/* ============================================================
   TheZeroWhisper — Shared Design System
   Used across: root index, about, privacy, contact,
                medical-calculators/index, rabies-scheduler
   ============================================================ */

:root {
  --primary:      #1a365d;
  --primary-mid:  #2b6cb0;
  --primary-light:#3182ce;
  --accent:       #f59e0b;
  --accent-dark:  #d97706;
  --danger:       #e53e3e;
  --green:        #38a169;
  --bg:           #f0f4f8;
  --surface:      #ffffff;
  --surface2:     #f7fafc;
  --border:       #e2e8f0;
  --text:         #1a202c;
  --text-muted:   #4a5568;
  --text-light:   #718096;
  --radius:       14px;
  --radius-sm:    8px;
  --shadow:       0 2px 16px rgba(0,0,0,.07);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.12);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

/* ── SITE HEADER ─────────────────────────────────────────── */
.site-header {
  background: var(--primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,.25);
}
.header-inner {
  max-width: 1100px;
  margin: auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 58px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
}
.site-logo .logo-icon { font-size: 1.5rem; }
.site-logo .logo-name {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -.01em;
}
.site-logo .logo-tag {
  font-size: .68rem;
  font-weight: 600;
  background: var(--accent);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: .04em;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  color: rgba(255,255,255,.82);
  text-decoration: none;
  font-size: .88rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all .18s;
}
.site-nav a:hover,
.site-nav a.active { background: rgba(255,255,255,.15); color: #fff; }
.nav-cta {
  background: var(--accent) !important;
  color: var(--primary) !important;
  padding: 7px 14px !important;
  border-radius: 20px !important;
  font-weight: 700 !important;
}
.nav-cta:hover { background: #fbbf24 !important; transform: translateY(-1px); }

/* Hamburger for mobile */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px 8px;
}
@media(max-width: 680px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 58px;
    left: 0; right: 0;
    background: var(--primary);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 20px;
    gap: 4px;
    box-shadow: 0 8px 24px rgba(0,0,0,.2);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 10px 14px; font-size: .95rem; }
}

/* ── ADSENSE SLOTS ───────────────────────────────────────── */
.ad-slot {
  display: block;
  text-align: center;
  margin: 24px auto;
  max-width: 100%;
  min-height: 90px;
  background: var(--surface2);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: .78rem;
}
.ad-slot-banner { height: 90px; }
.ad-slot-square { height: 250px; max-width: 300px; }
.ad-slot ins { display: block; }

/* ── BREADCRUMB ──────────────────────────────────────────── */
.breadcrumb {
  font-size: .78rem;
  color: var(--text-light);
  padding: 10px 0 6px;
}
.breadcrumb a { color: var(--primary-light); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 5px; color: var(--border); }

/* ── SITE FOOTER ─────────────────────────────────────────── */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,.75);
  margin-top: 60px;
}
.footer-inner {
  max-width: 1100px;
  margin: auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
@media(max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media(max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
}
.footer-brand p {
  font-size: .85rem;
  line-height: 1.7;
  margin-top: 10px;
  max-width: 280px;
}
.footer-brand .brand-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.05rem;
  font-weight: 800;
  color: #fff;
}
.footer-col h4 {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: rgba(255,255,255,.5);
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,.72);
  text-decoration: none;
  font-size: .85rem;
  margin-bottom: 8px;
  transition: color .18s;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 24px;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .78rem;
  color: rgba(255,255,255,.45);
}
.footer-bottom a { color: rgba(255,255,255,.55); text-decoration: none; }
.footer-bottom a:hover { color: #fff; }

/* ── HERO SECTION ────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 60%, #1e3a8a 100%);
  color: #fff;
  padding: 60px 20px 72px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 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='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
  position: relative;
}
.page-hero p {
  font-size: clamp(.95rem, 2vw, 1.1rem);
  color: rgba(255,255,255,.82);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 20px;
  padding: 4px 16px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 14px;
  position: relative;
}

/* ── CONTENT WRAPPER ─────────────────────────────────────── */
.content-wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}
.content-wide {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

/* ── UTILITY CLASSES ─────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px 32px;
  margin-bottom: 24px;
}
.section-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.section-title span { color: var(--primary-light); }
.pill {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 700;
}
.pill-blue { background: #ebf8ff; color: #2b6cb0; border: 1px solid #bee3f8; }
.pill-green { background: #f0fff4; color: #276749; border: 1px solid #9ae6b4; }
.pill-orange { background: #fffaf0; color: #c05621; border: 1px solid #fbd38d; }
.pill-red { background: #fff5f5; color: #9b2c2c; border: 1px solid #fed7d7; }