/* ============================================================
   KDN STONES PRIVATE LIMITED — Main Stylesheet
   Premium & Subtle Design | Silver-Charcoal Palette
   ============================================================ */

:root {
  --charcoal:    #2E2E2E;
  --charcoal-2:  #3D3D3D;
  --charcoal-3:  #1A1A1A;
  --silver:      #8C8C8C;
  --silver-l:    #B8B8B8;
  --silver-ll:   #D8D8D8;
  --silver-d:    #6A6A6A;
  --white:       #FFFFFF;
  --offwhite:    #F9F9F9;
  --lightgrey:   #F2F2F2;
  --border:      #E0E0E0;
  --text:        #1A1A1A;
  --muted:       #6A6A6A;
  --accent:      #8C8C8C;
  --gold-hint:   #C8B89A;
  --font-head:   'Playfair Display', Georgia, serif;
  --font-body:   'Inter', -apple-system, sans-serif;
  --font-label:  'Rajdhani', sans-serif;
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --shadow-sm:   0 2px 12px rgba(0,0,0,0.06);
  --shadow-md:   0 8px 32px rgba(0,0,0,0.10);
  --shadow-lg:   0 24px 64px rgba(0,0,0,0.14);
  --radius:      4px;
  --radius-lg:   12px;
}

/* ─── RESET ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

/* ─── TYPOGRAPHY ─────────────────────────────────────── */
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; }
.label-text {
  font-family: var(--font-label);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--charcoal);
  font-weight: 700;
}
.section-title span { color: var(--silver); font-style: italic; }
.section-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.8;
}

/* ─── LAYOUT ─────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 76px 0; }
.section-header { margin-bottom: 48px; }
.section-header .label-text { margin-bottom: 10px; }
.section-header .section-title { margin-bottom: 14px; }

/* ─── BUTTONS ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.9rem;
  font-family: var(--font-label);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all 0.35s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}
.btn:hover::before { transform: scaleX(1); }
.btn-dark {
  background: var(--charcoal);
  color: var(--white);
  border: 2px solid var(--charcoal);
}
.btn-dark:hover {
  background: var(--charcoal-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(46,46,46,0.3);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.7);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}
.btn-outline-dark {
  background: transparent;
  color: var(--charcoal);
  border: 2px solid var(--charcoal);
}
.btn-outline-dark:hover {
  background: var(--charcoal);
  color: var(--white);
}

/* ─── NAVBAR ─────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.4s var(--ease-out);
}
#navbar.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  padding: 12px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo img { height: 40px; width: auto; transition: opacity 0.3s; }
/* Logo is white on the dark hero before scroll; reverts to natural color on white navbar */
#navbar:not(.scrolled) .nav-logo img { filter: brightness(0) invert(1); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-family: var(--font-label);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--white);
  transition: color 0.3s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--silver-l);
  transition: width 0.3s var(--ease-out);
}
.nav-links a:hover::after { width: 100%; }
#navbar.scrolled .nav-links a { color: var(--charcoal); }
#navbar.scrolled .nav-links a::after { background: var(--charcoal); }
.nav-cta { margin-left: 20px; }
#navbar.scrolled .nav-cta.btn-outline {
  color: var(--charcoal);
  border-color: var(--charcoal);
}
#navbar.scrolled .nav-cta.btn-outline:hover {
  background: var(--charcoal);
  color: var(--white);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  transition: all 0.3s;
}
#navbar.scrolled .hamburger span { background: var(--charcoal); }
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--charcoal);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--font-head);
  font-size: 2rem;
  color: var(--white);
  transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--silver-ll); }
.mobile-close {
  position: absolute;
  top: 24px; right: 24px;
  color: var(--white);
  font-size: 1.5rem;
  padding: 8px;
}

/* ─── HERO ───────────────────────────────────────────── */
#hero {
  height: 100vh;
  min-height: 700px;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('https://kdnstones.com/wp-content/uploads/2025/11/DSC05577-scaled.jpg');
  background-size: cover;
  background-position: center;
  will-change: transform;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(20,20,20,0.72) 0%,
    rgba(46,46,46,0.55) 60%,
    rgba(20,20,20,0.4) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.hero-label::before {
  content: '';
  display: block;
  width: 40px; height: 1px;
  background: var(--silver-l);
}
.hero-label span {
  font-family: var(--font-label);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--silver-l);
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  color: var(--white);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}
.hero-title em {
  font-style: italic;
  color: var(--silver-ll);
  background: linear-gradient(135deg, #D8D8D8 0%, #A0A0A0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-tagline {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 40px;
  letter-spacing: 0.05em;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  position: absolute;
  bottom: 48px;
  right: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius);
  overflow: hidden;
  backdrop-filter: blur(10px);
}
.hero-stat {
  padding: 20px 28px;
  background: rgba(0,0,0,0.3);
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.1);
}
.hero-stat:last-child { border-right: none; }
.hero-stat-num {
  font-family: var(--font-head);
  font-size: 1.8rem;
  color: var(--white);
  font-weight: 700;
  line-height: 1;
}
.hero-stat-label {
  font-family: var(--font-label);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--silver-l);
  text-transform: uppercase;
  margin-top: 4px;
}
.hero-scroll {
  position: absolute;
  bottom: 48px;
  left: 2rem;
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,0.6);
  font-family: var(--font-label);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.scroll-line {
  width: 40px; height: 1px;
  background: rgba(255,255,255,0.4);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: var(--white);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  to { left: 100%; }
}

/* ─── PRODUCT STRIP ──────────────────────────────────── */
#strip {
  background: var(--charcoal);
  padding: 18px 0;
  overflow: hidden;
}
.strip-track {
  display: flex;
  gap: 0;
  white-space: nowrap;
  animation: stripScroll 20s linear infinite;
}
.strip-item {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  padding: 0 28px;
  font-family: var(--font-label);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--silver-l);
  text-transform: uppercase;
  flex-shrink: 0;
}
.strip-item::after {
  content: '·';
  color: var(--silver);
}
@keyframes stripScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ─── ABOUT ──────────────────────────────────────────── */
#about { background: var(--white); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-img-wrap {
  position: relative;
}
.about-img-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img-frame img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}
.about-img-frame:hover img { transform: scale(1.03); }
.about-img-border {
  position: absolute;
  inset: -12px;
  border: 1px solid var(--silver-ll);
  border-radius: calc(var(--radius-lg) + 8px);
  pointer-events: none;
}
.about-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--charcoal);
  color: var(--white);
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
}
.about-badge .badge-num {
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--silver-ll);
}
.about-badge .badge-label {
  font-family: var(--font-label);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver);
  margin-top: 4px;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 36px;
}
.about-feature {
  padding: 20px;
  background: var(--lightgrey);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--silver-l);
  transition: all 0.3s var(--ease-out);
}
.about-feature:hover {
  background: var(--charcoal);
  border-left-color: var(--silver);
  transform: translateY(-3px);
}
.about-feature:hover .af-title { color: var(--white); }
.about-feature:hover .af-desc { color: var(--silver-l); }
.af-icon { font-size: 1.4rem; margin-bottom: 8px; }
.af-title {
  font-family: var(--font-label);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--charcoal);
  margin-bottom: 4px;
  transition: color 0.3s;
}
.af-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
  transition: color 0.3s;
}

/* ─── NUMBERS BAND ───────────────────────────────────── */
#numbers { background: var(--lightgrey); padding: 56px 0; }
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.number-item {
  background: var(--white);
  padding: 48px 32px;
  text-align: center;
  transition: background 0.3s;
}
.number-item:hover { background: var(--charcoal); }
.number-item:hover .num-value, .number-item:hover .num-suffix { color: var(--white); }
.number-item:hover .num-label { color: var(--silver-l); }
.num-value {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--charcoal);
  line-height: 1;
  display: inline-block;
  transition: color 0.3s;
}
.num-suffix {
  font-family: var(--font-head);
  font-size: 1.8rem;
  color: var(--silver);
  transition: color 0.3s;
}
.num-label {
  font-family: var(--font-label);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--silver);
  margin-top: 8px;
  transition: color 0.3s;
}

/* ─── PRODUCTS ───────────────────────────────────────── */
#products { background: var(--offwhite); }
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.4s;
}
.product-card:hover { box-shadow: var(--shadow-lg); }
.product-img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease-out);
}
.product-card:hover .product-img { transform: scale(1.08); }
.product-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(20,20,20,0.92) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
}
.product-hover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(46,46,46,0.88);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.4s var(--ease-out);
}
.product-card:hover .product-hover-overlay { opacity: 1; }
.product-name {
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--white);
  font-weight: 600;
}
.product-tag {
  font-family: var(--font-label);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--silver-l);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.product-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 24px;
}
.product-card .btn {
  padding: 10px 24px;
  font-size: 0.8rem;
}

/* ─── PROCESS ────────────────────────────────────────── */
#process { background: var(--white); }
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), var(--border), transparent);
}
.process-step {
  position: relative;
  text-align: center;
  padding: 0 16px;
}
.step-num {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-family: var(--font-head);
  font-size: 1.4rem;
  color: var(--charcoal);
  font-weight: 700;
  position: relative;
  z-index: 1;
  transition: all 0.4s var(--ease-out);
}
.process-step:hover .step-num {
  background: var(--charcoal);
  border-color: var(--charcoal);
  color: var(--white);
  transform: scale(1.1);
  box-shadow: 0 8px 24px rgba(46,46,46,0.25);
}
.step-title {
  font-family: var(--font-label);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--charcoal);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.step-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ─── WHY US ─────────────────────────────────────────── */
#why-us { background: var(--lightgrey); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--white);
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.why-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--charcoal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}
.why-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.why-card:hover::before { transform: scaleX(1); }
.why-icon {
  width: 52px; height: 52px;
  background: var(--lightgrey);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  transition: background 0.3s;
}
.why-card:hover .why-icon { background: var(--charcoal); color: var(--white); }
.why-title {
  font-family: var(--font-label);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--charcoal);
  margin-bottom: 10px;
}
.why-desc {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── GALLERY ────────────────────────────────────────── */
#gallery { background: var(--offwhite); padding-bottom: 0; }
.gallery-grid {
  columns: 3;
  gap: 14px;
  padding-bottom: 76px;
}
.gallery-item {
  break-inside: avoid;
  margin-bottom: 14px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.gallery-item img {
  width: 100%;
  display: block;
  transition: transform 0.6s var(--ease-out);
}
.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(46,46,46,0.4);
  opacity: 0;
  transition: opacity 0.3s;
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-item:hover::after { opacity: 1; }

/* ─── TESTIMONIALS ───────────────────────────────────── */
#testimonials {
  background: var(--charcoal);
  padding: 76px 0;
}
#testimonials .section-title { color: var(--white); }
#testimonials .label-text { color: var(--silver); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: all 0.4s var(--ease-out);
}
.testimonial-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-4px);
}
.quote-mark {
  font-family: var(--font-head);
  font-size: 4rem;
  color: var(--silver);
  line-height: 0.5;
  margin-bottom: 20px;
  opacity: 0.4;
}
.testimonial-text {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: italic;
}
.testimonial-stars { color: #C8B89A; font-size: 0.85rem; margin-bottom: 16px; }
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}
.author-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--silver-d);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--white);
  font-weight: 700;
  flex-shrink: 0;
}
.author-name {
  font-family: var(--font-label);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}
.author-company {
  font-size: 0.78rem;
  color: var(--silver);
  margin-top: 2px;
}

/* ─── CONTACT ────────────────────────────────────────── */
#contact { background: var(--white); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}
.contact-info { padding-top: 8px; }
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  align-items: flex-start;
}
.contact-icon {
  width: 44px; height: 44px;
  background: var(--lightgrey);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.contact-detail strong {
  display: block;
  font-family: var(--font-label);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 4px;
}
.contact-detail span {
  font-size: 0.95rem;
  color: var(--charcoal);
  line-height: 1.6;
}
.contact-form { background: var(--offwhite); padding: 40px; border-radius: var(--radius-lg); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver-d);
  margin-bottom: 8px;
  font-weight: 600;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text);
  transition: border-color 0.3s, box-shadow 0.3s;
  outline: none;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--charcoal);
  box-shadow: 0 0 0 3px rgba(46,46,46,0.08);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M6 8L0 0h12z' fill='%238C8C8C'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  cursor: pointer;
}
.form-success {
  display: none;
  background: #f0faf0;
  border: 1px solid #b3dbb3;
  border-radius: var(--radius);
  padding: 16px;
  color: #2e7d32;
  font-size: 0.9rem;
  margin-top: 16px;
  text-align: center;
}
.form-success.show { display: block; }

/* ─── FOOTER ─────────────────────────────────────────── */
#footer {
  background: var(--charcoal-3);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
  margin-bottom: 16px;
}
.footer-tagline {
  font-family: var(--font-head);
  font-style: italic;
  color: var(--silver);
  font-size: 0.95rem;
  margin-bottom: 20px;
}
.footer-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.8;
}
.footer-heading {
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 20px;
  font-weight: 700;
}
.footer-links a {
  display: block;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 10px;
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--white); }
.footer-newsletter input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  color: var(--white);
  font-size: 0.88rem;
  font-family: var(--font-body);
  outline: none;
  margin-bottom: 10px;
  transition: border-color 0.3s;
}
.footer-newsletter input::placeholder { color: rgba(255,255,255,0.3); }
.footer-newsletter input:focus { border-color: var(--silver); }
.footer-newsletter .btn { width: 100%; justify-content: center; }
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.social-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
  transition: all 0.3s;
  text-decoration: none;
}
.social-icon:hover {
  background: var(--silver-d);
  color: var(--white);
  transform: translateY(-3px);
}
.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}
.footer-legal {
  display: flex;
  gap: 24px;
}
.footer-legal a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
  transition: color 0.3s;
}
.footer-legal a:hover { color: rgba(255,255,255,0.6); }

/* ─── ANIMATIONS (initial states for GSAP) ───────────── */
.gsap-fade-up {
  opacity: 0;
  transform: translateY(40px);
}
.gsap-fade-left {
  opacity: 0;
  transform: translateX(-40px);
}
.gsap-fade-right {
  opacity: 0;
  transform: translateX(40px);
}
.gsap-scale-in {
  opacity: 0;
  transform: scale(0.9);
}

/* ─── LIGHTBOX ───────────────────────────────────────── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(0,0,0,0.92);
  align-items: center;
  justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius);
}
.lightbox-close {
  position: absolute;
  top: 24px; right: 24px;
  color: var(--white);
  font-size: 2rem;
  padding: 8px;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.lightbox-close:hover { opacity: 1; }

/* ─── RESPONSIVE ─────────────────────────────────────── */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .process-steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-img-wrap { max-width: 480px; margin: 0 auto; }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .gallery-grid { columns: 2; }
  .hero-stats { position: static; margin-top: 40px; }
  .hero-scroll { display: none; }
  .process-steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .gallery-grid { columns: 1; }
  .numbers-grid { grid-template-columns: 1fr 1fr; }
  .about-features { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
}

/* ─── PRELOADER ──────────────────────────────────────── */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--charcoal);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 24px;
}
.preloader-logo { height: 64px; filter: brightness(0) invert(1); opacity: 0.9; }
.preloader-bar {
  width: 200px; height: 2px;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  overflow: hidden;
}
.preloader-fill {
  height: 100%;
  background: var(--silver-ll);
  animation: preloaderFill 1.6s var(--ease-out) forwards;
}
@keyframes preloaderFill {
  from { width: 0; }
  to { width: 100%; }
}

/* ─── BACK TO TOP ─────────────────────────────────────── */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px; height: 44px;
  background: var(--charcoal);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 500;
  box-shadow: var(--shadow-md);
}
#back-to-top.visible { opacity: 1; visibility: visible; }
#back-to-top:hover { background: var(--charcoal-2); transform: translateY(-4px); }

/* ─── FORM STATES ─────────────────────────────────────── */
.form-error {
  border-color: #e53e3e !important;
  box-shadow: 0 0 0 3px rgba(229,62,62,0.1) !important;
}
.submit-loader {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }