/* ==========================================================================
   Distributor Oli Industri Dan Grease
   Aesthetic: Modern Architectural Luxury / Haute Minimalism (Inspired by ZARA / Aesop / Porsche Design)
   Typography: Outfit (Contemporary Geometric Display) + Plus Jakarta Sans (Precision Grotesk)
   Palette: Noir (#0C0C0D), Alabaster Paper (#FBFBFA), Brushed Bronze (#B89358), Hairline Greys
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

:root {
  --color-noir: #0A0F1D;
  --color-petroleum: #0B1120;
  --color-petroleum-card: #111827;
  --color-charcoal: #161F30;
  --color-stone: #242E42;
  --color-paper: #F8FAFC;
  --color-paper-alt: #F1F5F9;
  --color-white: #FFFFFF;
  --color-border-hairline: #E2E8F0;
  --color-border-subtle: #CBD5E1;
  --color-border-dark: #1E293B;
  
  /* Rich Industrial Lubricant Colors */
  --color-amber-oil: #F59E0B;
  --color-amber-deep: #D97706;
  --color-amber-dark: #B45309;
  --color-amber-glow: rgba(245, 158, 11, 0.18);
  --color-coolant-cyan: #0284C7;
  --color-foodgrade-green: #059669;

  --color-bronze: #D97706;
  --color-bronze-hover: #B45309;
  --color-bronze-light: #FEF3C7;
  --color-text-main: #0F172A;
  --color-text-muted: #475569;
  --color-text-subtle: #64748B;
}

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--color-text-main);
  background-color: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography Classes - Modern Architectural Luxury */
.font-serif-luxury {
  font-family: 'Outfit', 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  letter-spacing: -0.025em;
}

.font-display {
  font-family: 'Outfit', 'Plus Jakarta Sans', system-ui, sans-serif;
  letter-spacing: 0.04em;
}

.font-serif {
  font-family: 'Outfit', 'Plus Jakarta Sans', system-ui, sans-serif;
  letter-spacing: -0.02em;
}

.font-sans-editorial {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
}

.tracking-ultra-wide {
  letter-spacing: 0.22em;
}

.tracking-wide-luxury {
  letter-spacing: 0.12em;
}

.tracking-tight-editorial {
  letter-spacing: -0.035em;
}

/* Custom Scrollbar - Sleek Hairline */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: #F4F4F1;
}
::-webkit-scrollbar-thumb {
  background: #C4C4BE;
  border-radius: 0;
}
::-webkit-scrollbar-thumb:hover {
  background: #8A8A84;
}

/* Editorial Button System */
.btn-luxury-noir {
  background-color: var(--color-noir);
  color: #FFFFFF;
  border: 1px solid var(--color-noir);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.95rem 2rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  position: relative;
  overflow: hidden;
}

.btn-luxury-noir:hover {
  background-color: transparent;
  color: var(--color-noir);
}

.btn-luxury-outline {
  background-color: transparent;
  color: var(--color-noir);
  border: 1px solid var(--color-noir);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.95rem 2rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.btn-luxury-outline:hover {
  background-color: var(--color-noir);
  color: #FFFFFF;
}

.btn-luxury-white-outline {
  background-color: transparent;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.6);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.95rem 2rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.btn-luxury-white-outline:hover {
  background-color: #FFFFFF;
  color: var(--color-noir);
  border-color: #FFFFFF;
}

.btn-luxury-bronze {
  background-color: var(--color-bronze);
  color: #FFFFFF;
  border: 1px solid var(--color-bronze);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.95rem 2rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.btn-luxury-bronze:hover {
  background-color: var(--color-bronze-hover);
  border-color: var(--color-bronze-hover);
}

/* Rich Industrial Amber Oil Button */
.btn-luxury-amber {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  color: #0A0F1D;
  border: 1px solid #F59E0B;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  padding: 0.95rem 2rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  box-shadow: 0 4px 18px rgba(217, 119, 6, 0.28);
}

.btn-luxury-amber:hover {
  background: linear-gradient(135deg, #FBBF24 0%, #EA580C 100%);
  border-color: #FBBF24;
  color: #000000;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(217, 119, 6, 0.4);
}

/* Industrial Lubrication Badges */
.oil-badge-amber {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(245, 158, 11, 0.1);
  color: #B45309;
  border: 1px solid rgba(245, 158, 11, 0.35);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.3rem 0.65rem;
  border-radius: 2px;
}

.oil-badge-cyan {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(2, 132, 199, 0.1);
  color: #0369A1;
  border: 1px solid rgba(2, 132, 199, 0.35);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.3rem 0.65rem;
  border-radius: 2px;
}

.oil-badge-emerald {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(5, 150, 105, 0.1);
  color: #047857;
  border: 1px solid rgba(5, 150, 105, 0.35);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.3rem 0.65rem;
  border-radius: 2px;
}

.oil-badge-petroleum {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: #0B1120;
  color: #F8FAFC;
  border: 1px solid #1E293B;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 0.3rem 0.65rem;
  border-radius: 2px;
}

/* Industrial Technical Specification Desk Console */
.tech-spec-desk {
  background: linear-gradient(160deg, #0E1626 0%, #080D1A 100%);
  border: 1px solid rgba(245, 158, 11, 0.3);
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 50px -12px rgba(0, 0, 0, 0.8), 0 0 30px rgba(245, 158, 11, 0.08);
  border-radius: 6px;
}

.tech-spec-desk::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #F59E0B, #D97706, #38BDF8);
}

.spec-row-hover {
  transition: all 0.25s ease;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(15, 23, 42, 0.5);
}

.spec-row-hover:hover {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(245, 158, 11, 0.4);
  transform: translateX(3px);
}

.viscosity-meter-bar {
  height: 6px;
  background: linear-gradient(90deg, #38BDF8 0%, #F59E0B 50%, #EA580C 100%);
  border-radius: 9999px;
  position: relative;
}

/* Mobile Bottom Sticky Bar */
.mobile-sticky-bar {
  display: none;
}

@media (max-width: 767px) {
  .mobile-sticky-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 45;
    background-color: rgba(11, 17, 32, 0.97);
    backdrop-filter: blur(12px);
    border-top: 1px solid rgba(245, 158, 11, 0.25);
    padding: 0.75rem 1rem;
    gap: 0.65rem;
    box-shadow: 0 -8px 25px rgba(0, 0, 0, 0.35);
  }

  body {
    padding-bottom: 70px;
  }
}

.btn-luxury-wa {
  background-color: #0E291B;
  color: #FFFFFF;
  border: 1px solid #184A31;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding: 0.75rem 1.4rem;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-luxury-wa:hover {
  background-color: #123C27;
  border-color: #25D366;
  color: #FFFFFF;
}

/* Hairline Grid & Architectural Containers */
.hairline-border {
  border: 1px solid var(--color-border-hairline);
}

.hairline-t {
  border-top: 1px solid var(--color-border-hairline);
}

.hairline-b {
  border-bottom: 1px solid var(--color-border-hairline);
}

.hairline-l {
  border-left: 1px solid var(--color-border-hairline);
}

.hairline-r {
  border-right: 1px solid var(--color-border-hairline);
}

/* Specimen Card (Brand Catalog) */
.specimen-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-hairline);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.specimen-card:hover {
  border-color: var(--color-amber-oil);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px -12px rgba(217, 119, 6, 0.16);
}

.specimen-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #F59E0B, #D97706);
  transition: width 0.35s ease;
}

.specimen-card:hover::after {
  width: 100%;
}

/* Strategic Exhibit Box (Kunlun & Aimol) */
.exhibit-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-hairline);
  transition: all 0.4s ease;
  position: relative;
}

.exhibit-card:hover {
  border-color: var(--color-bronze);
  box-shadow: 0 20px 40px -15px rgba(184, 147, 88, 0.12);
}

/* Architectural Pillar Grid */
.pillar-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-hairline);
  padding: 2.25rem 1.75rem;
  transition: all 0.3s ease;
}

.pillar-card:hover {
  background-color: #FCFCFA;
  border-color: var(--color-noir);
}

/* Luxury Nav Link Hover Underline */
.editorial-nav-link {
  position: relative;
  padding-bottom: 0.25rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-noir);
  transition: color 0.2s ease;
}

.editorial-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-noir);
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.editorial-nav-link:hover::after,
.editorial-nav-link.active::after {
  width: 100%;
}

/* Floating WhatsApp Button - Discreet Luxury Style */
.wa-luxury-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background-color: var(--color-noir);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.65rem 1.25rem;
  border-radius: 9999px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.wa-luxury-float:hover {
  background-color: #123C27;
  border-color: #25D366;
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(18, 60, 39, 0.35);
}

.wa-luxury-pulse {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #25D366;
}

.wa-luxury-pulse::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1px solid #25D366;
  animation: wa-luxury-ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes wa-luxury-ping {
  75%, 100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

/* Editorial Monogram Badge */
.monogram-badge {
  font-family: 'Outfit', 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  border: 1px solid var(--color-border-hairline);
  background-color: #FFFFFF;
  color: var(--color-noir);
}

/* Section Watermark / Editorial Ghost Text */
.editorial-ghost-text {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(4rem, 12vw, 11rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 0.85;
  color: rgba(12, 12, 13, 0.03);
  user-select: none;
  pointer-events: none;
}

/* Form Styling - Haute Minimal */
.luxury-input {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-hairline);
  color: var(--color-noir);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.8125rem;
  padding: 0.85rem 1rem;
  transition: all 0.2s ease;
  border-radius: 0;
}

.luxury-input:focus {
  outline: none;
  border-color: var(--color-noir);
  box-shadow: 0 0 0 1px var(--color-noir);
}

.luxury-select {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-hairline);
  color: var(--color-noir);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.8125rem;
  padding: 0.85rem 1rem;
  transition: all 0.2s ease;
  border-radius: 0;
}

.luxury-select:focus {
  outline: none;
  border-color: var(--color-noir);
}