/* ==========================================================================
   KK Industries — Stylesheet
   ========================================================================== */

:root {
  --navy-900: #0a0a0a;
  --navy-800: #161616;
  --navy-700: #262626;
  --accent: #d7263d;
  --accent-dark: #a81b2d;
  --text: #1a1a1a;
  --muted: #6b6b6b;
  --bg: #ffffff;
  --bg-alt: #f7f4f5;
  --border: #e8e2e3;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.14);
  --max-w: 1140px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Inter', sans-serif;
  color: var(--navy-900);
  line-height: 1.2;
  margin: 0 0 0.6em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; }
h4 { font-size: 1rem; font-weight: 700; }

p { margin: 0 0 1em; color: var(--text); }

a { color: var(--navy-700); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent); }

ul { padding-left: 1.1rem; margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--accent-dark);
  font-weight: 700;
  margin: 0 0 0.75rem;
}

.lede {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 60ch;
}

.center { text-align: center; }

/* -- Buttons ----------------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .15s, background .15s, color .15s, border-color .15s, box-shadow .15s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: 0.5rem 0.95rem; font-size: 0.85rem; }
.btn-lg { padding: 1rem 1.75rem; font-size: 1rem; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--accent-dark); color: #fff; }

.btn-outline {
  background: transparent;
  color: var(--navy-800);
  border-color: var(--navy-800);
}
.btn-outline:hover { background: var(--navy-800); color: #fff; }

.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}
.btn-ghost:hover { background: rgba(255,255,255,0.2); color: #fff; }

/* -- Header / Nav ------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.25rem;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--navy-900);
  letter-spacing: -0.01em;
}
.brand-mark {
  background: var(--navy-900);
  color: #fff;
  border-radius: 8px;
  padding: 0.35rem 0.55rem;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
.brand-name { color: var(--navy-900); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}
.site-nav a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.25rem 0;
}
.site-nav a:hover { color: var(--accent-dark); }
.site-nav a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.site-nav a.btn { color: #fff; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  width: 40px; height: 40px;
  padding: 0;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy-900);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* -- Hero -------------------------------------------------------- */
.hero {
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(215,38,61,0.22), transparent 60%),
    linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%);
  color: #fff;
  padding: 4.5rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 3rem;
  align-items: center;
  position: relative;
}
.hero h1 { color: #fff; margin-bottom: 1rem; }
.hero .eyebrow { color: var(--accent); }
.hero .lede { color: rgba(255,255,255,0.85); }
.hero-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1.6rem 0 1.8rem;
}
.hero-badges {
  list-style: none;
  padding: 0;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin: 0;
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
}
.hero-badges strong {
  display: block;
  font-size: 1.4rem;
  color: #fff;
  font-weight: 700;
}

.hero-card {
  justify-self: end;
  width: 100%;
  max-width: 380px;
}
.hero-card-inner {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(6px);
}
.hero-card-inner h3 { color: #fff; margin-bottom: 1rem; }
.hero-card-inner ul {
  list-style: none;
  padding: 0;
  margin: 0;
  color: rgba(255,255,255,0.9);
}
.hero-card-inner li {
  padding: 0.55rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.95rem;
}
.hero-card-inner li::before {
  content: "✓";
  color: var(--accent);
  position: absolute;
  left: 0;
  font-weight: 700;
}
.hero-card-inner li:last-child { border-bottom: 0; }

/* -- Page hero (inner pages) -------------------------------------- */
.page-hero {
  background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
  color: #fff;
  padding: 3.5rem 0 3rem;
}
.page-hero h1 { color: #fff; }
.page-hero .lede { color: rgba(255,255,255,0.85); }
.page-hero .eyebrow { color: var(--accent); }
.page-hero a { color: var(--accent); }
.page-hero a:hover { color: #fff; }

/* -- Sections ---------------------------------------------------- */
.section { padding: 4rem 0; }
.section-alt { background: var(--bg-alt); }

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2.5rem;
}
.section-head p { color: var(--muted); font-size: 1.05rem; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

/* -- Grids & Cards ----------------------------------------------- */
.grid {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(215,38,61,0.1);
  color: var(--accent-dark);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}
.card p { color: var(--muted); margin-bottom: 0; }

/* Stat list */
.stat-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.stat-list li {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--navy-900);
  margin-bottom: 0.2rem;
}
.stat-label { font-size: 0.9rem; color: var(--muted); }

/* Check list */
.check-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1em;
}
.check-list li {
  padding: 0.45rem 0 0.45rem 1.8rem;
  position: relative;
  color: var(--text);
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 0.75rem;
  display: grid;
  place-items: center;
  font-weight: 700;
}

/* Steps */
.steps .step { text-align: center; padding: 1.75rem 1rem; }
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--navy-900);
  color: #fff;
  font-weight: 700;
  display: inline-grid;
  place-items: center;
  margin-bottom: 0.9rem;
}

/* -- Products grid ----------------------------------------------- */
.products { margin-bottom: 0; }
.product-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s, box-shadow .2s;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.product-card-feature {
  border: 2px solid var(--accent);
}
.product-img {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--navy-800), var(--navy-700));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 3.5rem;
  position: relative;
}
.product-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 24px 24px;
}
.product-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-body p { color: var(--muted); }

.tag-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tag-list li {
  background: var(--bg-alt);
  color: var(--navy-800);
  font-size: 0.78rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-weight: 500;
}
.product-body .btn { align-self: flex-start; margin-top: auto; }

/* -- CTA band ---------------------------------------------------- */
.cta-band {
  background: linear-gradient(135deg, var(--navy-900), var(--navy-800));
  color: #fff;
  padding: 3rem 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta-band h2 { color: #fff; margin-bottom: 0.25rem; }
.cta-band p { color: rgba(255,255,255,0.8); margin: 0; }

/* -- Contact page ----------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: start;
}

.info-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}
.info-list li {
  display: flex;
  flex-direction: column;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}
.info-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.2rem;
  font-weight: 600;
}
.info-list a { color: var(--navy-800); font-weight: 500; }
.info-list a:hover { color: var(--accent); }

.info-box {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 1.3rem 1.4rem;
}
.info-box h3 { margin-bottom: 0.6rem; }

/* Form */
.inquiry-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}
.inquiry-form h2 { margin-bottom: 1.5rem; }

.form-row { margin-bottom: 1.1rem; }
.form-row.two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-row label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--navy-900);
}
.form-row label span { color: var(--accent); }

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(215,38,61,0.18);
}
.form-row textarea { resize: vertical; }
.form-row input.invalid,
.form-row select.invalid,
.form-row textarea.invalid {
  border-color: #d93025;
  box-shadow: 0 0 0 3px rgba(217,48,37,0.12);
}

.form-note {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0.8rem 0 0;
}
.form-success {
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  border-radius: 8px;
  background: #e8f5ed;
  color: #1f6b3a;
  border: 1px solid #b8dcc3;
  font-weight: 500;
}

/* -- Footer ----------------------------------------------------- */
.site-footer {
  background: var(--navy-900);
  color: rgba(255,255,255,0.75);
  padding: 3rem 0 1.5rem;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-grid h4 {
  color: #fff;
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
}
.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-grid li { padding: 0.25rem 0; font-size: 0.92rem; }
.footer-grid a { color: rgba(255,255,255,0.75); }
.footer-grid a:hover { color: var(--accent); }
.brand-footer { color: #fff; margin-bottom: 0.6rem; }
.brand-footer .brand-name { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.25rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
}
.footer-bottom p { margin: 0; color: inherit; }

/* -- Responsive ------------------------------------------------- */
@media (max-width: 960px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; gap: 2rem; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-card { justify-self: stretch; max-width: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem 1.25rem 1.25rem;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a {
    padding: 0.75rem 0.25rem;
    border-bottom: 1px solid var(--border);
  }
  .site-nav a:last-child { border-bottom: 0; }
  .site-nav a.btn { margin-top: 0.5rem; text-align: center; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row.two { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .hero { padding: 3rem 0 3.5rem; }
  .section { padding: 2.75rem 0; }
}