/* ============================================
   BARIATRIC MEDICAL STORE — MAIN STYLESHEET
   ============================================ */

:root {
  --color-primary: #0d7c66;
  --color-primary-dark: #095c4c;
  --color-primary-light: #e6f4f1;
  --color-accent: #f59e0b;
  --color-accent-dark: #d97706;
  --color-text: #1f2937;
  --color-text-light: #4b5563;
  --color-muted: #6b7280;
  --color-bg: #ffffff;
  --color-bg-soft: #f9fafb;
  --color-bg-section: #f3f7f6;
  --color-border: #e5e7eb;
  --color-success: #10b981;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --content-width: 760px;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

/* TYPOGRAPHY */
h1, h2, h3, h4 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 0.6em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-top: 2em; letter-spacing: -0.015em; }
h3 { font-size: clamp(1.15rem, 2vw, 1.35rem); margin-top: 1.5em; color: var(--color-primary-dark); }
p { margin-bottom: 1.1em; color: var(--color-text-light); }
strong { color: var(--color-text); font-weight: 600; }

/* HEADER & NAVIGATION */
header {
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
header nav[aria-label="Main navigation"] {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
header nav a[aria-label="Bariatric Medical Store home"] {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}
header nav ul {
  display: flex;
  list-style: none;
  gap: 1.75rem;
  flex-wrap: wrap;
}
header nav ul a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}
header nav ul a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* BREADCRUMB */
header nav:not([aria-label="Main navigation"]) {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* MAIN CONTENT */
main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* HERO SECTION (homepage) */
main > section[aria-labelledby="hero-heading"] {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #ffffff;
  padding: 3.5rem 2rem;
  border-radius: var(--radius-lg);
  margin-bottom: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
main > section[aria-labelledby="hero-heading"] h1 {
  color: #ffffff;
  margin-bottom: 1rem;
}
main > section[aria-labelledby="hero-heading"] p {
  color: rgba(255,255,255,0.95);
  font-size: 1.1rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
main > section[aria-labelledby="hero-heading"] a {
  display: inline-block;
  background: var(--color-accent);
  color: #ffffff;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  margin: 0.5rem 0.4rem;
  box-shadow: var(--shadow-md);
  transition: transform 0.15s, background 0.2s;
}
main > section[aria-labelledby="hero-heading"] a:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  text-decoration: none;
}

/* CONTENT SECTIONS */
main > section {
  background: var(--color-bg);
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-border);
}
main > section:last-of-type { border-bottom: none; }

/* CALLOUT / HIGHLIGHT BOX (used inside articles) */
article > p:first-of-type {
  font-size: 1.15rem;
  color: var(--color-text);
  border-left: 4px solid var(--color-primary);
  padding: 1rem 1.25rem;
  background: var(--color-primary-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 2rem;
}

/* ARTICLE TIMESTAMP */
article > p em {
  display: block;
  color: var(--color-muted);
  font-style: normal;
  font-size: 0.9rem;
  background: transparent;
  padding: 0;
  border: none;
  margin-bottom: 2rem;
}

/* FAQ STYLING */
section[aria-labelledby="faq-heading"] h3,
article h3 {
  background: var(--color-bg-section);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
  font-size: 1.1rem;
  margin-top: 2rem;
}

/* CTA BUTTONS (inline in articles) */
article a[href*="amazon.com"],
article a[href*="bariliquidforce.com"],
article a[href*="bariatricapp.com"],
section a[href*="amazon.com"],
section a[href*="bariliquidforce.com"],
section a[href*="bariatricapp.com"] {
  font-weight: 600;
  border-bottom: 2px solid var(--color-primary-light);
}
article a[href*="amazon.com"]:hover,
article a[href*="bariliquidforce.com"]:hover,
article a[href*="bariatricapp.com"]:hover {
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* PRODUCT CARD (optional component) */
.product-card {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}
.product-card h3 { margin-top: 0; color: var(--color-primary); }
.cta-button {
  display: inline-block;
  background: var(--color-primary);
  color: #ffffff !important;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  margin: 0.4rem 0.4rem 0.4rem 0;
  transition: background 0.2s, transform 0.15s;
  border-bottom: none !important;
}
.cta-button:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
  transform: translateY(-1px);
}
.cta-button.accent { background: var(--color-accent); }
.cta-button.accent:hover { background: var(--color-accent-dark); }

/* LISTS */
ul:not(header ul):not(footer ul), ol {
  margin: 0 0 1.2em 1.5em;
  color: var(--color-text-light);
}
li { margin-bottom: 0.4em; }

/* FOOTER */
footer {
  background: var(--color-text);
  color: #d1d5db;
  padding: 2.5rem 1.5rem;
  margin-top: 4rem;
  text-align: center;
  font-size: 0.92rem;
}
footer nav {
  margin-bottom: 1rem;
}
footer nav a {
  color: #ffffff;
  margin: 0 0.5rem;
  font-weight: 500;
}
footer nav a:hover { color: var(--color-accent); }
footer p { color: #9ca3af; margin: 0; }

/* RESPONSIVE */
@media (max-width: 700px) {
  body { font-size: 16px; }
  header nav[aria-label="Main navigation"] { padding: 0.75rem 1rem; }
  header nav ul { gap: 1rem; width: 100%; justify-content: flex-start; }
  main { padding: 1rem 1rem 3rem; }
  main > section[aria-labelledby="hero-heading"] { padding: 2.5rem 1.25rem; }
  main > section[aria-labelledby="hero-heading"] a { display: block; margin: 0.5rem 0; }
}

/* PRINT */
@media print {
  header, footer { display: none; }
  main { max-width: 100%; }
  a { color: var(--color-text); text-decoration: underline; }
}