/* ==========================================================================
   Vitora Health & Men's Wellness Institute - Core Stylesheet
   Established 2014 | Independent Peer-Reviewed Health Journalism
   ========================================================================== */

:root {
  --font-serif: "Merriweather", "Georgia", "Cambria", "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  --color-primary: #15803d;
  --color-primary-dark: #0f5c2b;
  --color-primary-light: #22c55e;
  --color-navy: #0f2b48;
  --color-navy-dark: #09192b;
  --color-navy-light: #1e3a5f;
  
  --color-accent: #d97706;
  --color-accent-light: #fef3c7;
  
  --color-text-main: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  
  --color-bg-light: #f8fafc;
  --color-bg-card: #ffffff;
  --color-border: #e2e8f0;
  --color-border-subtle: #f1f5f9;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  color: var(--color-text-main);
}

main {
  flex: 1 0 auto;
}

h1, h2, h3, .font-serif-title {
  font-family: var(--font-serif);
  letter-spacing: -0.015em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.institutional-topbar {
  background: #09192b;
  color: #cbd5e1;
  font-size: 0.8125rem;
  padding: 0.45rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.institutional-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(217, 119, 6, 0.18);
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.35);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-header {
  background: #15803d;
  color: #ffffff;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-nav-link {
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.site-nav-link:hover, .site-nav-link.active {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.15);
}

#reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #22c55e, #38bdf8);
  width: 0%;
  z-index: 1100;
  transition: width 0.1s ease-out;
}

.hero-editorial {
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  border-bottom: 1px solid var(--color-border);
}

.stamp-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.counter-box {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.counter-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.counter-number {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.editorial-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.editorial-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: #94a3b8;
}

.editorial-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.editorial-card:hover .editorial-card-img {
  transform: scale(1.03);
}

.editorial-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.peer-review-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: #166534;
  background: #dcfce7;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.citation-box {
  background: #f8fafc;
  border-left: 4px solid var(--color-primary);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
}

.calculator-panel {
  background: linear-gradient(135deg, #0f2b48 0%, #1e3a5f 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-xl);
}

.calc-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.calc-input:focus {
  outline: none;
  border-color: #38bdf8;
  background: rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
}

.calc-input option {
  background: #0f2b48;
  color: #ffffff;
}

.calc-result-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.875rem;
  background: #ffffff;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-navy);
}

.faq-header .faq-icon {
  transition: transform 0.25s ease;
}

.faq-item.active .faq-header .faq-icon {
  transform: rotate(180deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: #f8fafc;
}

.faq-item.active .faq-body {
  max-height: 500px;
}

.faq-content {
  padding: 1.25rem 1.5rem;
  color: #475569;
  line-height: 1.65;
  border-top: 1px solid var(--color-border-subtle);
}

.filter-tab-btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  background: #ffffff;
  color: #475569;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab-btn:hover, .filter-tab-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.compliance-table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.compliance-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.compliance-table th {
  background: #f1f5f9;
  color: var(--color-navy);
  padding: 0.875rem 1.25rem;
  font-weight: 700;
  border-bottom: 2px solid var(--color-border);
}

.compliance-table td {
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--color-border-subtle);
  color: #334155;
}

.compliance-table tr:last-child td {
  border-bottom: none;
}

.compliance-table tr:nth-child(even) td {
  background: #f8fafc;
}

.editorial-notice-box {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
  color: #166534;
  font-size: 0.875rem;
  line-height: 1.5;
}

#scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 990;
  font-size: 1.25rem;
  transition: all var(--transition-normal);
}

#scroll-top-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.custom-toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: #0f172a;
  color: #ffffff;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  z-index: 10000;
  font-size: 0.9375rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.custom-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 768px) {
  .calculator-panel {
    padding: 1.5rem;
  }
  .counter-box {
    padding: 1.25rem;
  }
}