/* ============================================================
   PT AMITA DHANA – Corporate Website Stylesheet
   Author: Antigravity
   ============================================================ */

/* ============================================================
   1. CSS Custom Properties (Design Tokens)
   ============================================================ */
:root {
  /* Brand Colors */
  --color-primary:      #0B2D4D;
  --color-secondary:    #0066CC;
  --color-accent:       #0080FF;
  --color-accent-light: #47A3FF;

  /* Neutral & Background */
  --color-dark:         #081C2C;
  --color-bg:           #F5F7FA;
  --color-bg-alt:       #EEF2F7;
  --color-white:        #FFFFFF;
  --color-surface:      #FFFFFF;

  /* Text */
  --color-text-base:    #1A2B3C;
  --color-text-muted:   #5A7089;
  --color-text-light:   #8BA0B5;

  /* Border */
  --color-border:       #D4DDE8;
  --color-border-light: #E8EDF4;

  /* Steel / Industrial accents */
  --color-steel-100:    #EEF3F8;
  --color-steel-200:    #D4E0EC;
  --color-steel-300:    #A8BECE;
  --color-steel-400:    #7A96B2;

  /* Shadows */
  --shadow-xs:   0 1px 3px rgba(8, 28, 44, 0.06);
  --shadow-sm:   0 2px 8px rgba(8, 28, 44, 0.08);
  --shadow-md:   0 4px 20px rgba(8, 28, 44, 0.10);
  --shadow-lg:   0 8px 40px rgba(8, 28, 44, 0.14);
  --shadow-xl:   0 16px 60px rgba(8, 28, 44, 0.18);

  /* Spacing */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-5:   1.25rem;
  --space-6:   1.5rem;
  --space-8:   2rem;
  --space-10:  2.5rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  5rem;
  --space-24:  6rem;

  /* Typography */
  --font-body:    'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium:  500;
  --font-weight-semibold: 600;
  --font-weight-bold:    700;
  --font-weight-extrabold: 800;

  /* Radii */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Layout */
  --container-max: 1160px;
  --container-pad: clamp(1rem, 4vw, 2rem);

  /* Navbar */
  --navbar-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-base);
  background-color: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--color-primary);
}

/* ============================================================
   3. Layout Utilities
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.section--alt {
  background-color: var(--color-bg-alt);
  position: relative;
}

/* Subtle top border for alt sections */
.section--alt::before {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.section--alt::after {
  content: '';
  position: absolute;
  inset-block-end: 0;
  inset-inline: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

/* ============================================================
   4. Section Header / Typography
   ============================================================ */
.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-block-end: clamp(var(--space-10), 5vw, var(--space-16));
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  background-color: rgba(0, 128, 255, 0.08);
  border: 1px solid rgba(0, 128, 255, 0.25);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  margin-block-end: var(--space-4);
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
  margin-block-end: var(--space-4);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================================
   5. Button System
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.375rem;
  font-size: 0.9375rem;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

/* Primary */
.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: 0 4px 16px rgba(0, 128, 255, 0.35);
}

/* Secondary (outlined primary style) */
.btn--secondary {
  background-color: transparent;
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background-color: var(--color-secondary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

/* Outline (on dark/hero) */
.btn--outline {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.55);
}

.btn--outline:hover,
.btn--outline:focus-visible {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
}

/* White (on dark CTA section) */
.btn--white {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn--white:hover,
.btn--white:focus-visible {
  background-color: var(--color-bg);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

/* Size modifiers */
.btn--lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn--full {
  width: 100%;
}

/* Focus */
.btn:focus-visible {
  outline: 3px solid var(--color-accent-light);
  outline-offset: 2px;
}

/* ============================================================
   6. Navigation Bar
   ============================================================ */
.navbar {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 1000;
  height: var(--navbar-height);
  background-color: var(--color-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition:
    height var(--transition-base),
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.navbar.is-scrolled {
  height: 60px;
  background-color: rgba(8, 28, 44, 0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 255, 255, 0.08);
}

.navbar__inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  height: 100%;
}

/* Brand */
.navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-white);
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.navbar__brand:hover {
  opacity: 0.85;
}

.navbar__logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.navbar__brand:hover .navbar__logo-icon {
  transform: scale(1.08);
}

.navbar__logo-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.navbar__brand-text {
  font-size: 1.0625rem;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: 0.04em;
  color: var(--color-white);
}

/* Nav links */
.navbar__nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.navbar__link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: 0.9375rem;
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-sm);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.navbar__link:hover,
.navbar__link.is-active {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
}

.navbar__link.is-active {
  color: var(--color-accent-light);
}

/* CTA */
.navbar__cta {
  flex-shrink: 0;
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
  border-radius: var(--radius-md);
}

.navbar__cta:hover,
.navbar__cta:focus-visible {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: 0 4px 12px rgba(0, 128, 255, 0.35);
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  color: var(--color-white);
  transition: background-color var(--transition-fast);
  flex-shrink: 0;
  margin-inline-start: auto;
}

.navbar__hamburger:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
  transform-origin: center;
}

/* Hamburger open state */
.navbar__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(8, 28, 44, 0.6);
  z-index: 998;
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-overlay.is-visible {
  display: block;
  opacity: 1;
}

/* ============================================================
   7. Hero Section
   ============================================================ */
.hero {
  position: relative;
  background-color: var(--color-primary);
  padding-block-start: calc(var(--navbar-height) + clamp(var(--space-16), 8vw, var(--space-20)));
  padding-block-end: clamp(var(--space-20), 10vw, 8rem);
  overflow: hidden;
}

/* Subtle industrial grid pattern */
.hero__bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 128, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 128, 255, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

/* Diagonal metallic accent */
.hero::before {
  content: '';
  position: absolute;
  inset-block-end: -1px;
  inset-inline-start: -20%;
  width: 140%;
  height: 120px;
  background-color: var(--color-bg);
  clip-path: polygon(0 80%, 100% 0%, 100% 100%, 0 100%);
  pointer-events: none;
}

/* Subtle radial glow */
.hero::after {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline-end: 0;
  width: 55%;
  height: 100%;
  background: radial-gradient(ellipse at 80% 30%, rgba(0, 128, 255, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
}

/* Hero content */
.hero__content {
  color: var(--color-white);
}

.hero__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  background-color: rgba(71, 163, 255, 0.12);
  border: 1px solid rgba(71, 163, 255, 0.25);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  margin-block-end: var(--space-5);
}

.hero__heading {
  font-size: clamp(1.875rem, 5vw, 3rem);
  font-weight: var(--font-weight-extrabold);
  line-height: 1.15;
  color: var(--color-white);
  margin-block-end: var(--space-5);
  letter-spacing: -0.02em;
}

.hero__subtext {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.75;
  max-width: 520px;
  margin-block-end: var(--space-8);
}

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

/* Hero visual */
.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__image-placeholder {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(71, 163, 255, 0.2);
  background-color: rgba(11, 45, 77, 0.5);
  box-shadow: var(--shadow-xl);
  position: relative;
}

/* Metallic sheen overlay */
.hero__image-placeholder::before {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  right: 60%;
  bottom: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.03) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

.steel-visual {
  padding: var(--space-8) var(--space-6) var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  min-height: 280px;
  justify-content: center;
}

.steel-visual__coil {
  width: 100%;
  max-width: 360px;
}

.steel-visual__label {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

.steel-visual__tag {
  font-size: 0.8125rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-light);
  background-color: rgba(71, 163, 255, 0.12);
  border: 1px solid rgba(71, 163, 255, 0.25);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.hero__divider {
  display: none; /* Visual shape handled via ::before */
}

/* ============================================================
   8. About Section
   ============================================================ */
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
}

/* About visual card */
.about__visual-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 480px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.about__visual-card:hover .about__image {
  transform: scale(1.04);
}

/* About content */
.about__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about__lead {
  font-size: 1.125rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-base);
  line-height: 1.7;
}

.about__body {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.about__values {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-block-start: var(--space-4);
}

.about__value-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.about__value-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: rgba(0, 128, 255, 0.08);
  color: var(--color-accent);
  flex-shrink: 0;
  margin-block-start: var(--space-1);
}

.about__value-item > div {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.about__value-item strong {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

.about__value-item span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ============================================================
   9. Products Section
   ============================================================ */
.products__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

/* Product Card */
.product-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-steel-300);
}

.product-card__image-wrap {
  position: relative;
  background-color: var(--color-steel-100);
  border-bottom: 1px solid var(--color-border-light);
  overflow: hidden;
}

/* Subtle diagonal pattern overlay on product image area */
.product-card__image-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 14px,
    rgba(11, 45, 77, 0.02) 14px,
    rgba(11, 45, 77, 0.02) 15px
  );
  pointer-events: none;
  z-index: 1;
}

.product-card__image-placeholder {
  padding: var(--space-8) var(--space-6) var(--space-6);
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card__image-placeholder svg {
  width: 100%;
  max-width: 260px;
  height: auto;
}

/* Real image when provided */
.product-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.product-card__category-badge {
  position: absolute;
  inset-block-start: var(--space-3);
  inset-inline-start: var(--space-3);
  z-index: 2;
  font-size: 0.7rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  background-color: var(--color-accent);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}

.product-card__body {
  padding: var(--space-5) var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.product-card__title {
  font-size: 1.0625rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.product-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
}

.product-card__btn {
  margin-block-start: auto;
}

/* Products CTA link */
.products__cta {
  text-align: center;
  margin-block-start: var(--space-10);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ============================================================
   10. Why Choose Us
   ============================================================ */
.why-us__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.why-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  box-shadow: var(--shadow-xs);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* Subtle top accent line on hover */
.why-card::before {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 3px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.why-card:hover::before {
  transform: scaleX(1);
}

.why-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-steel-200);
}

.why-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background-color: rgba(0, 128, 255, 0.08);
  color: var(--color-accent);
  flex-shrink: 0;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.why-card:hover .why-card__icon {
  background-color: var(--color-secondary);
  color: var(--color-white);
}

.why-card__title {
  font-size: 1.0625rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.why-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ============================================================
   11. Industries Section
   ============================================================ */
.industries__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-5);
}

.industry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-4);
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  text-align: center;
  cursor: default;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    background-color var(--transition-base);
  box-shadow: var(--shadow-xs);
}

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

.industry-item__icon {
  color: var(--color-secondary);
  transition: color var(--transition-base);
}

.industry-item:hover .industry-item__icon {
  color: var(--color-white);
}

.industry-item__label {
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-base);
  transition: color var(--transition-base);
  line-height: 1.3;
}

.industry-item:hover .industry-item__label {
  color: var(--color-white);
}

/* ============================================================
   12. CTA Section
   ============================================================ */
.cta-section {
  position: relative;
  background-color: var(--color-primary);
  overflow: hidden;
}

.cta-section__bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 128, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 128, 255, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* Diagonal steel-inspired stripe */
.cta-section::before {
  content: '';
  position: absolute;
  inset-block-start: -1px;
  inset-inline-start: -10%;
  width: 120%;
  height: 80px;
  background-color: var(--color-bg-alt);
  clip-path: polygon(0 0, 100% 0, 100% 30%, 0 100%);
  pointer-events: none;
}

.cta-section::after {
  content: '';
  position: absolute;
  inset-block-end: -1px;
  inset-inline-start: -10%;
  width: 120%;
  height: 80px;
  background-color: var(--color-bg);
  clip-path: polygon(0 70%, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.cta-section__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}

.cta-section__title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-white);
  max-width: 680px;
}

.cta-section__subtitle {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.72);
  max-width: 520px;
  line-height: 1.7;
}

/* ============================================================
   13. Contact Section
   ============================================================ */
.contact {
  background-color: var(--color-bg);
}

.contact__inner {
  display: grid;
  grid-template-columns: minmax(390px, 470px) 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-12));
  align-items: start;
}

/* Contact info card */
.contact-info-card {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: clamp(2rem, 3.5vw, 2.75rem) clamp(1.75rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: calc(var(--navbar-height) + var(--space-6));
  border: 1px solid rgba(71, 163, 255, 0.2);
}

.contact-info-card__company {
  font-size: 1.375rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-white);
  letter-spacing: 0.04em;
  margin-block-end: var(--space-2);
}

.contact-info-card__tagline {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
  margin-block-end: var(--space-8);
  line-height: 1.55;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-info-item__icon {
  width: 42px;
  height: 42px;
  min-width: 42px;
  border-radius: var(--radius-md);
  background-color: rgba(71, 163, 255, 0.15);
  color: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-block-start: 2px;
}

.contact-info-item > div {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.contact-info-item__label {
  font-size: 0.75rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.5);
}

.contact-info-item__value {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1.6;
  word-break: break-word;
}

.contact-info-item__value a {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact-info-item__value a:hover {
  color: var(--color-accent-light);
  text-decoration: underline;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-base);
}

.form-label span {
  color: var(--color-accent);
}

.form-input {
  width: 100%;
  padding: 0.6875rem 0.875rem;
  font-size: 0.9375rem;
  color: var(--color-text-base);
  background-color: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-input:hover {
  border-color: var(--color-steel-300);
}

.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 128, 255, 0.15);
}

.form-input.is-error {
  border-color: #c0392b;
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.1);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235A7089' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  padding-inline-end: 2.5rem;
  cursor: pointer;
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
  line-height: 1.6;
}

.form-error {
  font-size: 0.8125rem;
  color: #c0392b;
  min-height: 1.2em;
  font-weight: var(--font-weight-medium);
}

.form-note {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

.form-note svg {
  flex-shrink: 0;
  color: var(--color-text-light);
}

/* Submit loading state */
#submitBtn.is-loading {
  opacity: 0.7;
  pointer-events: none;
  position: relative;
}

/* Success message */
.form-success {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  background-color: var(--color-white);
  border: 1.5px solid rgba(0, 128, 255, 0.25);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 3vw, 2rem);
  box-shadow: var(--shadow-md);
  margin-block-start: var(--space-2);
}

.form-success[hidden] {
  display: none !important;
}

.btn--gmail {
  background-color: #EA4335;
  color: var(--color-white);
  border-color: #EA4335;
}

.btn--gmail:hover,
.btn--gmail:focus-visible {
  background-color: #D93025;
  border-color: #D93025;
  box-shadow: 0 4px 16px rgba(234, 67, 53, 0.35);
}

.form-success__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  color: var(--color-primary);
}

.form-success__header svg {
  color: var(--color-secondary);
  flex-shrink: 0;
  margin-block-start: 2px;
}

.form-success__header strong {
  display: block;
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  margin-block-end: var(--space-1);
}

.form-success__header p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.form-success__summary {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-text-base);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 220px;
  overflow-y: auto;
}

.form-success__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block-start: var(--space-1);
}

/* ============================================================
   14. Footer
   ============================================================ */
.footer {
  background-color: var(--color-dark);
  color: rgba(255,255,255,0.7);
  padding-block-start: clamp(var(--space-12), 6vw, var(--space-20));
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  padding-block-end: var(--space-12);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

/* Brand col */
.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-white);
  margin-block-end: var(--space-4);
}

.footer__brand:hover {
  opacity: 0.85;
}

.footer__logo-icon {
  width: 28px;
  height: 28px;
}

.footer__brand-text {
  font-size: 1rem;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: 0.05em;
  color: var(--color-white);
}

.footer__tagline {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  margin-block-end: var(--space-4);
  line-height: 1.5;
}

.footer__desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 340px;
}

/* Nav col */
.footer__col-title {
  font-size: 0.75rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.4);
  margin-block-end: var(--space-5);
}

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

.footer__link {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition-fast);
  width: fit-content;
}

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

/* Contact col */
.footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.5;
}

.footer__contact-item svg {
  flex-shrink: 0;
  margin-block-start: 2px;
  color: var(--color-accent-light);
  opacity: 0.7;
}

/* Footer bottom */
.footer__bottom {
  padding-block: var(--space-5);
}

.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer__copyright,
.footer__legal {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
}

/* ============================================================
   15. Back to Top
   ============================================================ */
.back-to-top {
  position: fixed;
  inset-block-end: var(--space-8);
  inset-inline-end: var(--space-8);
  z-index: 900;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--transition-base),
    transform var(--transition-base),
    background-color var(--transition-fast);
  pointer-events: none;
}

.back-to-top:not([hidden]) {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background-color: var(--color-secondary);
}

/* ============================================================
   16. Reveal Animations
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.reveal--right {
  transform: translateX(28px);
}

.reveal.is-visible {
  opacity: 1;
  transform: translate(0);
}

/* Stagger siblings */
.products__grid .product-card:nth-child(2) { transition-delay: 0.08s; }
.products__grid .product-card:nth-child(3) { transition-delay: 0.16s; }
.products__grid .product-card:nth-child(4) { transition-delay: 0.24s; }

.why-us__grid .why-card:nth-child(2) { transition-delay: 0.08s; }
.why-us__grid .why-card:nth-child(3) { transition-delay: 0.16s; }
.why-us__grid .why-card:nth-child(4) { transition-delay: 0.24s; }

.industries__grid .industry-item:nth-child(2) { transition-delay: 0.06s; }
.industries__grid .industry-item:nth-child(3) { transition-delay: 0.12s; }
.industries__grid .industry-item:nth-child(4) { transition-delay: 0.18s; }
.industries__grid .industry-item:nth-child(5) { transition-delay: 0.24s; }
.industries__grid .industry-item:nth-child(6) { transition-delay: 0.30s; }

/* ============================================================
   17. Responsive – Tablet (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .contact__inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

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

  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .why-us__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .industries__grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .footer__brand-col {
    grid-column: 1 / -1;
  }
}

/* ============================================================
   18. Responsive – Mobile Navigation (≤ 860px)
   ============================================================ */
@media (max-width: 860px) {
  .navbar__hamburger {
    display: flex;
  }

  .navbar__cta {
    display: none;
  }

  .navbar__nav {
    position: fixed;
    inset-block-start: 0;
    inset-inline-end: 0;
    inset-block-end: 0;
    width: min(300px, 85vw);
    background-color: var(--color-dark);
    border-inline-start: 1px solid rgba(255,255,255,0.07);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 999;
    padding-block-start: calc(var(--navbar-height) + var(--space-4));
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }

  .navbar__nav.is-open {
    transform: translateX(0);
  }

  .navbar__links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4) var(--space-4) var(--space-8);
  }

  .navbar__link {
    padding: var(--space-4) var(--space-4);
    font-size: 1.0625rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    border-radius: 0;
  }

  /* Mobile CTA inside nav */
  .navbar__links::after {
    content: 'Minta Penawaran';
    display: block;
    margin: var(--space-5) var(--space-4) 0;
    padding: 0.875rem var(--space-6);
    text-align: center;
    font-weight: var(--font-weight-semibold);
    font-size: 1rem;
    color: var(--color-white);
    background-color: var(--color-accent);
    border-radius: var(--radius-md);
    cursor: pointer;
  }
}

/* ============================================================
   19. Responsive – Mobile (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  /* Hero */
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__content {
    order: 1;
  }

  .hero__visual {
    order: 2;
    display: none; /* Hide on small mobile to keep hero clean */
  }

  .hero__subtext {
    margin-inline: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  /* About */
  .about__inner {
    grid-template-columns: 1fr;
  }

  .about__image-col {
    display: flex;
    justify-content: center;
    order: 2;
  }

  .about__visual-card {
    max-width: 360px;
  }

  /* Contact */
  .contact__inner {
    grid-template-columns: 1fr;
  }

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

  /* Products */
  .products__grid {
    grid-template-columns: 1fr;
  }

  /* Why Us */
  .why-us__grid {
    grid-template-columns: 1fr;
  }

  /* Industries */
  .industries__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Footer */
  .footer__inner {
    grid-template-columns: 1fr;
  }

  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
  }

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

/* ============================================================
   20. Responsive – Small Mobile (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  :root {
    --navbar-height: 64px;
  }

  .hero__badge {
    font-size: 0.7rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn {
    text-align: center;
    width: 100%;
  }

  .industries__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .back-to-top {
    inset-block-end: var(--space-5);
    inset-inline-end: var(--space-5);
  }

  .section-title {
    font-size: 1.5rem;
  }

  .products__cta {
    flex-direction: column;
  }
}

/* ============================================================
   21. Print Styles
   ============================================================ */
@media print {
  .navbar,
  .back-to-top,
  .hero__visual,
  .contact-form {
    display: none !important;
  }

  body {
    font-size: 12pt;
    color: #000;
  }

  a {
    text-decoration: underline;
  }
}

/* ============================================================
   22. Reduced Motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}