/* ============================================
   AERO FLOW — Premium CSS
   Precision Machined. Perfectly Balanced.
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* --- CSS Variables --- */
:root {
  --color-bg:          #0f0f0f;
  --color-bg-2:        #1a1a1a;
  --color-bg-3:        #242424;
  --color-surface:     #1e1e1e;
  --color-border:      #2a2a2a;
  --color-silver:      #c0c0c0;
  --color-silver-light:#e8e8e8;
  --color-silver-dim:  #888888;
  --color-accent:      #a8a8a8;
  --color-white:       #f5f5f5;
  --color-text:        #d0d0d0;
  --color-text-dim:    #888888;
  --color-glow:        rgba(192, 192, 192, 0.15);
  --color-glow-strong: rgba(232, 232, 232, 0.25);
  --color-danger:      #c0392b;

  --font-primary:  'Space Grotesk', sans-serif;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --shadow-card:  0 4px 24px rgba(0,0,0,0.6);
  --shadow-glow:  0 0 32px rgba(192,192,192,0.12), 0 4px 24px rgba(0,0,0,0.6);
  --shadow-glow-hover: 0 0 48px rgba(232,232,232,0.22), 0 8px 40px rgba(0,0,0,0.7);

  --transition-fast:   0.18s ease;
  --transition-base:   0.3s ease;
  --transition-slow:   0.5s ease;

  --nav-height: 72px;
  --max-width:  1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img { max-width: 100%; display: block; }

ul { list-style: none; }

button {
  font-family: var(--font-primary);
  cursor: pointer;
  border: none;
  outline: none;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-silver-dim);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-dim);
  max-width: 560px;
  line-height: 1.7;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-silver-light) 0%, var(--color-silver) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-base), border-color var(--transition-base), backdrop-filter var(--transition-base);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(15, 15, 15, 0.92);
  border-bottom-color: var(--color-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-mark {
  width: 36px;
  height: 36px;
}

.nav-logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-white);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-silver-dim);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-silver);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
  transform-origin: center;
}

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

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.cart-btn {
  position: relative;
  background: none;
  color: var(--color-silver);
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 500;
}

.cart-btn:hover {
  color: var(--color-white);
  background: var(--color-bg-3);
}

.cart-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  background: var(--color-silver);
  color: var(--color-bg);
  font-size: 0.65rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: transform var(--transition-fast);
}

.cart-badge.hidden { display: none; }

.cart-badge.bump {
  animation: badge-bump 0.3s ease;
}

@keyframes badge-bump {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.4); }
  100% { transform: scale(1); }
}

.nav-cta {
  background: var(--color-silver);
  color: var(--color-bg);
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-cta:hover {
  background: var(--color-white);
  transform: translateY(-1px);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 6px;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-silver);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* Mobile Nav */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(15,15,15,0.97);
  border-bottom: 1px solid var(--color-border);
  padding: 24px;
  z-index: 999;
  backdrop-filter: blur(16px);
  flex-direction: column;
  gap: 16px;
}

.nav-mobile.open { display: flex; }

.nav-mobile a {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-silver);
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.nav-mobile a:hover { color: var(--color-white); }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  font-family: var(--font-primary);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-silver-light), var(--color-silver));
  color: var(--color-bg);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #ffffff, var(--color-silver-light));
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(232,232,232,0.2);
}

.btn-secondary {
  background: transparent;
  color: var(--color-silver);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-silver);
  color: var(--color-white);
  background: rgba(192,192,192,0.06);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.85rem;
}

.btn-full { width: 100%; justify-content: center; }

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(192,192,192,0.04) 0%, transparent 70%), var(--color-bg);
}

.hero-bg-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(192,192,192,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(192,192,192,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--nav-height) + 48px) 24px 96px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-silver-dim);
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  border-radius: 100px;
}

.hero-label-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-silver);
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--color-white);
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-dim);
  line-height: 1.75;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.hero-stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-top: 4px;
  letter-spacing: 0.05em;
}

/* Hero Visual — Spinning Top */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-top-container {
  position: relative;
  width: 360px;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-top-glow {
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle, rgba(192,192,192,0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.1); }
}

.hero-top-rings {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(192,192,192,0.08);
  animation: ring-rotate linear infinite;
}

.hero-ring:nth-child(1) { width: 280px; height: 280px; animation-duration: 12s; }
.hero-ring:nth-child(2) { width: 220px; height: 220px; animation-duration: 8s; animation-direction: reverse; }
.hero-ring:nth-child(3) { width: 340px; height: 340px; animation-duration: 20s; border-style: dashed; }

@keyframes ring-rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.spinning-top-svg {
  animation: top-spin linear infinite;
  transform-origin: center;
  filter: drop-shadow(0 0 20px rgba(192,192,192,0.25));
}

@keyframes top-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.top-wobble {
  animation: wobble 4s ease-in-out infinite;
}

@keyframes wobble {
  0%   { transform: translateY(0px) rotate(0deg); }
  25%  { transform: translateY(-6px) rotate(1deg); }
  50%  { transform: translateY(0px) rotate(0deg); }
  75%  { transform: translateY(-3px) rotate(-0.5deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

/* ============================================
   BENEFITS SECTION
   ============================================ */
.benefits {
  padding: 100px 0;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.benefits-header {
  text-align: center;
  margin-bottom: 60px;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.benefit-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.benefit-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(192,192,192,0.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.benefit-card:hover {
  border-color: rgba(192,192,192,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.benefit-card:hover::before { opacity: 1; }

.benefit-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 24px;
  color: var(--color-silver);
}

.benefit-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.benefit-text {
  font-size: 0.95rem;
  color: var(--color-text-dim);
  line-height: 1.7;
}

/* ============================================
   PRODUCT SHOWCASE (Homepage)
   ============================================ */
.showcase {
  padding: 100px 0;
}

.showcase-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 60px;
  gap: 24px;
}

.product-grid-home {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

/* ============================================
   PRODUCT CARDS
   ============================================ */
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: rgba(192,192,192,0.28);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow-hover);
}

.product-card-visual {
  background: var(--color-bg-2);
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(192,192,192,0.06) 0%, transparent 70%);
}

.product-top-svg {
  transition: transform var(--transition-slow);
  filter: drop-shadow(0 4px 16px rgba(0,0,0,0.6));
}

.product-card:hover .product-top-svg {
  transform: scale(1.08) rotate(12deg);
  filter: drop-shadow(0 8px 32px rgba(192,192,192,0.2));
}

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--color-silver);
  color: var(--color-bg);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  z-index: 1;
}

.product-badge.new    { background: var(--color-silver-light); }
.product-badge.best   { background: linear-gradient(90deg, #c0c0c0, #e8e8e8); }

.product-card-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 6px;
}

.product-card-meta {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.product-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  line-height: 1.65;
  margin-bottom: 20px;
  flex: 1;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.product-price {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-white);
}

.product-price span {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  font-weight: 400;
}

.add-to-cart-btn {
  background: linear-gradient(135deg, var(--color-silver-light), var(--color-silver));
  color: var(--color-bg);
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
}

.add-to-cart-btn:hover {
  background: linear-gradient(135deg, #ffffff, var(--color-silver-light));
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(192,192,192,0.2);
}

.add-to-cart-btn:active {
  transform: translateY(0);
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials {
  padding: 100px 0;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.testimonials-header {
  text-align: center;
  margin-bottom: 60px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  border-color: rgba(192,192,192,0.2);
  transform: translateY(-3px);
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  color: var(--color-silver);
}

.testimonial-text {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-silver);
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-white);
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  padding: 100px 0;
  text-align: center;
}

.cta-inner {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 80px 48px;
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(192,192,192,0.06) 0%, transparent 60%);
}

.cta-inner > * { position: relative; z-index: 1; }

.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-dim);
  margin-bottom: 40px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social-link {
  width: 36px;
  height: 36px;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-silver-dim);
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  border-color: var(--color-silver);
  color: var(--color-white);
  background: var(--color-bg-2);
}

.footer-col-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 20px;
}

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

.footer-link {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  transition: color var(--transition-fast);
}

.footer-link:hover { color: var(--color-silver-light); }

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  transition: color var(--transition-fast);
}

.footer-legal a:hover { color: var(--color-silver); }

/* ============================================
   SHOP PAGE
   ============================================ */
.shop-hero {
  padding: calc(var(--nav-height) + 60px) 0 60px;
  text-align: center;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(192,192,192,0.05) 0%, transparent 60%);
}

.shop-hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.shop-hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-dim);
  max-width: 480px;
  margin: 0 auto;
}

.shop-main {
  padding: 60px 0 100px;
}

.shop-filters {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 16px;
  flex-wrap: wrap;
}

.shop-count {
  font-size: 0.9rem;
  color: var(--color-text-dim);
}

.filter-tabs {
  display: flex;
  gap: 8px;
}

.filter-tab {
  padding: 8px 16px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  color: var(--color-text-dim);
  font-size: 0.85rem;
  font-family: var(--font-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover,
.filter-tab.active {
  border-color: var(--color-silver);
  color: var(--color-white);
  background: rgba(192,192,192,0.06);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

/* ============================================
   CART SIDEBAR
   ============================================ */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 1100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  backdrop-filter: blur(4px);
}

.cart-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.cart-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(440px, 100vw);
  background: var(--color-bg-2);
  border-left: 1px solid var(--color-border);
  z-index: 1101;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  display: flex;
  flex-direction: column;
}

.cart-sidebar.open {
  transform: translateX(0);
}

.cart-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  border-bottom: 1px solid var(--color-border);
}

.cart-sidebar-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
}

.cart-close-btn {
  background: none;
  color: var(--color-silver-dim);
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
}

.cart-close-btn:hover {
  color: var(--color-white);
  background: var(--color-bg-3);
}

.cart-sidebar-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px;
}

.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 16px;
  text-align: center;
  padding: 48px 0;
}

.cart-empty-icon { color: var(--color-border); margin-bottom: 8px; }

.cart-empty-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-white);
}

.cart-empty-text {
  font-size: 0.9rem;
  color: var(--color-text-dim);
}

.cart-items-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.cart-item {
  display: flex;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item-visual {
  width: 72px;
  height: 72px;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.cart-item-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 4px;
}

.cart-item-meta {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-bottom: 10px;
}

.cart-item-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.qty-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
}

.qty-btn {
  background: none;
  color: var(--color-silver);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  font-size: 1rem;
  line-height: 1;
  transition: color var(--transition-fast);
}

.qty-btn:hover { color: var(--color-white); }

.qty-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-white);
  min-width: 20px;
  text-align: center;
}

.cart-item-remove {
  background: none;
  color: var(--color-text-dim);
  font-size: 0.8rem;
  transition: color var(--transition-fast);
}

.cart-item-remove:hover { color: #e05555; }

.cart-item-price {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-white);
  white-space: nowrap;
}

.cart-sidebar-footer {
  padding: 24px 28px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.cart-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.cart-total-label {
  font-size: 0.9rem;
  color: var(--color-text-dim);
}

.cart-total-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
}

.cart-checkout-note {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  text-align: center;
  margin-top: 12px;
  line-height: 1.5;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-hero {
  padding: calc(var(--nav-height) + 80px) 0 80px;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(192,192,192,0.05) 0%, transparent 60%);
}

.about-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-section {
  padding: 80px 0;
  border-top: 1px solid var(--color-border);
}

.about-section-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-section-inner.reverse {
  direction: rtl;
}

.about-section-inner.reverse > * {
  direction: ltr;
}

.about-visual {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(192,192,192,0.06) 0%, transparent 60%);
}

.about-content { }

.about-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 20px;
  line-height: 1.2;
}

.about-text {
  font-size: 1rem;
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.about-list-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-text);
}

.about-list-icon {
  color: var(--color-silver);
  flex-shrink: 0;
  margin-top: 3px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.value-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: all var(--transition-base);
}

.value-card:hover {
  border-color: rgba(192,192,192,0.25);
  transform: translateY(-2px);
}

.value-icon {
  color: var(--color-silver);
  margin-bottom: 14px;
}

.value-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.value-text {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.65;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-hero {
  padding: calc(var(--nav-height) + 60px) 0 60px;
  text-align: center;
}

.contact-main {
  padding: 0 0 100px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}

.contact-info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}

.contact-info-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.contact-info-sub {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  margin-bottom: 32px;
  line-height: 1.6;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
}

.contact-detail-icon {
  color: var(--color-silver);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-detail-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 4px;
}

.contact-detail-value {
  font-size: 0.95rem;
  color: var(--color-white);
}

.contact-form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-silver);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--color-white);
  font-size: 0.95rem;
  font-family: var(--font-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--color-text-dim); }

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-silver);
  box-shadow: 0 0 0 3px rgba(192,192,192,0.1);
}

.form-select {
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.form-select option { background: var(--color-bg-2); }

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-submit-note {
  font-size: 0.82rem;
  color: var(--color-text-dim);
  margin-top: 12px;
  text-align: center;
}

/* Success message */
.form-success {
  display: none;
  text-align: center;
  padding: 48px 24px;
}

.form-success.show { display: block; }

.form-success-icon {
  color: var(--color-silver);
  margin: 0 auto 20px;
}

.form-success-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 10px;
}

.form-success-text {
  font-size: 0.95rem;
  color: var(--color-text-dim);
}

/* FAQ */
.faq-section {
  padding: 80px 0 100px;
  border-top: 1px solid var(--color-border);
}

.faq-header {
  text-align: center;
  margin-bottom: 48px;
}

.faq-grid {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  text-align: left;
  padding: 20px 24px;
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.faq-question:hover { background: rgba(192,192,192,0.04); }

.faq-arrow {
  color: var(--color-silver-dim);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-arrow { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.open .faq-answer { max-height: 400px; }

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--color-text-dim);
  line-height: 1.75;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
}

/* ============================================
   PAGE HERO (shared)
   ============================================ */
.page-hero {
  padding: calc(var(--nav-height) + 80px) 0 64px;
  text-align: center;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(192,192,192,0.05) 0%, transparent 60%);
}

.page-hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.page-hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-dim);
  max-width: 520px;
  margin: 0 auto;
}

/* ============================================
   TOAST NOTIFICATION
   ============================================ */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--color-surface);
  border: 1px solid var(--color-silver);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--color-white);
  font-weight: 500;
  pointer-events: all;
  animation: toast-in 0.3s ease;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.toast.hide {
  animation: toast-out 0.3s ease forwards;
}

@keyframes toast-in {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

@keyframes toast-out {
  from { transform: translateY(0); opacity: 1; }
  to   { transform: translateY(20px); opacity: 0; }
}

.toast-icon { color: var(--color-silver); flex-shrink: 0; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }

  .nav-links,
  .nav-cta { display: none; }

  .nav-hamburger { display: flex; }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

  .hero-subtitle { margin-left: auto; margin-right: auto; }

  .hero-actions { justify-content: center; }

  .hero-stats { justify-content: center; }

  .hero-top-container {
    width: 260px;
    height: 260px;
  }

  .hero-ring:nth-child(1) { width: 200px; height: 200px; }
  .hero-ring:nth-child(2) { width: 150px; height: 150px; }
  .hero-ring:nth-child(3) { width: 250px; height: 250px; }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .product-grid-home,
  .products-grid {
    grid-template-columns: 1fr;
  }

  .showcase-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .about-hero-inner,
  .about-section-inner,
  .about-section-inner.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-info-card {
    position: static;
  }

  .form-row { grid-template-columns: 1fr; }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .cta-inner { padding: 48px 24px; }

  .about-visual { height: 240px; }
}

@media (max-width: 480px) {
  .btn { padding: 12px 20px; font-size: 0.9rem; }
  .hero-title { font-size: 2.4rem; }
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--color-silver-dim); }

/* ============================================
   SELECTION
   ============================================ */
::selection {
  background: rgba(192,192,192,0.25);
  color: var(--color-white);
}