/*
Theme Name: CalcHub Pro
Theme URI: https://www.calchub.website
Author: CalcHub
Description: Premium calculator & blog WordPress theme. Editorial magazine style with bold typography, rich card layouts, and full mobile responsiveness.
Version: 2.0.0
License: GNU General Public License v2 or later
Text Domain: calchub
*/

/* =============================================
   DESIGN TOKENS
   ============================================= */
:root {
  /* Colors */
  --ink:        #0d1117;
  --ink-soft:   #1c2333;
  --ink-muted:  #4a5568;
  --paper:      #ffffff;
  --paper-warm: #fafaf8;
  --paper-tint: #f3f4f6;
  --accent:     #2563eb;
  --accent-hov: #1d4ed8;
  --accent-tint:#eff6ff;
  --accent-glow:rgba(37,99,235,0.12);
  --gold:       #f59e0b;
  --gold-tint:  #fffbeb;
  --green:      #10b981;
  --red:        #ef4444;
  --border:     #e5e7eb;
  --border-dark:#d1d5db;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* Radius */
  --r-sm:  6px;
  --r-md:  12px;
  --r-lg:  20px;
  --r-xl:  28px;
  --r-full:9999px;

  /* Shadows */
  --sh-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --sh-md:  0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --sh-lg:  0 12px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.05);
  --sh-xl:  0 24px 64px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.06);
  --sh-accent: 0 8px 32px rgba(37,99,235,0.20);

  /* Transitions */
  --ease:      cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast:  150ms;
  --dur-base:  250ms;
  --dur-slow:  400ms;

  /* Layout */
  --max-w:     1200px;
  --max-w-prose: 760px;
}

/* =============================================
   RESET
   ============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

/* =============================================
   TYPOGRAPHY
   ============================================= */
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--ink);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }
h5 { font-size: 1rem; }
p  { color: var(--ink-muted); line-height: 1.75; }

/* =============================================
   UTILITIES
   ============================================= */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--space-lg); }
.container--prose { max-width: var(--max-w-prose); margin: 0 auto; padding: 0 var(--space-lg); }
.section { padding: var(--space-3xl) 0; }
.section--sm { padding: var(--space-2xl) 0; }
.section--xs { padding: var(--space-xl) 0; }

.tag {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; padding: 4px 10px;
  border-radius: var(--r-full);
}
.tag--accent { background: var(--accent-tint); color: var(--accent); }
.tag--gold   { background: var(--gold-tint); color: #92400e; }
.tag--green  { background: #ecfdf5; color: #065f46; }
.tag--muted  { background: var(--paper-tint); color: var(--ink-muted); }

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--accent); margin-bottom: var(--space-sm);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--r-full);
  font-family: var(--font-body); font-weight: 600; font-size: 0.9rem;
  border: 2px solid transparent; transition: all var(--dur-base) var(--ease);
  white-space: nowrap; line-height: 1;
}
.btn--primary {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-hov); border-color: var(--accent-hov);
  transform: translateY(-2px); box-shadow: var(--sh-accent);
}
.btn--outline {
  background: transparent; color: var(--accent); border-color: var(--accent);
}
.btn--outline:hover {
  background: var(--accent); color: #fff;
  transform: translateY(-2px);
}
.btn--ghost {
  background: transparent; color: var(--ink-muted); border-color: var(--border);
}
.btn--ghost:hover { background: var(--paper-tint); color: var(--ink); }
.btn--gold {
  background: var(--gold); color: var(--ink); border-color: var(--gold);
}
.btn--gold:hover { background: #d97706; transform: translateY(-2px); }
.btn--sm { padding: 8px 18px; font-size: 0.82rem; }
.btn--lg { padding: 16px 36px; font-size: 1rem; }
.btn--full { width: 100%; }
.btn--icon { padding: 10px; border-radius: var(--r-md); }

/* =============================================
   HEADER
   ============================================= */
#site-header {
  position: sticky; top: 0; z-index: 900;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--dur-base) var(--ease);
}
#site-header.scrolled { box-shadow: var(--sh-md); }

.header-inner {
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 16px 0; gap: var(--space-lg);
}

/* Logo */
.site-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: 1.4rem; font-weight: 800;
  color: var(--ink); letter-spacing: -0.03em; flex-shrink: 0;
}
.site-logo__icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--accent); display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1rem;
}
.site-logo__text em { color: var(--accent); font-style: normal; }

/* Nav */
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav__item { position: relative; }
.site-nav__link {
  display: flex; align-items: center; gap: 4px;
  padding: 8px 14px; border-radius: var(--r-md);
  font-size: 0.875rem; font-weight: 600; color: var(--ink-muted);
  transition: all var(--dur-fast) var(--ease);
}
.site-nav__link:hover, .site-nav__link.active {
  color: var(--accent); background: var(--accent-tint);
}

/* Dropdown */
.nav-dropdown {
  position: absolute; top: calc(100% + 8px); left: 0;
  background: var(--paper); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: var(--space-sm);
  min-width: 220px; box-shadow: var(--sh-lg);
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(8px);
  transition: all var(--dur-base) var(--ease);
  z-index: 100;
}
.site-nav__item:hover .nav-dropdown,
.site-nav__item:focus-within .nav-dropdown {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0);
}
.nav-dropdown__link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--r-sm);
  font-size: 0.875rem; font-weight: 500; color: var(--ink-muted);
  transition: all var(--dur-fast) var(--ease);
}
.nav-dropdown__link:hover { background: var(--accent-tint); color: var(--accent); }
.nav-dropdown__link .icon { font-size: 1.1rem; flex-shrink: 0; }
.nav-dropdown__divider { height: 1px; background: var(--border); margin: 4px 0; }

/* Header CTA */
.header-cta { display: flex; align-items: center; gap: var(--space-sm); }

/* Mobile toggle */
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 8px; width: 40px; height: 40px;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block; width: 20px; height: 2px;
  background: var(--ink); border-radius: 2px;
  transition: all var(--dur-base) var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* =============================================
   HERO — HOMEPAGE
   ============================================= */
.hero {
  background: var(--ink);
  padding: var(--space-3xl) 0;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(37,99,235,0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 30%, rgba(245,158,11,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.025'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.hero__inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl); align-items: center;
}
.hero__content {}
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.08); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.8); font-size: 0.8rem; font-weight: 600;
  padding: 6px 14px; border-radius: var(--r-full);
  margin-bottom: var(--space-lg);
}
.hero__title {
  color: #fff; font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 1.08; margin-bottom: var(--space-lg);
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero__desc {
  color: rgba(255,255,255,0.65); font-size: 1.05rem;
  max-width: 480px; margin-bottom: var(--space-xl);
}
.hero__actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.hero__stats {
  display: flex; gap: var(--space-xl); margin-top: var(--space-xl);
  padding-top: var(--space-xl); border-top: 1px solid rgba(255,255,255,0.1);
}
.hero__stat-num {
  font-family: var(--font-display); font-size: 1.8rem; font-weight: 800;
  color: #fff; line-height: 1;
}
.hero__stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.5); margin-top: 4px; }

/* Hero calculator preview */
.hero__visual {
  position: relative;
}
.hero__calc-preview {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--r-xl); padding: var(--space-xl);
  backdrop-filter: blur(12px);
}
.hero__calc-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.mini-calc-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-lg); padding: var(--space-lg);
  text-align: center; transition: all var(--dur-base) var(--ease);
  cursor: pointer;
}
.mini-calc-card:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(37,99,235,0.5);
  transform: translateY(-4px);
}
.mini-calc-card__icon { font-size: 2rem; margin-bottom: var(--space-sm); }
.mini-calc-card__name {
  font-family: var(--font-display); font-size: 0.85rem;
  font-weight: 700; color: rgba(255,255,255,0.85);
}

/* =============================================
   SECTION HEADERS
   ============================================= */
.section-head { margin-bottom: var(--space-2xl); }
.section-head--center { text-align: center; }
.section-head--center .section-head__desc { margin: 0 auto; }
.section-head__desc { max-width: 560px; font-size: 1.05rem; margin-top: var(--space-sm); }

/* =============================================
   TOOL CARDS GRID
   ============================================= */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.tool-card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: var(--space-xl);
  transition: all var(--dur-base) var(--ease);
  position: relative; overflow: hidden;
  display: flex; flex-direction: column;
}
.tool-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), #818cf8);
  opacity: 0; transition: opacity var(--dur-base) var(--ease);
}
.tool-card:hover {
  border-color: rgba(37,99,235,0.25);
  box-shadow: var(--sh-lg);
  transform: translateY(-6px);
}
.tool-card:hover::before { opacity: 1; }

.tool-card__icon-wrap {
  width: 56px; height: 56px; border-radius: var(--r-lg);
  background: var(--accent-tint);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin-bottom: var(--space-lg); flex-shrink: 0;
}
.tool-card__title {
  font-size: 1.15rem; margin-bottom: var(--space-sm); font-weight: 700;
}
.tool-card__desc { font-size: 0.875rem; flex: 1; margin-bottom: var(--space-lg); }
.tool-card__footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto;
}
.tool-card__tag { font-size: 0.72rem; }
.tool-card__arrow {
  width: 36px; height: 36px; border-radius: var(--r-md);
  background: var(--accent-tint); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; transition: all var(--dur-base) var(--ease);
  text-decoration: none;
}
.tool-card:hover .tool-card__arrow {
  background: var(--accent); color: #fff; transform: translateX(3px);
}

/* =============================================
   FEATURED / SPOTLIGHT
   ============================================= */
.spotlight {
  background: var(--ink);
  border-radius: var(--r-xl); overflow: hidden;
  display: grid; grid-template-columns: 1fr 380px;
  position: relative;
}
.spotlight::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 100% at 0% 50%, rgba(37,99,235,0.2) 0%, transparent 60%);
  pointer-events: none;
}
.spotlight__content {
  padding: var(--space-2xl); position: relative; z-index: 1;
}
.spotlight__badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.3);
  color: var(--gold); font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 5px 12px; border-radius: var(--r-full); margin-bottom: var(--space-lg);
}
.spotlight__title { color: #fff; margin-bottom: var(--space-md); }
.spotlight__desc { color: rgba(255,255,255,0.65); margin-bottom: var(--space-xl); max-width: 440px; }
.spotlight__features {
  display: flex; flex-direction: column; gap: 10px;
  margin-bottom: var(--space-xl);
}
.spotlight__feature {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.875rem; color: rgba(255,255,255,0.75);
}
.spotlight__feature::before {
  content: '✓'; width: 20px; height: 20px;
  background: rgba(16,185,129,0.2); color: var(--green);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; font-weight: 700; flex-shrink: 0;
}
.spotlight__visual {
  background: linear-gradient(135deg, rgba(37,99,235,0.15), rgba(139,92,246,0.1));
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-xl); font-size: 8rem;
}

/* =============================================
   WHY / FEATURES GRID
   ============================================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-lg);
}
.feature-item {
  padding: var(--space-xl);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  background: var(--paper-warm);
  transition: all var(--dur-base) var(--ease);
}
.feature-item:hover {
  border-color: rgba(37,99,235,0.2);
  background: var(--accent-tint);
  transform: translateY(-4px);
  box-shadow: var(--sh-md);
}
.feature-item__icon {
  font-size: 2rem; margin-bottom: var(--space-md);
  width: 52px; height: 52px; border-radius: var(--r-md);
  background: var(--accent-tint);
  display: flex; align-items: center; justify-content: center;
}
.feature-item__title { font-size: 1rem; margin-bottom: 6px; }
.feature-item__desc { font-size: 0.875rem; }

/* =============================================
   BLOG GRID — LISTING PAGE
   ============================================= */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.blog-grid--featured {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto;
}
.blog-grid--featured .blog-card:first-child {
  grid-column: 1 / -1;
  flex-direction: row;
}
.blog-grid--featured .blog-card:first-child .blog-card__thumb {
  height: auto; min-height: 280px; flex: 0 0 50%;
}
.blog-grid--featured .blog-card:first-child .blog-card__body {
  padding: var(--space-2xl);
}
.blog-grid--featured .blog-card:first-child .blog-card__title {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
}

.blog-card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--r-xl); overflow: hidden;
  display: flex; flex-direction: column;
  transition: all var(--dur-base) var(--ease);
}
.blog-card:hover {
  border-color: rgba(37,99,235,0.2);
  box-shadow: var(--sh-lg);
  transform: translateY(-5px);
}
.blog-card__thumb {
  height: 200px; overflow: hidden;
  background: linear-gradient(135deg, var(--accent-tint), #f3e8ff);
  flex-shrink: 0; position: relative;
}
.blog-card__thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}
.blog-card:hover .blog-card__thumb img { transform: scale(1.05); }
.blog-card__thumb-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem; opacity: 0.5;
}
.blog-card__body {
  padding: var(--space-lg); flex: 1; display: flex; flex-direction: column;
}
.blog-card__meta {
  display: flex; align-items: center; gap: var(--space-sm);
  margin-bottom: var(--space-md); flex-wrap: wrap;
}
.blog-card__cat {
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--accent);
}
.blog-card__date {
  font-size: 0.78rem; color: var(--ink-muted);
}
.blog-card__date::before { content: '·'; margin-right: var(--space-sm); }
.blog-card__title {
  font-size: 1.1rem; line-height: 1.3;
  margin-bottom: var(--space-sm);
  transition: color var(--dur-fast) var(--ease);
}
.blog-card__title a:hover { color: var(--accent); }
.blog-card__excerpt { font-size: 0.875rem; flex: 1; margin-bottom: var(--space-lg); }
.blog-card__footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto; padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}
.blog-card__read-time { font-size: 0.78rem; color: var(--ink-muted); }
.blog-card__link {
  font-size: 0.82rem; font-weight: 600; color: var(--accent);
  display: flex; align-items: center; gap: 4px;
  transition: gap var(--dur-fast) var(--ease);
}
.blog-card__link:hover { gap: 8px; }

/* =============================================
   BLOG SIDEBAR
   ============================================= */
.blog-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-2xl);
  align-items: start;
}
.sidebar { display: flex; flex-direction: column; gap: var(--space-xl); }
.sidebar-widget {
  background: var(--paper-warm);
  border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: var(--space-xl);
}
.sidebar-widget__title {
  font-size: 0.85rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-muted); margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md); border-bottom: 2px solid var(--accent);
  display: inline-block;
}

/* Popular posts in sidebar */
.sidebar-posts { display: flex; flex-direction: column; gap: var(--space-md); }
.sidebar-post {
  display: flex; gap: var(--space-md); align-items: flex-start;
}
.sidebar-post__num {
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 800;
  color: var(--border-dark); line-height: 1; flex-shrink: 0; min-width: 28px;
}
.sidebar-post__title {
  font-size: 0.875rem; font-weight: 600; line-height: 1.4;
  color: var(--ink); transition: color var(--dur-fast) var(--ease);
}
.sidebar-post__title:hover { color: var(--accent); }
.sidebar-post__date { font-size: 0.75rem; color: var(--ink-muted); margin-top: 4px; }

/* Tools list in sidebar */
.sidebar-tools { display: flex; flex-direction: column; gap: var(--space-sm); }
.sidebar-tool {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: 10px var(--space-md);
  border: 1px solid var(--border); border-radius: var(--r-md);
  font-size: 0.875rem; font-weight: 600; color: var(--ink);
  background: var(--paper);
  transition: all var(--dur-fast) var(--ease);
}
.sidebar-tool:hover {
  background: var(--accent-tint); color: var(--accent);
  border-color: rgba(37,99,235,0.3); transform: translateX(4px);
}
.sidebar-tool__icon { font-size: 1.1rem; flex-shrink: 0; }

/* =============================================
   SINGLE POST / BLOG DETAIL
   ============================================= */
.post-hero {
  background: var(--ink); padding: var(--space-3xl) 0 var(--space-2xl);
  position: relative; overflow: hidden;
}
.post-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 30% 50%, rgba(37,99,235,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.post-hero__inner { position: relative; z-index: 1; max-width: 800px; }
.post-hero__breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.8rem; color: rgba(255,255,255,0.45);
  margin-bottom: var(--space-lg);
}
.post-hero__breadcrumb a { color: rgba(255,255,255,0.6); }
.post-hero__breadcrumb a:hover { color: #fff; }
.post-hero__breadcrumb span { opacity: 0.3; }
.post-hero__cat {
  display: inline-flex; align-items: center;
  background: rgba(37,99,235,0.2); border: 1px solid rgba(37,99,235,0.3);
  color: #93c5fd; font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 5px 12px; border-radius: var(--r-full); margin-bottom: var(--space-lg);
}
.post-hero__title { color: #fff; margin-bottom: var(--space-lg); }
.post-hero__meta {
  display: flex; align-items: center; gap: var(--space-lg); flex-wrap: wrap;
}
.post-hero__author {
  display: flex; align-items: center; gap: 10px;
}
.post-hero__avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--accent); display: flex; align-items: center;
  justify-content: center; color: #fff; font-weight: 700; font-size: 0.875rem;
  overflow: hidden; flex-shrink: 0;
}
.post-hero__author-name { font-size: 0.875rem; font-weight: 600; color: rgba(255,255,255,0.85); }
.post-hero__date { font-size: 0.8rem; color: rgba(255,255,255,0.45); }
.post-hero__read-time {
  font-size: 0.8rem; color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.06); padding: 5px 12px;
  border-radius: var(--r-full);
}

/* Featured image */
.post-featured-img {
  margin-top: -60px; position: relative; z-index: 2;
  border-radius: var(--r-xl); overflow: hidden;
  box-shadow: var(--sh-xl); margin-bottom: var(--space-2xl);
  max-height: 480px;
}
.post-featured-img img { width: 100%; height: 100%; object-fit: cover; }

/* Post layout */
.post-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-2xl);
  align-items: start;
}

/* Post content */
.post-content {
  font-size: 1.05rem; line-height: 1.85;
  color: var(--ink-muted);
}
.post-content h2, .post-content h3, .post-content h4 {
  color: var(--ink); margin-top: var(--space-2xl); margin-bottom: var(--space-md);
}
.post-content h2 { font-size: 1.7rem; }
.post-content h3 { font-size: 1.35rem; }
.post-content p { margin-bottom: var(--space-lg); }
.post-content ul, .post-content ol {
  margin: var(--space-lg) 0; padding-left: var(--space-xl);
}
.post-content ul { list-style: disc; }
.post-content ol { list-style: decimal; }
.post-content li { margin-bottom: 8px; }
.post-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.post-content strong { color: var(--ink); font-weight: 700; }
.post-content blockquote {
  border-left: 4px solid var(--accent);
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-xl) 0;
  background: var(--accent-tint);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-style: italic; font-size: 1.1rem; color: var(--ink);
}
.post-content img {
  border-radius: var(--r-lg); margin: var(--space-xl) 0;
  box-shadow: var(--sh-md); width: 100%;
}
.post-content code {
  font-family: var(--font-mono); font-size: 0.875em;
  background: var(--paper-tint); padding: 2px 6px;
  border-radius: var(--r-sm); color: var(--accent);
}
.post-content pre {
  background: var(--ink); color: #e2e8f0;
  padding: var(--space-xl); border-radius: var(--r-lg);
  overflow-x: auto; margin: var(--space-xl) 0;
  font-family: var(--font-mono); font-size: 0.875rem;
  line-height: 1.7;
}
.post-content pre code { background: none; color: inherit; padding: 0; }
.post-content table {
  width: 100%; border-collapse: collapse;
  margin: var(--space-xl) 0; font-size: 0.9rem;
}
.post-content th {
  background: var(--paper-tint); padding: 12px 16px;
  text-align: left; font-weight: 700; color: var(--ink);
  border-bottom: 2px solid var(--border);
}
.post-content td {
  padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--ink-muted);
}
.post-content tr:hover td { background: var(--paper-warm); }

/* Post tags */
.post-tags {
  display: flex; align-items: center; gap: var(--space-sm);
  flex-wrap: wrap; margin-top: var(--space-2xl);
  padding-top: var(--space-xl); border-top: 1px solid var(--border);
}
.post-tags__label { font-size: 0.82rem; font-weight: 600; color: var(--ink-muted); }

/* Author bio */
.author-bio {
  background: var(--paper-warm); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: var(--space-xl);
  display: flex; gap: var(--space-lg); align-items: flex-start;
  margin-top: var(--space-2xl);
}
.author-bio__avatar {
  width: 64px; height: 64px; border-radius: 50%; overflow: hidden;
  flex-shrink: 0; background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 700; color: #fff;
}
.author-bio__name { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.author-bio__role { font-size: 0.8rem; color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.author-bio__desc { font-size: 0.875rem; }

/* Post navigation */
.post-nav {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-md); margin-top: var(--space-2xl);
}
.post-nav__item {
  padding: var(--space-lg); border: 1px solid var(--border);
  border-radius: var(--r-lg); background: var(--paper-warm);
  transition: all var(--dur-base) var(--ease);
}
.post-nav__item:hover {
  border-color: rgba(37,99,235,0.3);
  background: var(--accent-tint); box-shadow: var(--sh-md);
}
.post-nav__label { font-size: 0.75rem; color: var(--ink-muted); margin-bottom: 6px; font-weight: 600; }
.post-nav__title { font-size: 0.9rem; font-weight: 700; line-height: 1.3; color: var(--ink); }
.post-nav__item--next { text-align: right; }

/* Related posts */
.related-posts { margin-top: var(--space-3xl); }
.related-posts__title {
  font-size: 1.4rem; margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md); border-bottom: 2px solid var(--border);
}
.related-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

/* =============================================
   CALCULATOR PAGE
   ============================================= */
.calc-hero {
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-soft) 100%);
  padding: var(--space-2xl) 0;
  position: relative; overflow: hidden;
}
.calc-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 80% 50%, rgba(37,99,235,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.calc-hero__inner { position: relative; z-index: 1; display: flex; align-items: center; gap: var(--space-lg); }
.calc-hero__icon {
  width: 64px; height: 64px; border-radius: var(--r-xl);
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; flex-shrink: 0;
}
.calc-hero__title { color: #fff; margin-bottom: 6px; }
.calc-hero__desc { color: rgba(255,255,255,0.6); margin: 0; }
.calc-hero__badge {
  margin-left: auto;
  background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.3);
  color: var(--gold); font-size: 0.82rem; font-weight: 700;
  padding: 8px 16px; border-radius: var(--r-full);
  white-space: nowrap; flex-shrink: 0;
}

/* Calculator layout */
.calc-page-layout {
  display: grid; grid-template-columns: 1fr 300px;
  gap: var(--space-2xl); align-items: start;
  padding: var(--space-2xl) 0;
}

/* Calculator box */
.calc-box {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--r-xl); overflow: hidden;
  box-shadow: var(--sh-md);
}
.calc-box__header {
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--border);
  background: var(--paper-warm);
}
.calc-box__tabs {
  display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none;
}
.calc-box__tabs::-webkit-scrollbar { display: none; }
.calc-tab {
  padding: 8px 16px; border: 1px solid var(--border);
  border-radius: var(--r-full); font-size: 0.82rem; font-weight: 600;
  color: var(--ink-muted); background: var(--paper); white-space: nowrap;
  transition: all var(--dur-fast) var(--ease); cursor: pointer;
}
.calc-tab.active, .calc-tab:hover {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.calc-box__body { padding: var(--space-xl); }

/* Inputs */
.calc-field { margin-bottom: var(--space-lg); }
.calc-field label {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.82rem; font-weight: 700; color: var(--ink);
  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 8px;
}
.calc-input {
  width: 100%; padding: 14px 16px;
  border: 2px solid var(--border); border-radius: var(--r-md);
  font-size: 1.05rem; font-family: var(--font-body);
  background: var(--paper-warm); color: var(--ink);
  transition: all var(--dur-base) var(--ease);
  -webkit-appearance: none;
}
.calc-input:focus {
  outline: none; border-color: var(--accent);
  background: var(--paper); box-shadow: 0 0 0 4px var(--accent-glow);
}
.calc-input-group {
  display: grid; grid-template-columns: 1fr auto;
  border: 2px solid var(--border); border-radius: var(--r-md);
  overflow: hidden; background: var(--paper-warm);
  transition: border-color var(--dur-base) var(--ease);
}
.calc-input-group:focus-within { border-color: var(--accent); }
.calc-input-group .calc-input {
  border: none; border-radius: 0; background: transparent;
  box-shadow: none;
}
.calc-input-group .calc-input:focus { box-shadow: none; }
.calc-unit {
  display: flex; align-items: center; padding: 0 14px;
  background: var(--paper-tint); font-size: 0.875rem; font-weight: 700;
  color: var(--ink-muted); border-left: 2px solid var(--border);
  white-space: nowrap;
}

/* Result */
.calc-result {
  margin-top: var(--space-xl);
  background: linear-gradient(135deg, var(--accent-tint), #f0f4ff);
  border: 2px solid rgba(37,99,235,0.2);
  border-radius: var(--r-xl); padding: var(--space-xl);
  text-align: center;
  animation: resultReveal 0.4s var(--ease-spring);
}
@keyframes resultReveal {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.calc-result__label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 8px; }
.calc-result__value { font-family: var(--font-display); font-size: 2.8rem; font-weight: 800; color: var(--ink); line-height: 1; }
.calc-result__sub { font-size: 0.875rem; color: var(--ink-muted); margin-top: 8px; }

.calc-multi-result {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md); margin-top: var(--space-lg);
}
.calc-result-card {
  background: var(--paper); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: var(--space-lg); text-align: center;
}
.calc-result-card__val {
  font-family: var(--font-display); font-size: 1.4rem; font-weight: 800;
  color: var(--accent);
}
.calc-result-card__lbl { font-size: 0.75rem; color: var(--ink-muted); margin-top: 4px; }

/* =============================================
   FAQ
   ============================================= */
.faq-list { display: flex; flex-direction: column; gap: var(--space-sm); max-width: 760px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border); border-radius: var(--r-lg);
  overflow: hidden; transition: border-color var(--dur-base) var(--ease);
}
.faq-item.open { border-color: rgba(37,99,235,0.3); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  font-weight: 700; font-size: 0.975rem; cursor: pointer;
  color: var(--ink); background: var(--paper);
  transition: background var(--dur-fast) var(--ease); gap: var(--space-md);
}
.faq-q:hover { background: var(--paper-warm); }
.faq-item.open .faq-q { background: var(--accent-tint); color: var(--accent); }
.faq-icon {
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid currentColor; display: flex; align-items: center;
  justify-content: center; font-size: 1rem; flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease-spring);
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height var(--dur-slow) var(--ease); }
.faq-a p { padding: var(--space-lg) var(--space-xl); font-size: 0.95rem; }
.faq-item.open .faq-a { max-height: 400px; }

/* =============================================
   CTA SECTION
   ============================================= */
.cta-section {
  background: var(--ink); border-radius: var(--r-xl);
  padding: var(--space-3xl); text-align: center;
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 20% 50%, rgba(37,99,235,0.2) 0%, transparent 50%),
    radial-gradient(ellipse 60% 80% at 80% 50%, rgba(139,92,246,0.15) 0%, transparent 50%);
  pointer-events: none;
}
.cta-section__inner { position: relative; z-index: 1; }
.cta-section__title { color: #fff; margin-bottom: var(--space-md); }
.cta-section__desc { color: rgba(255,255,255,0.6); max-width: 500px; margin: 0 auto var(--space-xl); }
.cta-section__actions { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }

/* =============================================
   BREADCRUMBS
   ============================================= */
.breadcrumbs {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8rem; margin-bottom: var(--space-lg);
}
.breadcrumbs a { color: var(--ink-muted); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs__sep { color: var(--border-dark); }
.breadcrumbs__current { color: var(--ink-muted); }

/* =============================================
   PAGINATION
   ============================================= */
.pagination {
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-sm); margin-top: var(--space-2xl); flex-wrap: wrap;
}
.pagination .page-numbers {
  display: flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; border-radius: var(--r-md);
  border: 1px solid var(--border); font-size: 0.875rem; font-weight: 600;
  color: var(--ink-muted); background: var(--paper);
  transition: all var(--dur-fast) var(--ease);
}
.pagination .page-numbers:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-tint); }
.pagination .page-numbers.current { background: var(--accent); color: #fff; border-color: var(--accent); }
.pagination .dots { border: none; background: none; min-width: auto; }

/* =============================================
   FOOTER
   ============================================= */
#site-footer {
  background: var(--ink); color: rgba(255,255,255,0.6);
  margin-top: var(--space-3xl);
}
.footer-top { padding: var(--space-3xl) 0; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-2xl);
}
.footer-brand__logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: 1.4rem; font-weight: 800;
  color: #fff; margin-bottom: var(--space-lg);
}
.footer-brand__desc { font-size: 0.875rem; line-height: 1.7; max-width: 280px; }
.footer-col__title {
  font-size: 0.78rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: rgba(255,255,255,0.4);
  margin-bottom: var(--space-lg);
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 0.875rem; color: rgba(255,255,255,0.55);
  transition: color var(--dur-fast) var(--ease);
}
.footer-col ul li a:hover { color: #fff; }

/* Newsletter */
.footer-newsletter p { font-size: 0.875rem; margin-bottom: var(--space-md); }
.newsletter-form { display: flex; gap: var(--space-sm); }
.newsletter-input {
  flex: 1; padding: 10px 14px;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-md); color: #fff; font-size: 0.875rem;
  font-family: var(--font-body);
}
.newsletter-input::placeholder { color: rgba(255,255,255,0.35); }
.newsletter-input:focus { outline: none; border-color: var(--accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--space-lg) 0;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: var(--space-md);
}
.footer-bottom__copy { font-size: 0.82rem; }
.footer-bottom__links {
  display: flex; gap: var(--space-lg);
}
.footer-bottom__links a {
  font-size: 0.82rem; color: rgba(255,255,255,0.4);
  transition: color var(--dur-fast) var(--ease);
}
.footer-bottom__links a:hover { color: #fff; }

/* =============================================
   ABOUT PAGE
   ============================================= */
.about-hero {
  background: var(--paper-warm); border-bottom: 1px solid var(--border);
  padding: var(--space-3xl) 0;
}
.about-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-lg); margin-top: var(--space-2xl);
}
.about-card {
  padding: var(--space-xl); background: var(--paper);
  border: 1px solid var(--border); border-radius: var(--r-xl);
  text-align: center; transition: all var(--dur-base) var(--ease);
}
.about-card:hover { box-shadow: var(--sh-lg); transform: translateY(-4px); border-color: rgba(37,99,235,0.2); }
.about-card__icon { font-size: 2.5rem; margin-bottom: var(--space-md); }
.about-card__title { font-size: 1rem; margin-bottom: 6px; }

/* =============================================
   CONTACT PAGE
   ============================================= */
.contact-layout {
  display: grid; grid-template-columns: 1fr 380px;
  gap: var(--space-2xl);
}
.contact-form-box {
  background: var(--paper); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: var(--space-2xl);
  box-shadow: var(--sh-md);
}
.form-field { margin-bottom: var(--space-lg); }
.form-label {
  display: block; font-size: 0.82rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink); margin-bottom: 8px;
}
.form-input, .form-textarea, .form-select {
  width: 100%; padding: 13px 16px;
  border: 2px solid var(--border); border-radius: var(--r-md);
  font-size: 0.95rem; font-family: var(--font-body);
  background: var(--paper-warm); color: var(--ink);
  transition: border-color var(--dur-base) var(--ease);
  -webkit-appearance: none;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.form-textarea { resize: vertical; min-height: 140px; }
.contact-info-box {
  display: flex; flex-direction: column; gap: var(--space-lg);
}
.contact-info-item {
  display: flex; gap: var(--space-md); align-items: flex-start;
  padding: var(--space-lg); background: var(--paper-warm);
  border: 1px solid var(--border); border-radius: var(--r-lg);
}
.contact-info-item__icon {
  width: 44px; height: 44px; border-radius: var(--r-md);
  background: var(--accent-tint); display: flex; align-items: center;
  justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}
.contact-info-item__label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-muted); margin-bottom: 4px; }
.contact-info-item__val { font-size: 0.9rem; font-weight: 600; color: var(--ink); }

/* =============================================
   BACK TO TOP
   ============================================= */
#back-to-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 500;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); color: #fff;
  border: none; box-shadow: var(--sh-md);
  display: none; align-items: center; justify-content: center;
  font-size: 1.1rem; cursor: pointer;
  transition: all var(--dur-base) var(--ease-spring);
}
#back-to-top:hover { transform: translateY(-4px); box-shadow: var(--sh-accent); }
#back-to-top.visible { display: flex; }

/* =============================================
   READING PROGRESS BAR
   ============================================= */
#reading-progress {
  position: fixed; top: 0; left: 0; z-index: 999;
  height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--accent), #818cf8);
  transition: width 0.1s linear;
}

/* =============================================
   SKELETON LOADING
   ============================================= */
.skeleton {
  background: linear-gradient(90deg, var(--paper-tint) 25%, var(--border) 50%, var(--paper-tint) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--r-sm);
}
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* =============================================
   RESPONSIVE — TABLET (768px)
   ============================================= */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .hero__stats { gap: var(--space-lg); }

  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid--featured { grid-template-columns: 1fr; }
  .blog-grid--featured .blog-card:first-child { flex-direction: column; }
  .blog-grid--featured .blog-card:first-child .blog-card__thumb { flex: none; min-height: 220px; }

  .blog-layout { grid-template-columns: 1fr; }
  .sidebar { display: grid; grid-template-columns: repeat(2, 1fr); }

  .post-layout { grid-template-columns: 1fr; }
  .post-layout .sidebar { grid-template-columns: 1fr; display: flex; }

  .calc-page-layout { grid-template-columns: 1fr; }

  .spotlight { grid-template-columns: 1fr; }
  .spotlight__visual { display: none; }

  .footer-grid { grid-template-columns: repeat(2, 1fr); }

  .contact-layout { grid-template-columns: 1fr; }

  .related-grid { grid-template-columns: repeat(2, 1fr); }

  .post-nav { grid-template-columns: 1fr; }

  .calc-multi-result { grid-template-columns: 1fr; }
}

/* =============================================
   RESPONSIVE — MOBILE (480px)
   ============================================= */
@media (max-width: 640px) {
  :root { --space-3xl: 64px; --space-2xl: 48px; }

  .site-nav, .header-cta .btn--outline { display: none; }
  .nav-toggle { display: flex; }

  /* Mobile menu open state */
  .site-nav.mobile-open {
    display: flex; flex-direction: column;
    position: fixed; inset: 0; top: 69px;
    background: var(--paper); z-index: 800;
    padding: var(--space-lg); gap: 2px;
    overflow-y: auto; align-items: stretch;
    border-top: 1px solid var(--border);
  }
  .site-nav.mobile-open .site-nav__link {
    padding: 14px var(--space-lg);
    font-size: 1rem; border-radius: var(--r-md);
  }
  .nav-dropdown {
    position: static; opacity: 1; visibility: visible;
    transform: none; box-shadow: none;
    border: none; padding: 0 0 0 var(--space-lg);
    background: transparent; min-width: auto;
  }

  .blog-grid, .blog-grid--featured { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }

  .tools-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: repeat(2, 1fr); }

  .footer-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .hero__stats { flex-wrap: wrap; gap: var(--space-lg); }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }

  .sidebar { grid-template-columns: 1fr; display: flex; }

  .author-bio { flex-direction: column; }

  .cta-section { padding: var(--space-2xl) var(--space-lg); }
  .cta-section__actions { flex-direction: column; align-items: center; }

  .calc-box__tabs { gap: 4px; }
  .calc-tab { padding: 7px 12px; font-size: 0.78rem; }

  .post-featured-img { margin-top: 0; }
  .post-hero__meta { gap: var(--space-md); }
}

/* =============================================
   AUTO FAQ DETECTION IN POST CONTENT
   When an H3/H4 is followed by a paragraph,
   it gets converted to accordion style via JS.
   These are the styles that JS adds.
   ============================================= */
.auto-faq-wrap {
  margin: var(--space-xl) 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--border);
}
.auto-faq-item {
  border-bottom: 1px solid var(--border);
}
.auto-faq-item:last-child { border-bottom: none; }
.auto-faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  font-family: var(--font-display); font-weight: 700;
  font-size: 1rem; cursor: pointer; gap: var(--space-md);
  color: var(--ink); background: var(--paper);
  transition: all var(--dur-fast) var(--ease);
  user-select: none;
}
.auto-faq-q:hover { background: var(--paper-warm); color: var(--accent); }
.auto-faq-item.open .auto-faq-q {
  background: var(--accent-tint); color: var(--accent);
}
.auto-faq-icon {
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid currentColor;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; flex-shrink: 0; font-style: normal;
  transition: transform var(--dur-base) var(--ease-spring);
  line-height: 1;
}
.auto-faq-item.open .auto-faq-icon { transform: rotate(45deg); }
.auto-faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height var(--dur-slow) var(--ease),
              padding var(--dur-base) var(--ease);
  padding: 0 var(--space-xl);
}
.auto-faq-a p {
  padding: var(--space-md) 0 var(--space-lg);
  font-size: 0.95rem; color: var(--ink-muted);
  border-top: 1px solid var(--border);
}
.auto-faq-item.open .auto-faq-a { max-height: 500px; padding: 0 var(--space-xl); }

/* FAQ section heading — before the accordion group */
.auto-faq-section-label {
  font-family: var(--font-display);
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--accent); margin-bottom: var(--space-md);
  margin-top: var(--space-2xl);
  display: flex; align-items: center; gap: 8px;
}
.auto-faq-section-label::before {
  content: '';
  display: block; width: 20px; height: 2px;
  background: var(--accent); border-radius: 2px;
}

/* =============================================
   CONTENT ENRICHMENT STYLES
   Extra formatting for static pages content
   ============================================= */

/* Info boxes inside content */
.content-info-box {
  display: flex; gap: var(--space-md); align-items: flex-start;
  padding: var(--space-lg) var(--space-xl);
  border-radius: var(--r-lg); margin: var(--space-xl) 0;
  border-left: 4px solid var(--accent);
  background: var(--accent-tint);
}
.content-info-box--warning { border-color: var(--gold); background: var(--gold-tint); }
.content-info-box--success { border-color: var(--green); background: #ecfdf5; }
.content-info-box__icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.content-info-box__text h4 { font-size: 0.95rem; margin-bottom: 4px; color: var(--ink); }
.content-info-box__text p { font-size: 0.875rem; margin: 0; }

/* Step list for how-to content */
.steps-list { list-style: none; margin: var(--space-xl) 0; display: flex; flex-direction: column; gap: var(--space-lg); }
.steps-list li {
  display: flex; gap: var(--space-lg); align-items: flex-start;
  padding: var(--space-lg) var(--space-xl);
  background: var(--paper-warm); border: 1px solid var(--border);
  border-radius: var(--r-lg);
}
.steps-list li::before {
  content: counter(step);
  counter-increment: step;
  min-width: 36px; height: 36px;
  background: var(--accent); color: #fff;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 800; font-size: 0.9rem;
  flex-shrink: 0;
}
.steps-list { counter-reset: step; }

/* Stats/numbers highlight */
.content-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-md); margin: var(--space-xl) 0;
}
.content-stat {
  background: var(--ink); color: #fff;
  padding: var(--space-xl); border-radius: var(--r-lg);
  text-align: center;
}
.content-stat__num {
  font-family: var(--font-display); font-size: 2rem; font-weight: 800;
  color: var(--gold); line-height: 1; margin-bottom: 6px;
}
.content-stat__label { font-size: 0.8rem; color: rgba(255,255,255,0.6); }

/* Team/person card */
.team-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-lg); margin: var(--space-xl) 0;
}
.team-card {
  background: var(--paper); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: var(--space-xl); text-align: center;
  transition: all var(--dur-base) var(--ease);
}
.team-card:hover { box-shadow: var(--sh-md); transform: translateY(-4px); }
.team-card__avatar {
  width: 72px; height: 72px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; margin: 0 auto var(--space-md);
}
.team-card__name { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.team-card__role { font-size: 0.8rem; color: var(--accent); font-weight: 600; }

/* Policy content specifics */
.policy-toc {
  background: var(--paper-warm); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: var(--space-xl);
  margin-bottom: var(--space-2xl);
}
.policy-toc h4 { font-size: 0.9rem; margin-bottom: var(--space-md); color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.08em; }
.policy-toc ol { list-style: decimal; padding-left: 20px; }
.policy-toc ol li { margin-bottom: 6px; }
.policy-toc ol li a { color: var(--accent); font-size: 0.9rem; }
.policy-toc ol li a:hover { text-decoration: underline; }

/* Responsive FAQ */
@media (max-width: 640px) {
  .auto-faq-q { font-size: 0.9rem; padding: var(--space-md) var(--space-lg); }
  .auto-faq-a, .auto-faq-item.open .auto-faq-a { padding: 0 var(--space-lg); }
  .content-stats { grid-template-columns: repeat(2, 1fr); }
}