================
   CONTAINER & LAYOUT
   ========================================================================== */

.container {
  max-width: var(--max-w-page);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

/* ==========================================================================
   HERO / FEATURED ARTICLE
   ========================================================================== */

.hero-feature {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-main {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.8rem;
  align-self: flex-start;
}

.badge-tax { background: #dbeafe; color: #1e40af; }
.badge-tech { background: #fef3c7; color: #92400e; }
.badge-policy { background: #f3e8ff; color: #6b21a8; }
.badge-archive { background: #e2e8f0; color: #334155; }

.hero-title {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  line-height: 1.15;
  font-weight: 800;
  color: var(--color-slate-900);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-title a { color: inherit; }
.hero-title a:hover { color: var(--color-primary); text-decoration: none; }

.hero-excerpt {
  font-size: 1.1rem;
  color: var(--color-slate-600);
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-slate-600);
}

.author-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--color-slate-800);
}

.hero-side {
  background: var(--color-slate-50);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-side-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-slate-900);
  border-bottom: 2px solid var(--color-slate-900);
  padding-bottom: 0.6rem;
  margin-bottom: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.brief-list {
  list-style: none;
}

.brief-item {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.brief-item:last-child {
  border-bottom: none;
}

.brief-link {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-slate-900);
  line-height: 1.35;
  display: block;
  margin-bottom: 0.3rem;
}

.brief-meta {
  font-size: 0.78rem;
  color: var(--color-slate-400);
}

/* ==========================================================================
   ARTICLE CARDS GRID
   ========================================================================== */

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--color-slate-900);
  padding-bottom: 0.6rem;
  margin-bottom: 2rem;
}

.section-heading h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-slate-900);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.article-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  background: #ffffff;
  padding: 1.5rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-slate-900);
  margin: 0.6rem 0 0.8rem;
}

.card-title a { color: inherit; }
.card-title a:hover { color: var(--color-primary); text-decoration: none; }

.card-excerpt {
  font-size: 0.92rem;
  color: var(--color-slate-600);
  line-height: 1.55;
  margin-bottom: 1.2rem;
  flex-grow: 1;
}

/* ==========================================================================
   TOOL / CALLOUT BOX (For Calculator Synergy)
   ========================================================================== */

.tool-callout {
  background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
  border: 1px solid #bfdbfe;
  border-left: 4px solid var(--color-primary);
  border-radius: 6px;
  padding: 1.4rem 1.6rem;
  margin: 2rem 0;
}

.tool-callout-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: #1e3a8a;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-callout-desc {
  font-size: 0.92rem;
  color: var(--color-slate-700);
  margin-bottom: 0.8rem;
  line-height: 1.5;
}

.tool-btn {
  display: inline-block;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.55rem 1.2rem;
  border-radius: 4px;
  transition: background 0.15s ease;
}

.tool-btn:hover {
  background: var(--color-primary-hover);
  color: #ffffff;
  text-decoration: none;
}

/* ==========================================================================
   SINGLE ARTICLE VIEW
   ========================================================================== */

.article-header {
  max-width: var(--max-w-article);
  margin: 0 auto 2.5rem;
  text-align: center;
}

.article-header h1 {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1.18;
  color: var(--color-slate-900);
  margin: 0.8rem 0 1.2rem;
  letter-spacing: -0.02em;
}

.article-header .lead {
  font-size: 1.2rem;
  color: var(--color-slate-600);
  line-height: 1.6;
}

.article-body {
  max-width: var(--max-w-article);
  margin: 0 auto;
  font-size: 1.08rem;
  line-height: 1.8;
  color: #1e293b;
}

.article-body p {
  margin-bottom: 1.6rem;
}

.article-body p.intro::first-letter {
  font-family: var(--font-serif);
  font-size: 4.2rem;
  float: left;
  line-height: 0.8;
  margin-right: 0.6rem;
  margin-top: 0.2rem;
  font-weight: 900;
  color: var(--color-slate-900);
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-slate-900);
  margin: 2.8rem 0 1.2rem;
  line-height: 1.25;
}

.article-body h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-slate-900);
  margin: 2.2rem 0 0.8rem;
}

.article-body ul, .article-body ol {
  margin: 1.2rem 0 1.8rem 1.8rem;
}

.article-body li {
  margin-bottom: 0.6rem;
}

.article-body blockquote {
  border-left: 3px solid var(--color-slate-900);
  padding: 0.8rem 1.5rem;
  margin: 2rem 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--color-slate-700);
  background: var(--color-slate-50);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background: var(--color-slate-900);
  color: var(--color-slate-400);
  padding: 3.5rem 1.5rem 2rem;
  margin-top: 4rem;
  border-top: 3px solid var(--color-slate-800);
}

.footer-inner {
  max-width: var(--max-w-page);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-slate-800);
}

.footer-col h4 {
  font-family: var(--font-serif);
  color: #ffffff;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--color-slate-400);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  max-width: var(--max-w-page);
  margin: 1.5rem auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 900px) {
  .hero-feature {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .site-title {
    font-size: 2.3rem;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .article-header h1 {
    font-size: 2.1rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 0.8rem;
    text-align: center;
  }
}