/* ══════════════════════════════════════════════════════════════════════
   MsTechToy — Global Stylesheet
   Tech-Toy Brand: Clean, modern, confident.
   Zero framework. CSS Grid + Flexbox. Mobile-first responsive.
   ══════════════════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ── */
:root {
  /* Brand palette */
  --color-primary: #1A1F36;        /* Deep navy — trust, stability */
  --color-primary-light: #2D3558;
  --color-accent: #FF6B35;         /* Electric orange — energy, tech */
  --color-accent-hover: #E85D2A;
  --color-accent-light: #FFF3ED;

  /* Neutrals */
  --color-surface: #F8F9FB;
  --color-surface-alt: #F0F2F5;
  --color-border: #E2E6EC;
  --color-border-light: #EDF0F4;

  /* Text */
  --color-text: #2D3436;
  --color-text-secondary: #636E72;
  --color-text-muted: #9BA4AA;
  --color-text-inverse: #FFFFFF;

  /* Status */
  --color-success: #27AE60;
  --color-error: #E74C3C;
  --color-warning: #F39C12;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Sizes */
  --container-max: 1200px;
  --container-narrow: 900px;
  --header-height: 72px;

  /* Spacing scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.10);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: #FFFFFF;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  line-height: 1.25;
  font-weight: 700;
}

h1 { font-size: clamp(2.25rem, 4vw, 3.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h4 { font-size: 1.125rem; }

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.container--narrow {
  max-width: var(--container-narrow);
}

/* ── Section Spacing ── */
.section {
  padding: var(--space-3xl) 0;
}
.section--alt {
  background: var(--color-surface);
}
.section--dark {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.section--dark h2,
.section--dark h3 {
  color: var(--color-text-inverse);
}

/* ── Section Header ── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}
.section-header h2 {
  margin-bottom: var(--space-md);
}
.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}
.section--dark .section-header p {
  color: rgba(255,255,255,0.75);
}

/* ── Site Header / Navigation ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--color-border-light);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--color-primary); }
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 1.1rem;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.925rem;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  background: var(--color-surface);
}
.nav-cta {
  margin-left: var(--space-sm);
  padding: var(--space-sm) var(--space-lg) !important;
  background: var(--color-accent) !important;
  color: #fff !important;
  border-radius: var(--radius-full) !important;
  font-weight: 600 !important;
  transition: background var(--transition-fast), transform var(--transition-fast) !important;
}
.nav-cta:hover {
  background: var(--color-accent-hover) !important;
  transform: translateY(-1px);
}

/* Mobile Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  line-height: 1.2;
}
.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
}
.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  background: var(--color-surface);
  transform: translateY(-2px);
}
.btn--white {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.btn--white:hover {
  background: var(--color-surface);
  border-color: var(--color-surface);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}
.btn--lg {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* ── Cards ── */
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.card:hover .card__image {
  transform: scale(1.05);
}
.card__image-wrap {
  overflow: hidden;
  position: relative;
}
.card__badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  z-index: 2;
  background: var(--color-accent);
  color: #fff;
}
.card__video-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0,0,0,0.65);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  font-size: 0.8rem;
}
.card__body {
  padding: var(--space-lg);
}
.card__category {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}
.card__title {
  font-size: 1.15rem;
  margin-bottom: var(--space-sm);
}
.card__title a {
  color: var(--color-primary);
}
.card__title a:hover {
  color: var(--color-accent);
}
.card__text {
  color: var(--color-text-secondary);
  font-size: 0.925rem;
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

/* ── Card Grid ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.card-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}
.card-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

/* ── Filter Tags (Pills) ── */
.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}
.filter-tag {
  padding: 10px 24px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  background: #fff;
  color: var(--color-text-secondary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.filter-tag.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* ── Forms ── */
.form-group {
  margin-bottom: var(--space-lg);
}
.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary);
}
.form-group .required::after {
  content: ' *';
  color: var(--color-error);
}
.form-control {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.12);
}
.form-control::placeholder {
  color: var(--color-text-muted);
}
textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

.form-message {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-top: var(--space-md);
  font-weight: 500;
  display: none;
}
.form-message--success {
  display: block;
  background: #E8F8EF;
  color: #1B7A3D;
  border: 1px solid #A3E4BC;
}
.form-message--error {
  display: block;
  background: #FDEAEA;
  color: #C0392B;
  border: 1px solid #F5BCBC;
}

/* ── Hero Section ── */
.hero {
  padding: calc(var(--header-height) + var(--space-4xl)) 0 var(--space-4xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, #1A2540 100%);
  color: var(--color-text-inverse);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,53,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,53,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 1;
}
.hero h1 {
  color: #fff;
  margin-bottom: var(--space-lg);
  max-width: 750px;
  margin-left: auto;
  margin-right: auto;
}
.hero__subtitle {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: rgba(255,255,255,0.8);
  max-width: 580px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
}
.hero__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Value Props Cards ── */
.value-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.value-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--color-border-light);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.value-card__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-lg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
.value-card__icon--curated {
  background: #FFF3ED;
  color: var(--color-accent);
}
.value-card__icon--compliance {
  background: #E8F8EF;
  color: var(--color-success);
}
.value-card__icon--ready {
  background: #EBF0FF;
  color: #3B6DF0;
}
.value-card h3 {
  margin-bottom: var(--space-sm);
}
.value-card p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ── Category Cards ── */
.cat-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.cat-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: flex-end;
  cursor: pointer;
  transition: transform var(--transition-base);
}
.cat-card:hover {
  transform: translateY(-6px);
}
.cat-card__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform var(--transition-slow);
}
.cat-card:hover .cat-card__bg {
  transform: scale(1.08);
}
.cat-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,31,54,0.85) 0%, rgba(26,31,54,0.2) 50%, transparent 100%);
}
.cat-card__content {
  position: relative;
  z-index: 1;
  padding: var(--space-xl);
  color: #fff;
}
.cat-card__content h3 {
  color: #fff;
  margin-bottom: 4px;
}
.cat-card__content p {
  opacity: 0.85;
  font-size: 0.9rem;
}

/* ── Steps (How It Works) ── */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  counter-reset: step;
}
.step {
  text-align: center;
  position: relative;
}
.step__number {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-lg);
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 1.35rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step h3 {
  margin-bottom: var(--space-sm);
}
.step p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ── Trust Bar / Compliance Strip ── */
.trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  flex-wrap: wrap;
  padding: var(--space-2xl);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}
.trust-bar__item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.95rem;
}
.trust-bar__icon {
  font-size: 1.5rem;
}

/* ── CTA Section ── */
.cta-section {
  text-align: center;
  padding: var(--space-4xl) 0;
}
.cta-section h2 {
  margin-bottom: var(--space-md);
}
.cta-section p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  font-size: 1.1rem;
}
.section--dark .cta-section p {
  color: rgba(255,255,255,0.75);
}

/* ── Page Header (inner pages) ── */
.page-header {
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  background: var(--color-primary);
  color: #fff;
  text-align: center;
}
.page-header h1 {
  color: #fff;
  margin-bottom: var(--space-md);
}
.page-header p {
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto;
}
.page-header--short {
  padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-2xl);
}

/* ── Product Detail Page (Shopify-Style: Left Gallery + Right Info) ── */

/* Body class to strip page-level spacing */
.detail-page #detail-main {
  padding-top: var(--header-height);
}

/* Breadcrumb — compact, contained */
.detail-breadcrumb {
  padding: var(--space-md) 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  background: #fff;
  border-bottom: 1px solid var(--color-border-light);
}
.detail-breadcrumb a { color: var(--color-text-secondary); }
.detail-breadcrumb a:hover { color: var(--color-accent); }
.detail-breadcrumb span { margin: 0 4px; }

/* ── Two-Column Hero Section ── */
.detail-hero {
  padding: var(--space-2xl) 0 var(--space-3xl);
  background: #fff;
}

.detail-hero__grid {
  display: grid;
  grid-template-columns: 52% 1fr;
  gap: var(--space-3xl);
  align-items: flex-start;
}

/* LEFT: Gallery Column */
.detail-hero__gallery {
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
}

/* Main Image */
.detail-gallery-main {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
  margin-bottom: var(--space-md);
}
.detail-gallery-main__img {
  width: 100%;
  height: auto;
  display: block;
  cursor: zoom-in;
  transition: opacity var(--transition-base);
}

/* Thumbnail strip */
.detail-thumbs-strip {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0;
  scrollbar-width: thin;
}
.detail-thumbs-strip::-webkit-scrollbar {
  height: 4px;
}
.detail-thumbs-strip::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 2px;
}
.detail-thumb {
  width: 64px;
  height: 48px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: border-color var(--transition-fast), opacity var(--transition-fast);
}
.detail-thumb:hover {
  border-color: var(--color-border);
}
.detail-thumb.active {
  border-color: var(--color-accent);
}
.detail-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* RIGHT: Info Column */
.detail-hero__info {
  padding-top: 0;
}
.detail-hero__info .card__category {
  display: inline-block;
  margin-bottom: var(--space-sm);
}
.detail-hero__info h1 {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}
.detail-hero__info .tagline {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

/* SKU section inside right column */
.detail-hero__info #sku-section {
  padding: 0;
  margin-bottom: var(--space-lg);
}
.detail-hero__info #sku-section h4 {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

/* Quote CTA */
.detail-hero__cta {
  width: 100%;
  margin-bottom: var(--space-xl);
  padding: 16px 32px;
}

/* Quick Highlights */
.detail-highlights {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}
.detail-highlights h4 {
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
  color: var(--color-primary);
}
.detail-highlights ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.detail-highlights li {
  padding: var(--space-xs) 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  border-bottom: 1px solid var(--color-border-light);
}
.detail-highlights li:last-child {
  border-bottom: none;
}
.detail-highlights li strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ── Video Section (contained) ── */
.detail-video {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}
.detail-video video {
  width: 100%;
  border-radius: var(--radius-md);
  display: block;
}

/* ── Detail Images (contained, zero-gap vertical stack) ── */
#details-section {
  padding: var(--space-2xl) 0;
  background: #fff;
}
#detail-gallery { line-height: 0; }
.detail-img {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 0;
}

/* Specs section */
.detail-specs {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}
.detail-specs h3 {
  margin: 0 0 var(--space-lg);
  font-size: 1.25rem;
}

/* Packing section */
.detail-packing {
  padding: var(--space-2xl) 0;
  background: #fff;
}
.detail-packing h4 { margin: 0 0 var(--space-sm); font-size: 1.05rem; }
.detail-packing p { color: var(--color-text-secondary); font-size: 0.925rem; line-height: 1.8; margin: 0; }

/* Certs section */
.detail-certs {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}
.detail-certs h3 { margin: 0 0 var(--space-md); }

/* Why section */
.detail-why {
  padding: var(--space-2xl) 0;
  background: var(--color-accent-light);
}
.detail-why .container {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--space-lg);
}
.detail-why h3 { margin: 0 0 var(--space-sm); }
.detail-why p { color: var(--color-text-secondary); line-height: 1.8; margin: 0; }

/* CTA section */
.detail-cta {
  padding: var(--space-3xl) 0;
  background: var(--color-primary);
  color: #fff;
  text-align: center;
}
.detail-cta h2 { color: #fff; margin: 0 0 var(--space-sm); }
.detail-cta p { color: rgba(255,255,255,0.75); margin: 0 0 var(--space-lg); max-width: 640px; margin-left: auto; margin-right: auto; }

/* ── SKU Switcher ── */
.sku-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.sku-btn {
  padding: 10px 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  background: #fff;
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}
.sku-btn.active,
.sku-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.sku-btn.active {
  background: var(--color-accent-light);
}

/* Product Info */
.product-info h1 {
  margin-bottom: var(--space-xs);
}
.product-info .tagline {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
}

/* Specs Table */
.specs-table {
  width: 100%;
  border-collapse: collapse;
}
.specs-table tr {
  border-bottom: 1px solid var(--color-border-light);
}
.specs-table td {
  padding: var(--space-md) 0;
  font-size: 0.925rem;
}
.specs-table td:first-child {
  font-weight: 600;
  color: var(--color-primary);
  width: 40%;
  vertical-align: top;
}
.specs-table td:last-child {
  color: var(--color-text-secondary);
}

/* Certs */
.certs {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}
.cert-badge {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-primary);
  border: 1px solid var(--color-border-light);
}

/* ── About Page Components ── */
.about-intro {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto var(--space-2xl);
  text-align: center;
}
.founder-card {
  display: flex;
  gap: var(--space-2xl);
  align-items: center;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  border: 1px solid var(--color-border-light);
}
.founder-card__avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 800;
  flex-shrink: 0;
}
.founder-card h3 {
  margin-bottom: var(--space-xs);
}
.founder-card .role {
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

/* ── Contact Page Layout ── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}
.contact-info-card {
  padding: var(--space-2xl);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}
.contact-info-card h3 {
  margin-bottom: var(--space-lg);
}
.contact-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.contact-item__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.contact-item h4 {
  font-size: 0.95rem;
  margin-bottom: 2px;
}
.contact-item p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}
.timezone-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: #E8F8EF;
  color: #1B7A3D;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.85rem;
  margin-top: var(--space-sm);
}

/* ── FAQ Accordion ── */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--color-border-light);
}
.faq-question {
  width: 100%;
  padding: var(--space-lg) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: left;
  gap: var(--space-md);
}
.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}
.faq-item.open .faq-question::after {
  content: '\2212';
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding-bottom: var(--space-lg);
}

/* ── Site Footer ── */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.7);
  padding: var(--space-3xl) 0 var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}
.footer-brand p {
  margin-top: var(--space-md);
  font-size: 0.9rem;
  line-height: 1.7;
}
.footer-col h4 {
  color: #fff;
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  padding: 4px 0;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}
.footer-col a:hover {
  color: #fff;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* ── Scroll Reveal Animation ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ── Breadcrumbs (Schema-ready) ── */
.breadcrumbs {
  padding: calc(var(--header-height) + var(--space-md)) 0 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.breadcrumbs a {
  color: var(--color-text-secondary);
}
.breadcrumbs a:hover {
  color: var(--color-accent);
}
.breadcrumbs span {
  margin: 0 var(--space-xs);
}

/* ── Utility Classes ── */
.text-center { text-align: center; }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.hidden { display: none !important; }

/* ══════════════════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   ══════════════════════════════════════════════════════════════════════ */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
  .card-grid       { grid-template-columns: repeat(2, 1fr); }
  .card-grid--4    { grid-template-columns: repeat(2, 1fr); }
  .value-cards     { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
  .cat-cards       { grid-template-columns: repeat(2, 1fr); }
  .contact-layout  { grid-template-columns: 1fr; }
  .footer-grid     { grid-template-columns: 1fr 1fr; }
  .steps           { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }

  /* Detail page tablet — tighter gap, keep two columns */
  .detail-hero__grid {
    gap: var(--space-xl);
    grid-template-columns: 52% 1fr;
  }
  .detail-hero__info h1 {
    font-size: 1.4rem;
  }
}

/* Mobile (< 768px) */
@media (max-width: 767px) {
  :root {
    --header-height: 64px;
    --space-3xl: 48px;
    --space-4xl: 64px;
  }

  /* Mobile nav */
  .nav-links {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    z-index: 999;
    gap: var(--space-md);
  }
  .nav-links.open {
    transform: translateX(0);
  }
  .nav-links a {
    font-size: 1.15rem;
    padding: var(--space-md) var(--space-xl);
  }
  .nav-cta {
    margin-left: 0;
    margin-top: var(--space-md);
  }
  .nav-toggle {
    display: flex;
  }

  /* Grids collapse to single column */
  .card-grid       { grid-template-columns: 1fr; }
  .card-grid--4    { grid-template-columns: 1fr; }
  .card-grid--2    { grid-template-columns: 1fr; }
  .cat-cards       { grid-template-columns: 1fr; }
  .cat-cards > *:nth-child(n+4) { display: none; }
  .value-cards     { grid-template-columns: 1fr; }
  .steps           { grid-template-columns: 1fr; }
  .footer-grid     { grid-template-columns: 1fr; }
  .trust-bar       { flex-direction: column; gap: var(--space-md); text-align: center; }

  .hero {
    padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-2xl);
  }
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }
  .hero__actions .btn {
    width: 100%;
    max-width: 300px;
  }

  .founder-card {
    flex-direction: column;
    text-align: center;
  }
  .filter-bar {
    gap: var(--space-xs);
  }
  .filter-tag {
    padding: 8px 16px;
    font-size: 0.825rem;
  }

  .page-header {
    padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-2xl);
  }

  /* Detail page mobile — stack single column */
  .detail-hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .detail-hero__gallery {
    position: static;
  }
  .detail-hero {
    padding: var(--space-lg) 0 var(--space-xl);
  }
  .detail-hero__info h1 {
    font-size: 1.5rem;
  }
  .detail-thumbs-strip { padding: 0; }
  .detail-thumb {
    width: 52px;
    height: 40px;
  }
  .detail-video {
    padding: var(--space-lg) 0;
  }
  #details-section {
    padding: var(--space-lg) 0;
  }
  .detail-specs,
  .detail-packing,
  .detail-certs,
  .detail-why,
  .detail-cta {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
  .detail-specs { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
  .detail-packing { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
  .detail-certs { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
  .detail-why { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
  .detail-cta { padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }
  .detail-why .container {
    border-left: none;
    padding-left: 0;
    border-top: 4px solid var(--color-accent);
    padding-top: var(--space-md);
  }
}

/* =============================================
   WhatsApp Floating Button
   ============================================= */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 10px;
}

.whatsapp-float__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
}

.whatsapp-float__btn:hover,
.whatsapp-float__btn:focus {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.55);
}

.whatsapp-float__btn svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}

/* Pulse animation to draw attention */
.whatsapp-float__btn::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 3px solid #25D366;
  opacity: 0;
  animation: wa-pulse 2s ease-out infinite;
  pointer-events: none;
}

@keyframes wa-pulse {
  0%   { transform: scale(1);   opacity: 0.6; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* Tooltip label (desktop) */
.whatsapp-float__label {
  display: none;
  background: #fff;
  color: var(--color-text);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 2px 12px rgba(0,0,0,0.12);
  white-space: nowrap;
  pointer-events: none;
}

@media (min-width: 769px) {
  .whatsapp-float__label {
    display: block;
  }
}

@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 20px;
    right: 16px;
  }
  .whatsapp-float__btn {
    width: 54px;
    height: 54px;
  }
  .whatsapp-float__btn svg {
    width: 28px;
    height: 28px;
  }
}