/* =============================================
   ASCVDCalc – Main Stylesheet
   Design: Medical editorial — refined, trustworthy
   Fonts: Playfair Display (headings) + DM Sans (body)
   ============================================= */

/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-primary:    #C0392B;
  --clr-primary-dk: #962d23;
  --clr-primary-lt: #fef2f2;
  --clr-accent:     #F39C12;
  --clr-dark:       #1a1a2e;
  --clr-mid:        #2e3653;
  --clr-text:       #374151;
  --clr-muted:      #6b7280;
  --clr-border:     #e5e7eb;
  --clr-bg:         #ffffff;
  --clr-bg-alt:     #f8f9fc;

  --clr-low:         #16a34a;
  --clr-borderline:  #ca8a04;
  --clr-intermediate:#d97706;
  --clr-high:        #dc2626;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', sans-serif;

  --radius:   12px;
  --radius-sm: 6px;
  --shadow:   0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg:0 12px 40px rgba(0,0,0,0.14);
  --transition: 0.22s ease;
  --max-w:    1160px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--clr-text);
  background: var(--clr-bg);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* === TYPOGRAPHY === */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--clr-dark);
  line-height: 1.2;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; margin-bottom: 1rem; }
h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.5rem; }
p  { margin-bottom: 1rem; }
a  { color: var(--clr-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--clr-primary-dk); text-decoration: underline; }
ul { padding-left: 1.4rem; }
li { margin-bottom: 0.4rem; }

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}
.btn-primary:hover {
  background: var(--clr-primary-dk);
  border-color: var(--clr-primary-dk);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(192,57,43,0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn-secondary:hover {
  background: var(--clr-primary);
  color: #fff;
  text-decoration: none;
}
.btn-outline {
  background: transparent;
  color: var(--clr-dark);
  border-color: var(--clr-dark);
}
.btn-outline:hover {
  background: var(--clr-dark);
  color: #fff;
  text-decoration: none;
}

/* === HEADER / NAV === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--clr-border);
  box-shadow: 0 1px 12px rgba(0,0,0,0.06);
}
.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--clr-dark);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-logo strong { font-weight: 700; }
.logo-icon {
  font-size: 1.4rem;
  color: var(--clr-primary);
  line-height: 1;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  padding: 0;
  margin-left: auto;
}
.nav-links a {
  color: var(--clr-muted);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-primary);
  border-bottom-color: var(--clr-primary);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--clr-dark);
  margin-left: auto;
}

/* === HERO === */
.hero {
  background: linear-gradient(135deg, var(--clr-dark) 0%, var(--clr-mid) 100%);
  color: #fff;
  padding: 6rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.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='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%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");
}
.hero-bg-shape {
  position: absolute;
  right: -8%;
  top: -15%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(192,57,43,0.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  max-width: 700px;
}
.hero-badge {
  display: inline-block;
  background: rgba(192,57,43,0.25);
  color: #fca5a5;
  border: 1px solid rgba(252,165,165,0.3);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.hero h1 {
  color: #fff;
  margin-bottom: 1.25rem;
}
.accent { color: #fca5a5; }
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 2rem;
  max-width: 560px;
  line-height: 1.7;
}

/* === INFO STRIP === */
.info-strip {
  background: var(--clr-bg-alt);
  padding: 3rem 0;
  border-bottom: 1px solid var(--clr-border);
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}
.info-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}
.info-card:hover { transform: translateY(-3px); }
.info-icon { font-size: 2rem; display: block; margin-bottom: 0.75rem; }
.info-card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.info-card p { color: var(--clr-muted); font-size: 0.9rem; margin: 0; }

/* === CALCULATOR SECTION === */
.calculator-section {
  padding: 5rem 0;
}
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header p { color: var(--clr-muted); font-size: 1.05rem; }

.calc-wrapper {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--clr-border);
  overflow: hidden;
}

/* FORM */
#ascvdForm { padding: 2.5rem; }

.form-group {
  border: none;
  margin-bottom: 2rem;
  padding: 0;
}
.form-group legend {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--clr-primary);
  width: 100%;
  display: block;
}
.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-dark);
  letter-spacing: 0.01em;
}
.required { color: var(--clr-primary); }
.field input[type="number"] {
  padding: 0.65rem 1rem;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--clr-dark);
  background: var(--clr-bg-alt);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
}
.field input[type="number"]:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(192,57,43,0.12);
  background: #fff;
}
.field input.invalid { border-color: #dc2626; }
.field-hint { font-size: 0.78rem; color: var(--clr-muted); }

.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}
.radio-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--clr-text);
  padding: 0.45rem 1rem;
  border: 1.5px solid var(--clr-border);
  border-radius: 50px;
  transition: all var(--transition);
  background: var(--clr-bg-alt);
}
.radio-label:has(input:checked) {
  background: var(--clr-primary-lt);
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  font-weight: 600;
}
.radio-label input[type="radio"] { accent-color: var(--clr-primary); }

.form-error {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #991b1b;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.btn-calc {
  width: 100%;
  justify-content: center;
  font-size: 1.05rem;
  padding: 1rem 2rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.01em;
}

/* RESULT PANEL */
.result-panel {
  padding: 2.5rem;
  background: linear-gradient(135deg, var(--clr-dark) 0%, var(--clr-mid) 100%);
  color: #fff;
  animation: fadeSlide 0.4s ease;
}
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.result-header h3 {
  color: #fff;
  font-size: 1.4rem;
  margin: 0;
}
.btn-reset {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: var(--font-body);
  transition: background var(--transition);
}
.btn-reset:hover { background: rgba(255,255,255,0.25); }

/* Gauge */
.result-gauge-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.gauge-svg {
  width: 200px;
  height: 110px;
}
.gauge-center {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}
.risk-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 900;
  color: #fff;
  line-height: 1;
}
.risk-label {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.risk-category {
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.risk-interpretation {
  text-align: center;
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}
.result-disclaimer {
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}
.result-cta {
  text-align: center;
}
.result-cta p { color: rgba(255,255,255,0.75); font-size: 0.9rem; margin-bottom: 0.75rem; }

/* === ABOUT SECTION === */
.about-section {
  background: var(--clr-bg-alt);
  padding: 5rem 0;
  border-top: 1px solid var(--clr-border);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-text h2 { margin-bottom: 1rem; }
.about-text h3 { margin-top: 1.5rem; margin-bottom: 0.75rem; font-size: 1rem; }

.risk-legend {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.risk-legend li { display: flex; align-items: center; gap: 0.6rem; font-size: 0.9rem; }
.dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot.low          { background: var(--clr-low); }
.dot.borderline   { background: var(--clr-borderline); }
.dot.intermediate { background: var(--clr-intermediate); }
.dot.high         { background: var(--clr-high); }

/* Visual Card */
.about-visual { display: flex; align-items: flex-start; justify-content: center; }
.visual-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--clr-border);
  width: 100%;
  max-width: 360px;
}
.vc-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.vc-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-muted);
  width: 100px;
  flex-shrink: 0;
}
.vc-bar {
  height: 8px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: 50px;
  transition: width 1s ease;
}
.vc-caption {
  font-size: 0.78rem;
  color: var(--clr-muted);
  text-align: center;
  margin: 0.5rem 0 0;
  font-style: italic;
}

/* === BLOG PREVIEW === */
.blog-preview-section {
  padding: 5rem 0;
}
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.section-header h2 { margin: 0; }
.view-all {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-primary);
}
.blog-cards { display: grid; gap: 1.5rem; }

.blog-card {
  background: #fff;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}
.blog-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}
.blog-card-meta time, .blog-card-meta .read-time { color: var(--clr-muted); font-size: 0.82rem; }
.tag {
  display: inline-block;
  background: var(--clr-primary-lt);
  color: var(--clr-primary);
  border: 1px solid rgba(192,57,43,0.2);
  padding: 0.2rem 0.7rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.blog-card h3 a, .blog-card h2 a {
  color: var(--clr-dark);
  text-decoration: none;
}
.blog-card h3 a:hover, .blog-card h2 a:hover { color: var(--clr-primary); }
.blog-card p { color: var(--clr-muted); font-size: 0.92rem; }
.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
}
.read-more { font-weight: 600; font-size: 0.9rem; color: var(--clr-primary); }
.read-time { color: var(--clr-muted); font-size: 0.82rem; }

/* === FAQ === */
.faq-section {
  background: var(--clr-bg-alt);
  padding: 5rem 0;
  border-top: 1px solid var(--clr-border);
}
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 2rem; }
.faq-item {
  background: #fff;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.faq-item summary {
  padding: 1.1rem 1.5rem;
  font-weight: 600;
  font-size: 0.97rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--clr-dark);
  transition: background var(--transition);
}
.faq-item summary:hover { background: var(--clr-bg-alt); }
.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--clr-primary);
  font-weight: 300;
  transition: transform var(--transition);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  padding: 0 1.5rem 1.25rem;
  color: var(--clr-muted);
  font-size: 0.92rem;
  margin: 0;
}

/* === CTA SECTION === */
.cta-section {
  background: var(--clr-primary);
  padding: 4rem 0;
}
.cta-inner {
  text-align: center;
}
.cta-inner h2 { color: #fff; margin-bottom: 0.75rem; }
.cta-inner p { color: rgba(255,255,255,0.8); font-size: 1.05rem; margin-bottom: 1.5rem; }
.cta-inner .btn-primary {
  background: #fff;
  color: var(--clr-primary);
  border-color: #fff;
}
.cta-inner .btn-primary:hover {
  background: var(--clr-primary-lt);
  border-color: var(--clr-primary-lt);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

/* === FOOTER === */
.site-footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,0.65);
  padding: 3.5rem 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2rem;
}
.footer-brand .nav-logo {
  color: #fff;
  margin-bottom: 0.75rem;
}
.footer-brand p { font-size: 0.88rem; }
.footer-links h4 {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  font-family: var(--font-body);
}
.footer-links ul { list-style: none; padding: 0; }
.footer-links li { margin-bottom: 0.4rem; }
.footer-links a {
  color: rgba(255,255,255,0.55);
  font-size: 0.88rem;
  text-decoration: none;
  transition: color var(--transition);
}
.footer-links a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.25rem 1.5rem;
  font-size: 0.82rem;
  text-align: center;
  color: rgba(255,255,255,0.35);
}

/* === PAGE HERO (blog pages) === */
.page-hero {
  background: var(--clr-dark);
  color: #fff;
  padding: 3.5rem 0 2.5rem;
}
.page-hero h1 { color: #fff; font-size: clamp(1.8rem, 4vw, 2.8rem); margin: 0.5rem 0; }
.page-hero p { color: rgba(255,255,255,0.7); font-size: 1rem; margin: 0; }

/* Breadcrumb */
.breadcrumb {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.75rem;
}
.breadcrumb a { color: rgba(255,255,255,0.6); text-decoration: none; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { margin: 0 0.4rem; }

/* === BLOG LISTING === */
.blog-listing-section { padding: 4rem 0; }
.blog-listing-inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}
.blog-grid { display: flex; flex-direction: column; gap: 1.5rem; }
.blog-card-full h2 { font-size: 1.4rem; margin: 0.5rem 0; }
.coming-soon-card {
  background: var(--clr-bg-alt);
  border: 1px dashed var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem;
}
.coming-soon-card h3 { font-size: 1.05rem; margin: 0.5rem 0; color: var(--clr-muted); }
.coming-soon-card p { color: var(--clr-muted); font-size: 0.9rem; margin: 0; }
.coming-soon-card .tag {
  background: #f3f4f6;
  color: var(--clr-muted);
  border-color: transparent;
}

/* === SIDEBAR === */
.blog-sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-widget {
  background: #fff;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.sidebar-widget h3 { font-size: 1rem; margin-bottom: 0.75rem; }
.sidebar-widget p { font-size: 0.88rem; color: var(--clr-muted); margin-bottom: 0.75rem; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.sidebar-posts { list-style: none; padding: 0; }
.sidebar-posts li { margin-bottom: 0.5rem; }
.sidebar-posts a { font-size: 0.88rem; }

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .blog-listing-inner { grid-template-columns: 1fr; }
  .blog-sidebar { display: none; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0; right: 0;
    background: #fff;
    padding: 1.5rem;
    border-bottom: 1px solid var(--clr-border);
    box-shadow: var(--shadow-lg);
    gap: 1rem;
  }
  .nav-toggle { display: block; }
  .hero { padding: 4rem 0 3rem; }
  .section-header { flex-direction: column; gap: 0.5rem; text-align: center; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .field-row { grid-template-columns: 1fr; }
}