/* ============================================================
   KineticMetrix — Glass UI Design System
   ============================================================ */

/* Inter — self-hosted variable font (latin + latin-ext subsets) */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300 800;
  font-display: swap;
  src: url('/fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
                 U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF,
                 U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300 800;
  font-display: swap;
  src: url('/fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
                 U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122,
                 U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---- Custom Properties ---- */
:root {
  --bg: #0A0F1C;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-bg-hover: rgba(255, 255, 255, 0.07);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(59, 130, 246, 0.4);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  --glass-shadow-hover: 0 20px 60px rgba(59, 130, 246, 0.2), 0 8px 32px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.08);

  --text-primary: #F9FAFB;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;

  --blue: #3B82F6;
  --blue-glow: #60A5FA;
  --blue-dark: rgba(30, 58, 95, 0.5);
  --orange: #F97316;
  --orange-glow: #FB923C;
  --green: #22C55E;
  --yellow: #EAB308;
  --red: #EF4444;
  --purple: #8B5CF6;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

/* ---- Animated Background Orbs ---- */
.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
  animation: orb-float 30s infinite ease-in-out;
}
.orb-1 {
  width: 700px; height: 700px;
  background: radial-gradient(circle, var(--blue), transparent 70%);
  top: -300px; left: -300px;
  animation-duration: 32s;
}
.orb-2 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--orange), transparent 70%);
  bottom: -250px; right: -200px;
  animation-delay: -12s;
  animation-duration: 28s;
}
.orb-3 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--purple), transparent 70%);
  top: 35%; left: 38%;
  animation-delay: -20s;
  animation-duration: 24s;
}
@keyframes orb-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25%       { transform: translate(50px, -60px) scale(1.06); }
  50%       { transform: translate(-30px, 40px) scale(0.96); }
  75%       { transform: translate(-50px, -30px) scale(1.03); }
}

/* ---- Layout ---- */
.site-wrapper {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---- Glass Utilities ---- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
}
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal),
              border-color var(--transition-normal), background var(--transition-normal);
}
.glass-card:hover {
  background: var(--glass-bg-hover);
  box-shadow: var(--glass-shadow-hover);
  border-color: var(--glass-border-hover);
}

/* ---- Navigation ---- */
.navbar {
  position: sticky;
  top: 0; z-index: 100;
  background: rgba(10, 15, 28, 0.75);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0 24px;
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.2rem; font-weight: 700;
  color: var(--text-primary);
}
.logo-kinetic { color: var(--blue); }
.logo-metrix  { color: var(--text-primary); font-weight: 400; }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a {
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-mobile-toggle {
  display: none; background: none; border: none;
  color: var(--text-primary); cursor: pointer; padding: 8px;
}
.mobile-nav {
  display: none;
  position: fixed; top: 64px; left: 0; right: 0; bottom: 0;
  background: rgba(10, 15, 28, 0.97);
  backdrop-filter: blur(20px);
  z-index: 99;
  padding: 32px 24px;
  flex-direction: column; gap: 24px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1.25rem; font-weight: 600;
  color: var(--text-secondary);
  padding: 12px 0;
  border-bottom: 1px solid var(--glass-border);
  transition: color var(--transition-fast);
}
.mobile-nav a:hover { color: var(--text-primary); }

/* ---- Hero ---- */
.hero { padding: 72px 0 48px; text-align: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--blue-dark);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.7rem; font-weight: 700;
  color: var(--blue-glow);
  text-transform: uppercase; letter-spacing: 0.12em;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 800; line-height: 1.08;
  margin-bottom: 20px;
  background: linear-gradient(140deg, #fff 0%, var(--blue-glow) 40%, var(--orange-glow) 80%, #fff 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 540px; margin: 0 auto 40px;
  line-height: 1.75;
}
.hero-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--blue), #2563EB);
  border: none; border-radius: var(--radius-sm);
  padding: 14px 28px;
  font-size: 1rem; font-weight: 600;
  color: white; cursor: pointer;
  box-shadow: 0 4px 24px rgba(59, 130, 246, 0.4);
  transition: all var(--transition-normal);
  text-decoration: none;
}
.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 36px rgba(59, 130, 246, 0.55);
}
.hero-stats {
  display: flex; justify-content: center; gap: 56px;
  margin-top: 52px;
}
.stat-item { text-align: center; }
.stat-value { font-size: 2.25rem; font-weight: 700; color: var(--orange); display: block; }
.stat-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }

/* ---- Filter Tabs ---- */
.filter-section { padding: 32px 0 16px; }
.filter-tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-tab {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-secondary); cursor: pointer;
  transition: all var(--transition-normal);
  backdrop-filter: blur(8px);
}
.filter-tab:hover { color: var(--text-primary); border-color: rgba(59, 130, 246, 0.3); }
.filter-tab.active {
  background: var(--blue); border-color: var(--blue);
  color: white; box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

/* ---- Calculator Grid (Home Page) ---- */
.calc-grid-section { padding-bottom: 72px; }
.section-label {
  font-size: 0.72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--text-muted); margin-bottom: 20px;
}
.calc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.calc-tile {
  padding: 24px; cursor: pointer;
  display: block; text-decoration: none; color: inherit;
  transform: translateY(0);
}
.calc-tile:hover { transform: translateY(-4px); }
.calc-tile-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 16px;
}
.icon-body        { background: rgba(59,  130, 246, 0.12); }
.icon-performance { background: rgba(249, 115,  22, 0.12); }
.icon-nutrition   { background: rgba(34,  197,  94, 0.12); }
.icon-longevity   { background: rgba(139,  92, 246, 0.12); }

.calc-tile-name  { font-size: 1rem;    font-weight: 600; color: var(--text-primary);   margin-bottom: 6px; }
.calc-tile-desc  { font-size: 0.8rem;  color: var(--text-secondary); line-height: 1.5; margin-bottom: 16px; }
.calc-tile-tag {
  display: inline-block;
  font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 3px 10px; border-radius: 100px;
}
.tag-body        { background: rgba(59,  130, 246, 0.12); color: var(--blue-glow); }
.tag-performance { background: rgba(249, 115,  22, 0.12); color: var(--orange-glow); }
.tag-nutrition   { background: rgba(34,  197,  94, 0.12); color: var(--green); }
.tag-longevity   { background: rgba(139,  92, 246, 0.12); color: #A78BFA; }

.calc-tile.hidden { display: none; }

/* ---- Ad Slot Placeholders ---- */
.ad-slot {
  background: rgba(255, 255, 255, 0.015);
  border: 1px dashed rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  display: none !important; align-items: center; justify-content: center;
  color: var(--text-muted);
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em;
}
/* When AdSense is live, change .ad-slot display back to flex */
.ad-leaderboard { height: 90px;  margin: 32px 0; }
.ad-rectangle   { height: 250px; margin: 20px 0; }

/* ---- Calculator Page Layout ---- */
.calc-page { flex: 1; padding: 40px 0; }
.back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-secondary); font-size: 0.875rem; font-weight: 500;
  margin-bottom: 32px;
  transition: color var(--transition-fast);
}
.back-link:hover { color: var(--blue-glow); }

.calc-header { margin-bottom: 36px; }
.category-tag {
  display: inline-block;
  font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  padding: 4px 12px; border-radius: 100px;
  margin-bottom: 14px;
}
.calc-header h1 {
  font-size: 2.25rem; font-weight: 700;
  margin-bottom: 14px; line-height: 1.2;
}
.calc-header .calc-desc {
  font-size: 1rem; color: var(--text-secondary);
  max-width: 620px; line-height: 1.75;
}

.calc-layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 24px; margin-bottom: 24px;
}

/* ---- Input Panel ---- */
.inputs-panel { padding: 28px; }
.panel-label {
  font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--text-muted); margin-bottom: 24px;
}
.input-group  { margin-bottom: 20px; }
.input-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.input-header label {
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-secondary);
}
.unit-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px; padding: 2px; gap: 2px;
}
.unit-btn {
  background: none; border: none;
  padding: 3px 10px; border-radius: 5px;
  font-size: 0.72rem; font-weight: 600;
  color: var(--text-muted); cursor: pointer;
  transition: all var(--transition-fast);
  font-family: 'Inter', sans-serif;
}
.unit-btn.active { background: var(--blue); color: white; }

.glass-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.9375rem; font-weight: 500;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}
.glass-input:focus {
  border-color: var(--blue);
  background: rgba(59, 130, 246, 0.05);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.glass-input::placeholder { color: var(--text-muted); font-weight: 400; }

.glass-select {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px 40px 12px 16px;
  font-size: 0.9375rem; font-weight: 500;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  outline: none; cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1L6 7L11 1' stroke='%236B7280' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  transition: border-color var(--transition-fast);
}
.glass-select:focus { border-color: var(--blue); }
.glass-select option { background: #111827; color: var(--text-primary); }

.radio-group { display: flex; gap: 8px; }
.radio-option { flex: 1; }
.radio-option input[type="radio"] { display: none; }
.radio-label {
  display: block; text-align: center;
  padding: 10px 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-secondary); cursor: pointer;
  transition: all var(--transition-normal);
}
.radio-option input[type="radio"]:checked + .radio-label {
  background: var(--blue-dark);
  border-color: var(--blue);
  color: var(--blue-glow);
}
.radio-label:hover { border-color: rgba(59, 130, 246, 0.3); color: var(--text-primary); }

.input-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 6px; }

.btn-calculate {
  width: 100%; margin-top: 20px;
  background: linear-gradient(135deg, var(--blue), #2563EB);
  border: none; border-radius: var(--radius-sm);
  padding: 14px;
  font-size: 1rem; font-weight: 600;
  color: white; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
  font-family: 'Inter', sans-serif;
  transition: all var(--transition-normal);
}
.btn-calculate:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.5);
}
.btn-calculate:active { transform: translateY(0); }

/* ---- Results Panel ---- */
.results-panel { padding: 28px; display: flex; flex-direction: column; }

.result-placeholder {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  min-height: 220px;
  color: var(--text-muted); text-align: center;
  gap: 12px;
}
.result-placeholder-icon { font-size: 3rem; opacity: 0.25; margin-bottom: 4px; }
.result-placeholder p { font-size: 0.875rem; line-height: 1.6; max-width: 200px; }

.result-display { flex: 1; }
.result-main {
  text-align: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 20px;
}
.result-value {
  font-size: 4rem; font-weight: 700;
  color: var(--orange); line-height: 1;
  display: block; margin-bottom: 4px;
}
.result-unit { font-size: 1.25rem; color: var(--text-muted); font-weight: 400; }
.result-category {
  font-size: 0.875rem; font-weight: 600;
  color: var(--text-secondary); margin-top: 8px;
}

/* Gauge */
.gauge-wrap { margin: 20px 0 4px; }
.gauge-bar {
  position: relative; height: 10px;
  border-radius: 100px;
  background: linear-gradient(to right,
    rgba(59,130,246,0.4),
    rgba(34,197,94,0.5),
    rgba(234,179,8,0.5),
    rgba(239,68,68,0.4));
  margin-bottom: 10px;
}
.gauge-fill {
  position: absolute; top: 0; left: 0; height: 100%;
  border-radius: 100px;
  background: linear-gradient(to right, var(--blue), var(--green));
}
.gauge-marker {
  position: absolute; top: 50%;
  transform: translate(-50%, -50%);
  width: 20px; height: 20px;
  background: white; border-radius: 50%;
  border: 3px solid var(--orange);
  box-shadow: 0 0 12px rgba(249,115,22,0.6);
  z-index: 1;
}
.gauge-zone-label {
  text-align: center; font-size: 0.875rem;
  font-weight: 600; color: var(--orange-glow);
  margin-top: 4px;
}
.gauge-range-labels {
  display: flex; justify-content: space-between;
  font-size: 0.68rem; color: var(--text-muted);
  margin-bottom: 6px;
}

/* Secondary rows */
.result-rows { display: flex; flex-direction: column; gap: 2px; margin-top: 4px; }
.result-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.result-row:last-child { border-bottom: none; }
.result-row-label { font-size: 0.8125rem; color: var(--text-secondary); }
.result-row-value { font-size: 0.9375rem; font-weight: 600; color: var(--text-primary); }

/* Zones table */
.zones-table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 0.8125rem; }
.zones-table th {
  text-align: left; padding: 8px 12px;
  font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--glass-border);
}
.zones-table td { padding: 10px 12px; color: var(--text-secondary); }
.zones-table tr.active-row td { background: rgba(59,130,246,0.08); color: var(--text-primary); }
.zones-table tr.active-row td:first-child { color: var(--blue-glow); font-weight: 600; }

/* ---- Info Sections ---- */
.info-card { padding: 28px; margin-bottom: 20px; }
.info-card h2 {
  font-size: 1.0625rem; font-weight: 600;
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.info-card p {
  font-size: 0.9375rem; color: var(--text-secondary);
  line-height: 1.8; margin-bottom: 14px;
}
.info-card p:last-child { margin-bottom: 0; }

/* Methodology */
.methodology-card { padding: 0; overflow: hidden; margin-bottom: 20px; }
.methodology-toggle {
  width: 100%; background: none; border: none;
  padding: 20px 28px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; color: var(--text-primary);
  font-size: 0.9375rem; font-weight: 600;
  font-family: 'Inter', sans-serif;
  transition: background var(--transition-fast);
}
.methodology-toggle:hover { background: rgba(255,255,255,0.02); }
.toggle-icon { font-size: 1.1rem; transition: transform var(--transition-normal); }
.methodology-toggle.open .toggle-icon { transform: rotate(90deg); }
.methodology-body {
  padding: 0 28px 28px;
  border-top: 1px solid var(--glass-border);
  display: none;
}
.methodology-body.open { display: block; }

.formula-block {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 16px; margin: 16px 0;
  font-size: 0.875rem; color: var(--text-secondary); line-height: 1.9;
}
.source-card {
  background: rgba(255,255,255,0.025);
  border-radius: var(--radius-sm);
  padding: 14px 16px; margin-bottom: 10px;
}
.source-title { font-size: 0.875rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.source-meta  { font-size: 0.8rem;   color: var(--text-muted); line-height: 1.6; }
.source-meta a { color: var(--blue-glow); }

.confidence-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 100px;
  font-size: 0.72rem; font-weight: 700;
  margin-top: 14px; letter-spacing: 0.04em;
}
.badge-strong   { background: rgba(34, 197, 94, 0.12); color: var(--green); }
.badge-moderate { background: rgba(234,179,  8, 0.12); color: var(--yellow); }

.limitations-title { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); margin: 14px 0 6px; text-transform: uppercase; letter-spacing: 0.06em; }
.limitations-text  { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; }

/* ---- Affiliate ---- */
.affiliate-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
.affiliate-card {
  padding: 14px 16px;
  display: flex; align-items: center; gap: 14px;
  cursor: pointer;
}
.affiliate-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
}
.affiliate-name { font-size: 0.8125rem; font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }
.affiliate-link { font-size: 0.75rem; color: var(--blue-glow); }

/* ---- Related Calculators ---- */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 14px; }
.related-tile { padding: 16px; display: block; color: inherit; }
.related-tile-icon { font-size: 1.25rem; margin-bottom: 8px; }
.related-tile-name { font-size: 0.875rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.related-tile-desc { font-size: 0.75rem; color: var(--text-secondary); line-height: 1.4; }

/* ---- Footer ---- */
footer {
  border-top: 1px solid var(--glass-border);
  background: rgba(10,15,28,0.6);
  backdrop-filter: blur(12px);
  padding: 24px;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.footer-links { display: flex; gap: 28px; list-style: none; }
.footer-links a { font-size: 0.8rem; color: var(--text-muted); transition: color var(--transition-fast); }
.footer-links a:hover { color: var(--text-secondary); }
.footer-copy { font-size: 0.8rem; color: var(--text-muted); }
.footer-disclaimer {
  width: 100%; font-size: 0.72rem; color: var(--text-muted);
  border-top: 1px solid rgba(255,255,255,0.04);
  padding-top: 16px; margin-top: 4px; line-height: 1.6;
}

/* Rich footer (homepage) */
.footer-rich {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  align-items: start;
  gap: 32px;
}
.footer-brand { display: flex; flex-direction: column; }
.footer-tagline { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; max-width: 320px; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col-title { font-size: 0.7rem; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px; }
.footer-col a { font-size: 0.8rem; color: var(--text-muted); transition: color var(--transition-fast); }
.footer-col a:hover { color: var(--text-secondary); }
.footer-rich .footer-disclaimer { grid-column: 1 / -1; }
@media (max-width: 640px) {
  .footer-rich { grid-template-columns: 1fr; text-align: center; }
  .footer-tagline { max-width: none; }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .calc-grid    { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .calc-layout   { grid-template-columns: 1fr; }
  .affiliate-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 32px; }
  .hero-title { font-size: clamp(2rem, 5vw, 3rem); padding: 0 8px; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .calc-grid    { grid-template-columns: 1fr; }
  .hero-stats   { flex-direction: column; gap: 20px; }
  .related-grid { grid-template-columns: 1fr; }
  .filter-tabs  { overflow-x: auto; flex-wrap: nowrap; padding-bottom: 8px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 16px; }
}

/* ============================================================
   Blog & Article Styles
   ============================================================ */

/* ---- Blog Hero (listing page) ---- */
.blog-hero { padding: 64px 0 40px; text-align: center; }
.blog-hero-eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(249, 115, 22, 0.1);
  border: 1px solid rgba(249, 115, 22, 0.25);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.7rem; font-weight: 700;
  color: var(--orange-glow);
  text-transform: uppercase; letter-spacing: 0.12em;
  margin-bottom: 20px;
}
.blog-hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800; line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(140deg, #fff 0%, var(--orange-glow) 60%, var(--blue-glow) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.blog-hero p {
  font-size: 1.0625rem; color: var(--text-secondary);
  max-width: 500px; margin: 0 auto; line-height: 1.75;
}

/* ---- Post Grid (listing page) ---- */
.blog-grid-section { padding-bottom: 72px; }
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.post-card {
  padding: 24px; display: block;
  color: inherit; text-decoration: none;
  transform: translateY(0);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal),
              border-color var(--transition-normal), background var(--transition-normal);
}
.post-card:hover { transform: translateY(-4px); }
.post-card-category {
  font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 12px; display: inline-block;
}
.post-card-title {
  font-size: 1rem; font-weight: 600;
  color: var(--text-primary); line-height: 1.4;
  margin-bottom: 10px;
}
.post-card-excerpt {
  font-size: 0.8125rem; color: var(--text-secondary);
  line-height: 1.6; margin-bottom: 16px;
}
.post-card-meta {
  font-size: 0.72rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 12px;
}
.post-card-meta span { display: flex; align-items: center; gap: 4px; }

/* ---- Article Layout ---- */
.article-page { flex: 1; padding: 40px 0 72px; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 720px) 280px;
  gap: 40px;
  align-items: start;
}
.article-content { min-width: 0; }
.article-sidebar {
  position: sticky;
  top: 88px;
}

/* ---- Breadcrumb ---- */
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8rem; color: var(--text-muted);
  margin-bottom: 28px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); transition: color var(--transition-fast); }
.breadcrumb a:hover { color: var(--blue-glow); }
.breadcrumb-sep { color: var(--text-muted); opacity: 0.4; }
.breadcrumb span:last-child { color: var(--text-secondary); }

/* ---- Article Header ---- */
.article-header { margin-bottom: 32px; }
.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800; line-height: 1.15;
  margin-bottom: 20px;
}
.article-meta {
  display: flex; align-items: center; gap: 20px;
  flex-wrap: wrap;
  font-size: 0.8125rem; color: var(--text-muted);
  padding: 14px 0;
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 8px;
}
.article-meta-item { display: flex; align-items: center; gap: 6px; }

/* ---- Article Body Typography ---- */
.article-body { font-size: 0.9375rem; color: var(--text-secondary); line-height: 1.85; }
.article-body h2 {
  font-size: 1.375rem; font-weight: 700;
  color: var(--text-primary);
  margin: 36px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--glass-border);
}
.article-body h3 {
  font-size: 1.125rem; font-weight: 600;
  color: var(--text-primary); margin: 24px 0 10px;
}
.article-body p { margin-bottom: 18px; }
.article-body p:last-child { margin-bottom: 0; }
.article-body ul, .article-body ol {
  padding-left: 24px; margin-bottom: 18px;
}
.article-body li { margin-bottom: 8px; line-height: 1.75; }
.article-body strong { color: var(--text-primary); font-weight: 600; }
.article-body a { color: var(--blue-glow); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: white; }
.article-body blockquote {
  border-left: 3px solid var(--blue);
  padding: 12px 20px;
  background: rgba(59, 130, 246, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 20px 0;
  font-style: italic; color: var(--text-secondary);
}

/* ---- Calculator CTA Box ---- */
.calculator-cta {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.1), rgba(249, 115, 22, 0.04));
  border: 1px solid rgba(249, 115, 22, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 32px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  flex-wrap: wrap;
}
.calculator-cta-text h3 {
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary); margin-bottom: 4px;
}
.calculator-cta-text p {
  font-size: 0.8125rem; color: var(--text-secondary);
  line-height: 1.5; margin: 0;
}
.calculator-cta-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--orange), #EA580C);
  border: none; border-radius: var(--radius-sm);
  padding: 12px 24px;
  font-size: 0.9375rem; font-weight: 600;
  color: white; text-decoration: none; white-space: nowrap;
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.35);
  transition: all var(--transition-normal);
  flex-shrink: 0;
}
.calculator-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(249, 115, 22, 0.5);
  color: white;
  text-decoration: none;
}

/* ---- Key Takeaways ---- */
.takeaways-box {
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin: 32px 0;
}
.takeaways-box h3 {
  font-size: 0.875rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--blue-glow); margin-bottom: 12px;
}
.takeaways-box ul { padding-left: 20px; margin: 0; }
.takeaways-box li {
  font-size: 0.9rem; color: var(--text-secondary);
  margin-bottom: 8px; line-height: 1.6;
}
.takeaways-box li:last-child { margin-bottom: 0; }

/* ---- Sources List ---- */
.sources-list {
  list-style: decimal;
  padding-left: 24px;
  margin: 0;
}
.sources-list li {
  font-size: 0.8125rem; color: var(--text-muted);
  line-height: 1.7; margin-bottom: 10px;
}
.sources-list a { color: var(--blue-glow); }

/* ---- Post Tags ---- */
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0; }
.post-tag {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 4px 14px;
  font-size: 0.72rem; font-weight: 500;
  color: var(--text-muted);
}

/* ---- Related Posts (2-up at bottom of article) ---- */
.related-posts { margin-top: 8px; }
.related-posts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 14px;
}
.related-post-card {
  padding: 20px; display: block;
  color: inherit; text-decoration: none;
}
.related-post-card:hover { transform: translateY(-3px); }
.related-post-cat {
  font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 8px; display: block;
}
.related-post-title {
  font-size: 0.9rem; font-weight: 600;
  color: var(--text-primary); line-height: 1.4;
}

/* ---- Sidebar ---- */
.sidebar-card { padding: 20px; margin-bottom: 16px; }
.sidebar-card h3 {
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-muted); margin-bottom: 14px;
}
.sidebar-calc-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary); font-size: 0.8125rem;
  font-weight: 500; text-decoration: none;
  transition: all var(--transition-fast); margin-bottom: 8px;
}
.sidebar-calc-link:hover {
  border-color: rgba(59,130,246,0.3);
  color: var(--text-primary); background: rgba(59,130,246,0.06);
}
.sidebar-calc-link:last-child { margin-bottom: 0; }

/* ---- TOC (collapsible) ---- */
.toc { padding: 0; overflow: hidden; }
.toc-toggle {
  width: 100%; background: none; border: none;
  padding: 16px 20px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; color: var(--text-primary);
  font-size: 0.875rem; font-weight: 600;
  font-family: 'Inter', sans-serif;
}
.toc-toggle:hover { background: rgba(255,255,255,0.02); }
.toc-body {
  padding: 0 20px 16px;
  border-top: 1px solid var(--glass-border);
  display: none;
}
.toc-body.open { display: block; }
.toc-list { list-style: none; padding: 0; margin: 12px 0 0; }
.toc-list li { margin-bottom: 8px; }
.toc-list a {
  font-size: 0.8125rem; color: var(--text-muted);
  transition: color var(--transition-fast);
}
.toc-list a:hover { color: var(--blue-glow); }

/* ---- Guide Callout (on calculator pages) ---- */
.guide-callout {
  display: flex; align-items: center; gap: 12px;
  background: rgba(59, 130, 246, 0.06);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  margin-top: 12px;
  font-size: 0.8125rem;
}
.guide-callout-icon { font-size: 1rem; flex-shrink: 0; }
.guide-callout a { color: var(--blue-glow); font-weight: 500; }
.guide-callout a:hover { text-decoration: underline; }
.guide-callout-label { color: var(--text-muted); margin-right: 4px; }

/* ---- From the Blog (home page section) ---- */
.blog-preview-section { padding-bottom: 72px; }
.blog-preview-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.blog-preview-header .section-label { margin-bottom: 0; }
.blog-preview-header a {
  font-size: 0.8125rem; font-weight: 500;
  color: var(--blue-glow);
  display: flex; align-items: center; gap: 4px;
  transition: gap var(--transition-fast);
}
.blog-preview-header a:hover { gap: 8px; }
.blog-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ---- Blog Responsive ---- */
@media (max-width: 1024px) {
  .post-grid          { grid-template-columns: repeat(2, 1fr); }
  .article-layout     { grid-template-columns: 1fr; }
  .article-sidebar    { position: static; }
  .blog-preview-grid  { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .calculator-cta     { flex-direction: column; align-items: flex-start; }
  .related-posts-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .post-grid          { grid-template-columns: 1fr; }
  .blog-preview-grid  { grid-template-columns: 1fr; }
}

/* ---- Cookie Consent Banner ---- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: rgba(17, 24, 39, 0.97);
  border-top: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(12px);
  transform: translateY(100%);
  transition: transform 300ms ease;
  padding: 16px 24px;
}
.cookie-banner--visible { transform: translateY(0); }
.cookie-banner-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cookie-text {
  flex: 1;
  font-size: 0.875rem;
  color: var(--text-secondary);
  min-width: 200px;
}
.cookie-text a { color: var(--blue); }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-btn {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity var(--transition-fast);
}
.cookie-btn:hover { opacity: 0.85; }
.cookie-accept {
  background: var(--blue);
  color: #fff;
}
.cookie-decline {
  background: rgba(255,255,255,0.08);
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.12);
}

/* Footer reading list strip */
.footer-books {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 16px;
  padding: 12px 0 8px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
}
.footer-books-label {
  color: var(--text-secondary);
  font-weight: 600;
  white-space: nowrap;
}
.footer-books a {
  color: var(--blue-primary);
  text-decoration: none;
  white-space: nowrap;
}
.footer-books a:hover { text-decoration: underline; }
.footer-books-disclosure {
  color: var(--text-muted);
  font-size: 0.72rem;
  margin-left: auto;
  font-style: italic;
}

/* ---- Affiliate Disclosure ---- */
.affiliate-disclosure {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}