/* ==========================================================================
   AURORA ARTHRO - KINETIC ARTICULAR SCIENCES
   Design Preset: Swiss Bio-Clinic & Alpine Copper
   Palette: Alpine White (#ffffff), Glacier Slate (#f8fafc), Deep Navy (#0e2038),
            Polished Copper (#c58f44), Bio-Cyan (#0284c7), Alpine Pine (#0f766e)
   ========================================================================== */

:root {
  /* Colors */
  --color-primary: #0e2038;
  --color-primary-dark: #071220;
  --color-primary-light: #1e3a5f;
  
  --color-copper: #c58f44;
  --color-copper-hover: #b07c33;
  --color-copper-light: #fef7ec;
  --color-copper-border: #edd5b3;
  
  --color-glacier: #0284c7;
  --color-glacier-light: #e0f2fe;
  --color-pine: #0f766e;
  --color-pine-light: #f0fdfa;
  
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-subtle: #edf2f7;
  
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  
  /* Layout & Elevations */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 3px rgba(14, 32, 56, 0.06), 0 1px 2px rgba(14, 32, 56, 0.04);
  --shadow-md: 0 4px 14px rgba(14, 32, 56, 0.08), 0 2px 6px rgba(14, 32, 56, 0.04);
  --shadow-lg: 0 12px 28px rgba(14, 32, 56, 0.12), 0 4px 10px rgba(14, 32, 56, 0.06);
  --shadow-xl: 0 24px 48px -12px rgba(14, 32, 56, 0.18);
  --shadow-copper: 0 8px 24px rgba(197, 143, 68, 0.28);
  
  --container-max: 1200px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* Typography styles */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  font-weight: 700;
  line-height: 1.25;
}

.font-serif {
  font-family: var(--font-serif);
}

.text-copper { color: var(--color-copper); }
.text-pine { color: var(--color-pine); }
.text-glacier { color: var(--color-glacier); }
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.container-narrow {
  max-width: 860px;
}

/* ==========================================================================
   NAVIGATION & HEADER (Mobile-First Rule: 1 line <480px)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background-color: rgba(255, 255, 255, 0.98);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 12px;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  flex-shrink: 0;
}

.brand-badge-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-copper);
  border: 1px solid rgba(197, 143, 68, 0.35);
  box-shadow: 0 2px 6px rgba(14, 32, 56, 0.15);
}

.brand-badge-icon svg {
  width: 20px;
  height: 20px;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.brand-tag {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-copper);
  font-weight: 700;
}

/* Desktop Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 6px 4px;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-copper);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-copper);
  border-radius: 2px;
}

/* Header Utilities */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Language Switcher */
.lang-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
  transition: var(--transition);
}

.lang-toggle-btn:hover {
  background: #e2e8f0;
  border-color: #cbd5e1;
}

.lang-toggle-btn span.lang-code {
  font-weight: 800;
  color: var(--color-copper);
}

/* Cart Trigger Button */
.cart-trigger-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #ffffff;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(14, 32, 56, 0.15);
}

.cart-trigger-btn:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

.cart-badge {
  position: absolute;
  top: -3px;
  right: -3px;
  background: var(--color-copper);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 800;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #ffffff;
}

/* Mobile Hamburger Toggle */
.mobile-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
}

/* Mobile Drawer */
.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 32, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.mobile-drawer-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  max-width: 85vw;
  height: 100%;
  background: #ffffff;
  z-index: 1600;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer.open {
  transform: translateX(-320px);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--color-border);
}

.drawer-close-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}

.drawer-nav-list {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
  flex: 1;
}

.drawer-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
}

.drawer-nav-link.active,
.drawer-nav-link:hover {
  background: var(--color-copper-light);
  color: var(--color-copper);
}

.drawer-footer {
  padding: 20px;
  border-top: 1px solid var(--color-border);
  background: #f8fafc;
}

/* ==========================================================================
   BUTTONS & BADGES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  min-height: 46px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-copper) 0%, #b37830 100%);
  color: #ffffff;
  box-shadow: var(--shadow-copper);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #d49a4d 0%, var(--color-copper) 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(197, 143, 68, 0.38);
}

.btn-secondary {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1.5px solid var(--color-copper);
  color: var(--color-copper);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-copper);
  color: #ffffff;
}

.btn-outline-navy {
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline-navy:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-sm {
  padding: 8px 16px;
  min-height: 38px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 32px;
  min-height: 52px;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-full);
}

.pill-copper {
  background: var(--color-copper-light);
  color: var(--color-copper);
  border: 1px solid var(--color-copper-border);
}

.pill-glacier {
  background: var(--color-glacier-light);
  color: var(--color-glacier);
  border: 1px solid rgba(2, 132, 199, 0.2);
}

.pill-pine {
  background: var(--color-pine-light);
  color: var(--color-pine);
  border: 1px solid rgba(15, 118, 110, 0.2);
}

/* ==========================================================================
   HERO SECTIONS
   ========================================================================== */
.hero-section {
  padding: 60px 0;
  background: linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 2.75rem;
  margin: 18px 0;
  letter-spacing: -0.02em;
}

.hero-lead {
  font-size: 1.18rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-visual {
  position: relative;
}

.hero-image-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(14, 32, 56, 0.08);
  background: #ffffff;
  position: relative;
}

.hero-image-card img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  object-position: center top;
}

.hero-caption {
  padding: 16px 20px;
  background: #ffffff;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.stat-item h3 {
  font-size: 1.9rem;
  color: var(--color-copper);
  font-weight: 800;
  line-height: 1;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 6px;
  line-height: 1.35;
}

/* ==========================================================================
   SECTIONS & GRIDS
   ========================================================================== */
.section {
  padding: 80px 0;
}

.section-alt {
  background-color: #ffffff;
}

.section-dark {
  background-color: var(--color-primary);
  color: #ffffff;
}

.section-dark h2,
.section-dark h3 {
  color: #ffffff;
}

.section-dark .text-muted {
  color: #94a3b8;
}

.section-header {
  margin-bottom: 48px;
}

.section-title {
  font-size: 2.2rem;
  letter-spacing: -0.01em;
  margin-top: 12px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 12px auto 0;
}

/* Feature Cards & Grid */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-copper);
  margin-bottom: 20px;
}

/* ==========================================================================
   ANATOMY INFOGRAPHIC (Interactive & Crisp)
   ========================================================================== */
.anatomy-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 36px;
  box-shadow: var(--shadow-lg);
}

.anatomy-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.anatomy-svg-wrapper {
  background: radial-gradient(circle at center, #f0f7ff 0%, #f8fafc 100%);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border);
  text-align: center;
}

.anatomy-points {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.point-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  border-left: 4px solid var(--color-copper);
  transition: var(--transition);
}

.point-item:hover {
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.point-num {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-copper);
  min-width: 28px;
}

.point-content h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.point-content p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   INTERACTIVE TABS & CALCULATORS
   ========================================================================== */
.tabs-nav {
  display: flex;
  background: var(--color-surface-alt);
  padding: 6px;
  border-radius: var(--radius-md);
  gap: 6px;
  margin-bottom: 36px;
  border: 1px solid var(--color-border);
}

.tab-btn {
  flex: 1;
  padding: 14px 20px;
  min-height: 48px;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.tab-btn.active {
  background: #ffffff;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active) {
  color: var(--color-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Range Slider & Form Elements */
.calc-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 36px;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: var(--color-primary);
}

.range-slider-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
}

.range-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 8px;
  border-radius: 4px;
  background: #e2e8f0;
  outline: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-copper);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(197, 143, 68, 0.4);
  border: 3px solid #ffffff;
  transition: transform 0.15s ease;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.range-val-badge {
  min-width: 80px;
  padding: 8px 14px;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 800;
  font-size: 1.1rem;
  border-radius: var(--radius-sm);
  text-align: center;
}

.btn-radio-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.btn-radio {
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #ffffff;
  font-weight: 600;
  font-size: 0.9rem;
  text-align: center;
  transition: var(--transition);
}

.btn-radio:hover {
  border-color: var(--color-copper);
}

.btn-radio.active {
  border-color: var(--color-copper);
  background: var(--color-copper-light);
  color: var(--color-copper);
  font-weight: 700;
}

/* Water Results Box */
.water-result-card {
  background: linear-gradient(135deg, #0e2038 0%, #1e3a5f 100%);
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: 30px;
  margin-top: 30px;
  text-align: center;
}

.water-total-num {
  font-size: 3.2rem;
  font-weight: 800;
  color: #38bdf8;
  line-height: 1.1;
  margin: 10px 0;
}

.water-schedule-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.schedule-slot {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.schedule-slot h5 {
  color: #bae6fd;
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.schedule-slot .amount {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
}

/* WOMAC Test Quiz */
.womac-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 36px;
  box-shadow: var(--shadow-lg);
}

.womac-progress-bar {
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 28px;
}

.womac-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-copper) 0%, #0284c7 100%);
  width: 20%;
  transition: width 0.3s ease;
}

.womac-question {
  display: none;
}

.womac-question.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.womac-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.womac-opt-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--color-surface-alt);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-align: left;
  transition: var(--transition);
}

.womac-opt-btn:hover {
  background: #ffffff;
  border-color: var(--color-copper);
}

.womac-opt-btn.selected {
  background: var(--color-copper-light);
  border-color: var(--color-copper);
  color: var(--color-copper);
}

.womac-result-box {
  display: none;
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 32px;
  border: 2px solid var(--color-border);
  animation: fadeIn 0.4s ease;
}

/* ==========================================================================
   CERTIFICATES GRID & LIGHTBOX
   ========================================================================== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.cert-diploma-card {
  background: #ffffff;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.cert-diploma-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-copper);
  box-shadow: var(--shadow-lg);
}

.cert-border-inner {
  border: 1.5px solid rgba(197, 143, 68, 0.4);
  padding: 24px;
  border-radius: var(--radius-sm);
  position: relative;
  background: radial-gradient(circle at center, #ffffff 60%, #faf8f5 100%);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cert-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(197, 143, 68, 0.25);
  padding-bottom: 14px;
  margin-bottom: 16px;
}

.cert-crest {
  width: 48px;
  height: 48px;
}

.cert-reg {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.cert-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.cert-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 20px;
  flex: 1;
}

.cert-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-top: 1px solid rgba(197, 143, 68, 0.25);
  padding-top: 14px;
}

.cert-seal {
  width: 60px;
  height: 60px;
}

.cert-signature {
  font-family: 'Brush Script MT', cursive, var(--font-serif);
  font-size: 1.4rem;
  color: #334155;
}

/* Lightbox Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 32, 0.85);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lightbox-modal.open {
  display: flex;
  animation: fadeIn 0.25s ease;
}

.lightbox-dialog {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 720px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 36px;
  position: relative;
  box-shadow: var(--shadow-xl);
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  font-size: 1.3rem;
  font-weight: 700;
}

/* ==========================================================================
   FORMULA MATRIX & PRODUCT PACKAGES
   ========================================================================== */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-bottom: 60px;
}

.matrix-item {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 20px;
  transition: var(--transition);
}

.matrix-item:hover {
  transform: translateY(-4px);
  border-color: var(--color-copper);
  box-shadow: var(--shadow-md);
}

.matrix-dose {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-copper);
  line-height: 1;
}

/* Package Tier Cards */
.packages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.package-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.package-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.package-card.featured {
  border-color: var(--color-copper);
  box-shadow: var(--shadow-copper);
  background: linear-gradient(180deg, #fffdfa 0%, #ffffff 100%);
}

.package-badge-top {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-copper) 0%, #b37830 100%);
  color: #ffffff;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.package-header {
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}

.package-title {
  font-size: 1.35rem;
  margin-bottom: 6px;
}

.package-subtitle {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.package-image {
  margin: 16px auto;
  max-height: 190px;
  object-fit: contain;
}

.package-benefits {
  margin-bottom: 28px;
  flex: 1;
}

.package-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 10px;
}

.package-benefits li svg {
  width: 18px;
  height: 18px;
  color: var(--color-pine);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   CART DRAWER & CHECKOUT
   ========================================================================== */
.cart-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 32, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1800;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.cart-drawer-overlay.open {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: -420px;
  width: 390px;
  max-width: 90vw;
  height: 100%;
  background: #ffffff;
  z-index: 1900;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.cart-drawer.open {
  transform: translateX(-420px);
}

.cart-drawer-header {
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}

.cart-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 22px;
}

.cart-item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.cart-item-img {
  width: 65px;
  height: 65px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  padding: 4px;
}

.cart-item-info {
  flex: 1;
}

.cart-item-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.cart-item-price {
  font-weight: 800;
  color: var(--color-copper);
}

.cart-qty-ctrl {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.qty-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  border: 1px solid var(--color-border);
}

.cart-remove-btn {
  color: var(--color-danger);
  font-size: 0.8rem;
  margin-left: auto;
}

.cart-drawer-footer {
  padding: 20px 22px;
  border-top: 1px solid var(--color-border);
  background: #f8fafc;
}

.cart-summary-line {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.cart-summary-total {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}

/* Checkout Page Styles */
.checkout-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
}

.checkout-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.checkout-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-full {
  grid-column: span 2;
}

.input-field {
  width: 100%;
  padding: 12px 14px;
  min-height: 48px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background: #ffffff;
  outline: none;
  transition: var(--transition);
}

.input-field:focus {
  border-color: var(--color-copper);
  box-shadow: 0 0 0 3px rgba(197, 143, 68, 0.15);
}

.payment-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
}

.payment-option-label {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background: #ffffff;
  cursor: pointer;
  transition: var(--transition);
}

.payment-option-label:hover {
  border-color: var(--color-copper);
}

.payment-option-label input[type="radio"]:checked + .payment-content {
  color: var(--color-copper);
}

.trust-badges-bar {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 18px 0;
  margin-top: 24px;
  border-top: 1px solid var(--color-border);
  gap: 12px;
}

.trust-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
}

/* ==========================================================================
   DIARY & STORY TIMELINE
   ========================================================================== */
.timeline {
  position: relative;
  padding-left: 32px;
  margin: 36px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 11px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
}

.timeline-node {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-copper);
  border: 4px solid #ffffff;
  box-shadow: 0 0 0 2px var(--color-copper);
}

.timeline-content {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   ARTICLES & BLOG POSTS
   ========================================================================== */
.article-header {
  padding: 50px 0 30px;
  text-align: center;
}

.article-body {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #334155;
}

.article-body p {
  margin-bottom: 24px;
}

.article-body h2 {
  font-size: 1.8rem;
  margin: 40px 0 16px;
  color: var(--color-primary);
}

.article-body h3 {
  font-size: 1.4rem;
  margin: 32px 0 14px;
}

.article-body blockquote {
  border-left: 4px solid var(--color-copper);
  padding: 18px 24px;
  background: var(--color-copper-light);
  margin: 28px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--color-primary);
}

.article-body ul, .article-body ol {
  margin: 20px 0 24px 20px;
}

.article-body li {
  margin-bottom: 10px;
  list-style: disc;
}

/* ==========================================================================
   COOKIE BANNER & TOAST NOTIFICATION
   ========================================================================== */
.cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  max-width: 580px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  padding: 20px 24px;
  z-index: 2500;
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translateY(40px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.cookie-banner p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.cookie-btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.toast {
  position: fixed;
  top: 85px;
  right: 20px;
  background: var(--color-primary);
  color: #ffffff;
  padding: 14px 22px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 2400;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  border-left: 4px solid var(--color-copper);
  animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
  from { transform: translateX(50px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--color-primary);
  color: #94a3b8;
  padding: 70px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand h4 {
  color: #ffffff;
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.footer-col h5 {
  color: #ffffff;
  font-size: 1rem;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--color-copper);
}

.footer-disclaimer {
  font-size: 0.78rem;
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  color: #64748b;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #64748b;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   MOBILE FIRST RESPONSIVENESS & STRICT HEADER RULE (<480px)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .hero-image-card img {
    height: 380px;
  }
  
  .anatomy-layout {
    grid-template-columns: 1fr;
  }
  
  .matrix-grid {
    grid-template-columns: 1fr;
  }
  
  .packages-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
    margin: 0 auto;
  }
  
  .checkout-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .nav-menu {
    display: none;
  }
  
  .mobile-nav-toggle {
    display: inline-flex;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 50px 0;
  }
  
  .hero-content h1 {
    font-size: 2.1rem;
  }
  
  .hero-stats-row {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  
  .grid-2, .grid-3, .grid-4, .cert-grid {
    grid-template-columns: 1fr;
  }
  
  .btn-radio-group {
    grid-template-columns: 1fr;
  }
  
  .tabs-nav {
    flex-direction: column;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .checkout-form-grid {
    grid-template-columns: 1fr;
  }
  
  .form-full {
    grid-column: span 1;
  }
}

/* STRICT RULE FOR MOBILE SCREENS < 480PX: EXACTLY 1 COMPACT LINE WITHOUT WRAPS:
   [LOGO] [🇮🇹 IT | 🇬🇧 EN] [🛒 0] [☰] */
@media (max-width: 480px) {
  .header-inner {
    height: 60px;
    gap: 6px;
    justify-content: space-between;
  }
  
  .brand-logo {
    gap: 6px;
  }
  
  .brand-badge-icon {
    width: 32px;
    height: 32px;
  }
  
  .brand-name {
    font-size: 0.95rem;
  }
  
  .brand-tag {
    font-size: 0.55rem;
  }
  
  .header-actions {
    gap: 6px;
  }
  
  .lang-toggle-btn {
    padding: 4px 6px;
    font-size: 0.72rem;
    min-height: 40px;
    min-width: 40px;
    gap: 2px;
  }
  
  .cart-trigger-btn {
    width: 40px;
    height: 40px;
  }
  
  .mobile-nav-toggle {
    width: 40px;
    height: 40px;
  }
}