/**
 * COMPONENTS CSS — DA ĐẸP MỖI NGÀY
 * Tuân thủ mục 5, 6, 7 trong DESIGN.md & PROMPT.md
 */

/* ==========================================================================
   1. ANNOUNCEMENT / TOP BAR
   ========================================================================== */
.topbar {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.75rem; /* 12px */
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 8px var(--container-padding);
  border-bottom: 1px solid var(--color-border);
}

.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-message {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.topbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar-links a {
  color: var(--color-primary);
  font-size: 0.75rem;
}

.topbar-links a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* ==========================================================================
   2. HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  height: var(--header-height);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow var(--duration) var(--ease);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-base);
}

.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.site-brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  border: 1px solid var(--color-border);
}

.site-brand-text {
  display: flex;
  flex-direction: column;
}

.site-brand-title {
  font-family: var(--font-heading);
  font-size: 1.375rem; /* 22px */
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.site-brand-tagline {
  font-family: var(--font-body);
  font-size: 0.6875rem; /* 11px */
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
}

/* Desktop Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-7);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.9375rem; /* 15px */
  font-weight: 500;
  color: var(--color-text-primary);
  padding: 8px 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--duration-fast) var(--ease);
}

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

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

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-dropdown);
  min-width: 220px;
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity var(--duration) var(--ease), transform var(--duration) var(--ease), visibility var(--duration);
  z-index: 110;
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 10px 20px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: background var(--duration-fast) var(--ease), color var(--duration-fast) var(--ease);
}

.dropdown-link:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.cart-btn {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  background: transparent;
  border: 1px solid var(--color-border);
  transition: all var(--duration-fast) var(--ease);
}

.cart-btn:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  border-radius: 50%;
  font-size: 0.6875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-primary);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 380px;
  height: 100%;
  background: var(--color-surface);
  box-shadow: var(--shadow-modal);
  z-index: 1000;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  transition: right var(--duration) var(--ease);
}

.mobile-drawer.is-open {
  right: 0;
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(44, 36, 32, 0.4);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration) var(--ease), visibility var(--duration);
}

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

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-4);
}

.drawer-close {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.drawer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
  overflow-y: auto;
}

.drawer-nav-link {
  font-size: 1.0625rem;
  font-weight: 500;
  padding: 10px 0;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-surface-alt);
  display: block;
}

.drawer-nav-link.active {
  color: var(--color-primary);
  font-weight: 600;
}

.drawer-footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   3. BUTTONS (Spec mục 6.1 DESIGN.md)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-button); /* 999px pill */
  font-family: var(--font-body);
  font-size: 0.9375rem; /* 15px */
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
  border: none;
}

.btn-lg {
  height: 56px;
  padding: 0 40px;
  font-size: 1rem;
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 0.875rem;
}

.btn-block {
  width: 100%;
}

/* Primary Button */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-text-on-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Secondary Button */
.btn-secondary {
  background-color: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}

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

.btn-secondary:active {
  transform: translateY(0);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border: none;
}

.btn-ghost:hover {
  background-color: var(--color-primary-soft);
}

/* Button on Dark */
.btn-on-dark {
  background-color: var(--color-surface);
  color: var(--color-primary-deep);
  box-shadow: var(--shadow-sm);
}

.btn-on-dark:hover {
  background-color: var(--color-surface-alt);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  transform: none !important;
}

/* ==========================================================================
   4. BADGES & TAGS (Spec mục 6.4 DESIGN.md)
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 12px;
  border-radius: var(--radius-badge); /* 999px pill */
  font-family: var(--font-body);
  font-size: 0.75rem; /* 12px */
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.4;
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
}

.badge-secondary {
  background-color: var(--color-secondary-soft);
  color: var(--color-secondary);
}

.badge-success {
  background-color: var(--color-success-soft);
  color: var(--color-success);
}

.badge-warning {
  background-color: var(--color-warning-soft);
  color: var(--color-warning);
}

.badge-error {
  background-color: var(--color-error-soft);
  color: var(--color-error);
}

.badge-neutral {
  background-color: var(--color-surface-alt);
  color: var(--color-text-secondary);
}

.badge-glass {
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(4px);
  color: var(--color-primary);
}

/* ==========================================================================
   5. CARDS (Spec mục 6.2 DESIGN.md)
   ========================================================================== */
/* Blog Card */
.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-base);
  border-radius: var(--radius-card); /* 16px */
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.blog-card-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-surface-alt);
}

.blog-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease);
}

.blog-card:hover .blog-card-media img {
  transform: scale(1.05);
}

.blog-card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
}

.blog-card-body {
  padding: var(--space-6); /* 24px */
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card-title {
  font-family: var(--font-heading);
  font-size: 1.375rem; /* 22px */
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--duration-fast) var(--ease);
}

.blog-card-title a {
  color: inherit;
}

.blog-card:hover .blog-card-title,
.blog-card-title a:hover {
  color: var(--color-primary-hover);
}

.blog-card-excerpt {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-top: 12px;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-meta {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-surface-alt);
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

.blog-card-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* === Blog Card Variant: Compact Horizontal (Dạng thẻ nhỏ gọn) === */
.blog-card-compact {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-base);
  border-radius: var(--radius-card);
  padding: var(--space-4);
  display: flex;
  gap: var(--space-4);
  align-items: center;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.blog-card-compact:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.blog-card-compact-media {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
  border-radius: var(--radius-image);
  overflow: hidden;
  background-color: var(--color-surface-alt);
}

.blog-card-compact-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease);
}

.blog-card-compact:hover .blog-card-compact-media img {
  transform: scale(1.06);
}

.blog-card-compact-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-compact-title {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  line-height: 1.35;
  color: var(--color-text-primary);
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-compact:hover .blog-card-compact-title {
  color: var(--color-primary-hover);
}

.blog-card-compact-meta {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  display: flex;
  gap: 12px;
  align-items: center;
}

/* === Blog Card Variant: Horizontal Wide (Dạng thẻ ngang rộng rãi) === */
.blog-card-horizontal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-base);
  border-radius: var(--radius-card);
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.4fr 0.6fr;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.blog-card-horizontal:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.blog-card-horizontal .blog-card-media {
  aspect-ratio: auto;
  height: 100%;
  min-height: 240px;
}

.blog-card-horizontal .blog-card-body {
  padding: var(--space-7);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

@media (max-width: 767px) {
  .blog-card-horizontal {
    grid-template-columns: 1fr;
  }
  .blog-card-horizontal .blog-card-media {
    aspect-ratio: 4 / 3;
    min-height: auto;
  }
  .blog-card-compact {
    padding: var(--space-3);
    gap: var(--space-3);
  }
  .blog-card-compact-media {
    width: 84px;
    height: 84px;
  }
}

/* Product Card */
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-base);
  border-radius: var(--radius-card); /* 16px */
  padding: var(--space-6); /* 24px */
  display: flex;
  flex-direction: column;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
  position: relative;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.product-card-media {
  position: relative;
  aspect-ratio: 1 / 1;
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-image); /* 12px */
  overflow: hidden;
}

.product-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease);
}

.product-card:hover .product-card-media img {
  transform: scale(1.05);
}

.product-card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  background: var(--color-primary);
  color: var(--color-text-on-primary);
}

.product-card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem; /* 20px */
  margin-top: 16px;
  margin-bottom: 0;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-title a {
  color: var(--color-text-primary);
}

.product-card-title a:hover {
  color: var(--color-primary);
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 0.875rem;
}

.stars {
  color: var(--color-warning);
  letter-spacing: 2px;
  font-size: 0.875rem;
}

.rating-count {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

.product-price-box {
  margin-top: 12px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.product-card .btn-secondary {
  margin-top: 16px;
  width: 100%;
}

/* Feature & Service Card */
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-base);
  border-radius: var(--radius-card);
  padding: var(--space-7); /* 32px */
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-5);
}

.feature-icon-box.secondary {
  background-color: var(--color-secondary-soft);
  color: var(--color-secondary);
}

.feature-card h4 {
  margin-bottom: var(--space-3);
}

.feature-card p {
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

/* Testimonial Card */
.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-base);
  border-radius: var(--radius-card);
  padding: var(--space-7);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-quote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-avatar);
  object-fit: cover;
  border: 2px solid var(--color-primary-soft);
}

.author-name {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.author-role {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

/* Team Member Card */
.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-base);
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.team-card-media {
  aspect-ratio: 1 / 1.1;
  background-color: var(--color-surface-alt);
  overflow: hidden;
}

.team-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease);
}

.team-card:hover .team-card-media img {
  transform: scale(1.04);
}

.team-card-body {
  padding: var(--space-6);
  text-align: center;
}

.team-card-role {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.team-card-bio {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
  margin-bottom: 0;
}

/* Pricing Card */
.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--space-8);
  box-shadow: var(--shadow-base);
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.pricing-card.featured {
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-hover);
}

.pricing-badge-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-text-on-primary);
}

.pricing-header {
  text-align: center;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.pricing-price {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: var(--space-3) 0 var(--space-2);
}

.pricing-feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  flex: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.pricing-check {
  color: var(--color-success);
  font-weight: 700;
  font-size: 1rem;
}

/* ==========================================================================
   6. FORMS & INPUTS (Spec mục 6.3 DESIGN.md)
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-5); /* 20px */
}

.form-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.875rem; /* 14px */
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2); /* 8px */
}

.form-control {
  width: 100%;
  height: 48px;
  padding: 12px 16px;
  border-radius: var(--radius-input); /* 8px */
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 1rem; /* 16px bắt buộc tránh zoom iOS */
  color: var(--color-text-primary);
  transition: border-color var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease);
}

.form-control::placeholder {
  color: var(--color-text-tertiary);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(168, 87, 104, 0.15);
  outline: none;
}

textarea.form-control {
  min-height: 120px;
  height: auto;
  resize: vertical;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23A85768' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-error-msg {
  font-size: 0.8125rem;
  color: var(--color-error);
  margin-top: 6px;
}

/* ==========================================================================
   7. ACCORDION / FAQ
   ========================================================================== */
.accordion-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: var(--space-4);
  overflow: hidden;
  transition: border-color var(--duration-fast) var(--ease);
}

.accordion-header {
  width: 100%;
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: transparent;
  border: none;
  text-align: left;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease);
}

.accordion-header:hover {
  color: var(--color-primary);
}

.accordion-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: transform var(--duration) var(--ease);
  flex-shrink: 0;
}

.accordion-item.is-open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration) var(--ease);
  padding: 0 var(--space-6);
}

.accordion-item.is-open .accordion-body {
  max-height: 400px;
  padding-bottom: var(--space-5);
}

.accordion-body p {
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   8. PROCESS STEPS (Quy trình 4 bước chuẩn y khoa)
   ========================================================================== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  position: relative;
}

.process-step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--space-6);
  position: relative;
  box-shadow: var(--shadow-base);
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.process-step h4 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
}

.process-step p {
  font-size: 0.875rem;
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   9. BEFORE / AFTER COMPARISON
   ========================================================================== */
.transformation-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-base);
}

.transformation-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  position: relative;
}

.transformation-item {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.transformation-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.transformation-tag {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(44, 36, 32, 0.7);
  color: var(--color-text-on-primary);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.transformation-tag.after {
  background: var(--color-primary);
}

.transformation-body {
  padding: var(--space-6);
}

/* ==========================================================================
   10. STATS COUNTERS
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  text-align: center;
}

.stat-item {
  padding: var(--space-5);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ==========================================================================
   11. TRUST / LOGO BAR
   ========================================================================== */
.trust-bar {
  padding: var(--space-7) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.trust-title {
  text-align: center;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-tertiary);
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.trust-logos {
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: var(--space-6);
  opacity: 0.8;
}

.trust-logo-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-tertiary);
}

.trust-logo-item svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-secondary);
}

/* ==========================================================================
   12. CTA BANNER (Deep Background #46303A)
   ========================================================================== */
.cta-banner {
  background-color: var(--color-primary-deep);
  color: var(--color-text-on-deep);
  border-radius: 24px;
  padding: var(--space-11) var(--space-9); /* 80px 48px */
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-base);
}

.cta-banner h2 {
  color: var(--color-text-on-deep);
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
}

.cta-banner p {
  color: rgba(243, 236, 230, 0.85);
  max-width: 36rem;
  margin: 0 auto var(--space-7);
}

.cta-banner .btn-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

/* ==========================================================================
   13. FOOTER (Deep Background #46303A)
   ========================================================================== */
.site-footer {
  background-color: var(--color-primary-deep);
  color: var(--color-text-on-deep);
  padding-top: var(--space-12); /* 96px */
  padding-bottom: var(--space-8);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-9);
  margin-bottom: var(--space-10);
}

.footer-col h5 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-text-on-deep);
  margin-bottom: var(--space-5);
  font-weight: 600;
}

.footer-desc {
  font-size: 0.875rem;
  color: rgba(243, 236, 230, 0.75);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav a {
  color: rgba(243, 236, 230, 0.75);
  font-size: 0.875rem;
  transition: color var(--duration-fast) var(--ease);
}

.footer-nav a:hover {
  color: var(--color-text-on-deep);
  padding-left: 4px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.875rem;
  color: rgba(243, 236, 230, 0.75);
  margin-bottom: var(--space-3);
}

.footer-contact-item svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  stroke: var(--color-primary-soft);
  margin-top: 3px;
}

.footer-socials {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.social-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-on-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-fast) var(--ease), transform var(--duration-fast) var(--ease);
}

.social-icon-btn:hover {
  background: var(--color-primary);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid rgba(243, 236, 230, 0.12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: rgba(243, 236, 230, 0.6);
}

.footer-legal-links {
  display: flex;
  gap: var(--space-5);
}

.footer-legal-links a {
  color: rgba(243, 236, 230, 0.6);
}

.footer-legal-links a:hover {
  color: var(--color-text-on-deep);
}

/* ==========================================================================
   14. BREADCRUMBS & PAGINATION
   ========================================================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-5);
}

.breadcrumb a {
  color: var(--color-text-tertiary);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-separator {
  color: var(--color-border-strong);
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-10);
}

.page-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all var(--duration-fast) var(--ease);
}

.page-link:hover,
.page-link.active {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  border-color: var(--color-primary);
}

/* ==========================================================================
   15. MODAL DIALOG & TOAST NOTIFICATION
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(44, 36, 32, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--container-padding);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration) var(--ease), visibility var(--duration);
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: var(--color-surface);
  border-radius: var(--radius-modal); /* 20px */
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 540px;
  padding: var(--space-8);
  position: relative;
  transform: scale(0.96);
  transition: transform var(--duration) var(--ease);
}

.modal-backdrop.is-open .modal-card {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-surface-alt);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close-btn:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  background: var(--color-text-primary);
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: var(--radius-button);
  box-shadow: var(--shadow-hover);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  font-weight: 500;
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--duration) var(--ease);
  pointer-events: auto;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   16. RESPONSIVE QUERIES FOR COMPONENTS
   ========================================================================== */
@media (max-width: 1023px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-7);
  }
}

@media (max-width: 767px) {
  .topbar {
    display: none; /* Ẩn topbar trên mobile để tinh gọn */
  }

  .main-nav {
    display: none; /* Ẩn nav desktop */
  }

  .mobile-toggle {
    display: flex;
  }

  .header-actions .btn {
    display: none; /* Ẩn nút to trên header mobile, đã có trong drawer */
  }

  .process-grid,
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .cta-banner {
    padding: var(--space-8) var(--space-6);
  }

  .cta-banner .btn-group {
    flex-direction: column;
    width: 100%;
  }

  .cta-banner .btn {
    width: 100%;
  }

  .pricing-card {
    padding: var(--space-6);
  }
}