/* 
  SK ENTERPRISES - Precision Textile Engineering Theme
  Primary Colors:
  Graphite: #0B0F14
  Dark Steel: #151B23
  Steel: #27313C
  Technical Blue: #00AEEF
  Light Blue: #67D7FF
  Off White: #F4F6F8
  Text: #CBD5E1
  White: #FFFFFF
  CTA Orange: #F59E0B
*/

:root {
  --graphite: #F8FAFC; /* Light gray background */
  --dark-steel: #FFFFFF; /* White cards */
  --steel: #CBD5E1; /* Borders */
  --tech-blue: #0284C7; /* Darker tech blue for better contrast on light */
  --light-blue: #0EA5E9;
  --off-white: #E2E8F0;
  --text-muted: #64748B;
  --white: #0F172A; /* Overrides what used to be white to become dark text */
  --cta-orange: #F59E0B;
  
  --font-primary: 'Inter', system-ui, sans-serif;
  --font-tech: 'Roboto Mono', monospace;
}

body {
  background-color: var(--graphite);
  color: var(--text-muted);
  font-family: var(--font-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Background Grid Pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(rgba(2, 132, 199, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(2, 132, 199, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -1;
  pointer-events: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--white);
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: var(--tech-blue);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--light-blue);
}

/* Typography Utility */
.tech-label {
  font-family: var(--font-tech);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--tech-blue);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.tech-label::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 2px;
  background-color: var(--tech-blue);
}

.text-orange { color: var(--cta-orange) !important; }
.bg-dark-steel { background-color: var(--dark-steel) !important; }
.bg-graphite { background-color: var(--graphite) !important; }
.bg-tech-blue { background-color: var(--tech-blue) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-white { color: var(--white) !important; }
.bg-dark { background-color: var(--dark-steel) !important; }
.border-secondary { border-color: var(--steel) !important; }
.table-dark { --bs-table-bg: var(--dark-steel); --bs-table-color: var(--white); --bs-table-border-color: var(--steel); }

/* Buttons */
.btn-tech {
  background-color: transparent;
  color: var(--tech-blue);
  border: 1px solid var(--tech-blue);
  border-radius: 0;
  font-family: var(--font-tech);
  text-transform: uppercase;
  font-size: 0.85rem;
  padding: 0.75rem 1.5rem;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  z-index: 1;
}

.btn-tech::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 100%;
  background-color: var(--tech-blue);
  transition: all 0.3s ease;
  z-index: -1;
}

.btn-tech:hover {
  color: var(--graphite);
}
.btn-tech:hover::before {
  width: 100%;
}

.btn-cta {
  background-color: var(--cta-orange);
  color: var(--graphite);
  border: none;
  border-radius: 0;
  font-family: var(--font-tech);
  text-transform: uppercase;
  font-weight: 700;
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.2);
}

.btn-cta:hover {
  background-color: #d97706; /* slightly darker orange */
  color: var(--white);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
}

/* Header & Navbar */
.main-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1030;
  transition: background-color 0.4s ease, padding 0.4s ease;
  padding: 1rem 0;
  background: transparent;
}

.main-header.scrolled {
  background-color: rgba(248, 250, 252, 0.95);
  backdrop-filter: blur(10px);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--steel);
}

.navbar-brand {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 1px;
}

.brand-tag {
  font-family: var(--font-tech);
  font-size: 0.65rem;
  color: var(--tech-blue);
  letter-spacing: 0.15em;
}

.nav-link {
  font-family: var(--font-tech);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted) !important;
  letter-spacing: 0.05em;
  padding: 0.5rem 1rem !important;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--white) !important;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 1rem; right: 1rem;
  height: 2px;
  background-color: var(--tech-blue);
  box-shadow: 0 0 8px var(--tech-blue);
}

.nav-pills .nav-link.active {
  background-color: var(--tech-blue) !important;
  color: #FFFFFF !important;
  border-color: var(--tech-blue) !important;
}
.nav-pills .nav-link.active::after {
  display: none;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-tech);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--tech-blue);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--tech-blue);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
  100% { opacity: 1; transform: scale(1); }
}

/* Cards */
.tech-card {
  background-color: var(--dark-steel);
  border: 1px solid var(--steel);
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.tech-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 0;
  background-color: var(--tech-blue);
  transition: height 0.3s ease;
}

.tech-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 174, 239, 0.3);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.tech-card:hover::before {
  height: 100%;
}

.card-number {
  font-family: var(--font-tech);
  font-size: 2rem;
  font-weight: 300;
  color: var(--steel);
  position: absolute;
  top: 1rem; right: 1rem;
  line-height: 1;
}

/* Forms */
.tech-input {
  background-color: #FFFFFF;
  border: 1px solid var(--steel);
  color: var(--white);
  border-radius: 0;
  padding: 0.75rem 1rem;
  font-family: var(--font-primary);
}
.tech-input:focus {
  background-color: #FFFFFF;
  border-color: var(--tech-blue);
  box-shadow: 0 0 0 0.2rem rgba(2, 132, 199, 0.25);
  color: var(--white);
}
.tech-input::placeholder {
  color: #94A3B8;
}

.form-label {
  font-family: var(--font-tech);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Machine Grid & Cards */
.machine-card {
  background-color: var(--dark-steel);
  border: 1px solid var(--steel);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.machine-img-wrapper {
  position: relative;
  overflow: hidden;
  padding-top: 75%; /* 4:3 Aspect */
  background: var(--graphite);
}

.machine-img-wrapper img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  mix-blend-mode: luminosity; /* Industrial feel */
}

.machine-card:hover .machine-img-wrapper img {
  transform: scale(1.05);
  mix-blend-mode: normal;
}

.machine-card-body {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.machine-category-label {
  font-family: var(--font-tech);
  font-size: 0.7rem;
  color: var(--tech-blue);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.machine-title {
  font-size: 1.25rem;
  color: var(--white);
  margin-bottom: 1rem;
}

/* Footer */
.main-footer {
  background-color: var(--graphite);
  border-top: 1px solid var(--steel);
  padding: 4rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.footer-heading {
  font-family: var(--font-tech);
  font-size: 0.9rem;
  color: var(--white);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--tech-blue);
  padding-left: 5px;
}

/* Cookie Consent */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.98);
  border-top: 1px solid var(--tech-blue);
  padding: 1.5rem 0;
  z-index: 2000;
  box-shadow: 0 -10px 30px rgba(0,0,0,0.5);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}
.cookie-banner.show {
  transform: translateY(0);
}

/* Utils */
.section-padding { padding: 6rem 0; }
.min-vh-100 { min-height: 100vh; }
.z-1 { z-index: 1; }

/* Technical UI Grid lines */
.tech-border-top { border-top: 1px solid var(--steel); }
.tech-border-bottom { border-bottom: 1px solid var(--steel); }
.tech-border-start { border-left: 1px solid var(--steel); }
.tech-border-end { border-right: 1px solid var(--steel); }

/* Responsive adjustments */
@media (max-width: 991.98px) {
  .main-header { padding: 0.5rem 0; background-color: var(--graphite); }
  .navbar-collapse {
    background-color: var(--graphite);
    padding: 1rem;
    border: 1px solid var(--steel);
    margin-top: 1rem;
  }
}