/* ==========================================================================
   UNITED ELITE CHEMICALS (UEC) — DESIGN SYSTEM & MASTER STYLESHEET
   Inspired by:
   - chemicals.el-mohandes.com (Industrial layout, interactive molecule field, 48h promise, facilities)
   - sigmaaldrich.com (Rigorous chemical datasheets, CAS/Formula badges, GHS hazards, matrix view)
   - lotioncrafter.com (Vibrant, ultra-realistic product aesthetics & pure studio presentation)
   ========================================================================== */

/* --- GOOGLE FONTS IMPORT --- */
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* --- DESIGN TOKENS & CSS VARIABLES --- */
:root {
  /* Brand Core Colors (Clean Light Scientific Palette) */
  --color-primary: #0f2b5c;         /* Deep Navy Primary */
  --color-primary-light: #1a428a;   /* Royal Blue Accent */
  --color-primary-dark: #0a1c3d;    /* Midnight Navy */
  --color-accent-teal: #0284c7;     /* Tech Teal / Cyan */
  --color-accent-teal-light: #38bdf8;
  --color-accent-teal-bg: #e0f2fe;
  
  /* Chemical & Functional Highlights */
  --color-chlorine: #059669;        /* Water / Green / Bio */
  --color-chlorine-bg: #ecfdf5;
  --color-fertilizer: #0d9488;      /* Agro Emerald / Teal */
  --color-acid: #ea580c;            /* Warning Acid Amber / Orange */
  --color-acid-bg: #fff7ed;
  --color-danger: #dc2626;          /* GHS Red */
  --color-warning: #f59e0b;         /* Caution Yellow */
  --color-success: #16a34a;

  /* Neutrals & Surfaces (Clean Light Theme) */
  --bg-page: #f8fafc;               /* Crisp Off-White */
  --bg-surface: #ffffff;            /* Pure White */
  --bg-surface-alt: #f1f5f9;        /* Light Slate Gray */
  --bg-surface-tint: #f0f7ff;       /* Very Subtle Ice Blue */
  --border-subtle: #e2e8f0;         /* Soft Gray Border */
  --border-strong: #cbd5e1;
  --border-highlight: #bfdbfe;

  /* Typography Colors */
  --text-main: #0f172a;             /* Slate 900 for high readability */
  --text-secondary: #334155;        /* Slate 700 */
  --text-muted: #64748b;            /* Slate 500 */
  --text-inverse: #ffffff;

  /* Typography Fonts */
  --font-arabic: 'Cairo', system-ui, -apple-system, sans-serif;
  --font-latin: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Elevation Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.1), 0 4px 12px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 45px rgba(15, 23, 42, 0.14), 0 8px 18px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 30px rgba(2, 132, 199, 0.18);

  /* Layout Spacing & Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --container-max: 1340px;
  --header-height: 80px;
  --topbar-height: 42px;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- RESET & GLOBAL SETTINGS --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-arabic);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  direction: rtl;
  text-align: right;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* LTR English Override */
body[dir="ltr"] {
  font-family: var(--font-latin);
  direction: ltr;
  text-align: left;
}

body[dir="ltr"] .font-mono,
.font-mono {
  font-family: var(--font-mono);
  direction: ltr !important;
  display: inline-block;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   TOP BAR (Hotline, ISO Accreditation, Quick Lang)
   ========================================================================== */
.top-bar {
  background: var(--color-primary-dark);
  color: #e2e8f0;
  font-size: 0.8125rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  position: relative;
  z-index: 100;
  padding: 0 16px;
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}

@media (min-width: 1241px) {
  .top-bar-inner {
    padding-right: 24px;
    padding-left: 20px;
    transform: translateX(8px);
  }
  body[dir="ltr"] .top-bar-inner {
    padding-right: 20px;
    padding-left: 24px;
    transform: translateX(10px);
  }
}

.top-contacts {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.top-contact-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #cbd5e1;
  transition: color var(--transition-fast);
}

.top-contact-item:hover {
  color: #ffffff;
}

.top-contact-item svg {
  color: var(--color-accent-teal-light);
  flex-shrink: 0;
}

.top-badges {
  display: flex;
  align-items: center;
  gap: 14px;
}

.iso-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(2, 132, 199, 0.2);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #bae6fd;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.iso-pill svg {
  color: #38bdf8;
}

.lang-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: all var(--transition-fast);
}

.lang-switch-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}

/* ==========================================================================
   FULL-PAGE INTERACTIVE MOLECULE FIELD (Direct El-Mohandes Benchmark)
   ========================================================================== */
.field {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0; /* Strictly behind all content and products */
  pointer-events: none;
  overflow: hidden;
}

#mol {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.5;
}

/* Semi-transparent section backgrounds so interactive molecules float underneath */
.catalog-section,
.calculator-section,
.logistics-section,
.industries-section,
.quality-section,
.rfq-section {
  position: relative;
  z-index: 2;
  background: rgba(248, 250, 252, 0.88);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* ==========================================================================
   MAIN STICKY HEADER & NON-OVERLAPPING BRAND
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
  transition: all var(--transition-normal);
  padding: 0 16px;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 14px;
  width: 100%;
}

@media (min-width: 1241px) {
  .header-inner {
    padding-right: 24px;
    padding-left: 20px;
    transform: translateX(8px); /* Moves header slightly to the right on ultra-wide desktop */
  }
  body[dir="ltr"] .header-inner {
    padding-right: 20px;
    padding-left: 24px;
    transform: translateX(10px);
  }
}

/* Brand Logo (Fixed Layout — Never Overlaps) */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
  min-width: max-content;
}

.brand-logo-img {
  height: 44px;
  width: auto;
  max-width: 90px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
  filter: drop-shadow(0 2px 4px rgba(15, 23, 42, 0.08));
}

.brand-titles {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex-shrink: 0;
  min-width: max-content;
  padding-right: 12px;
  border-right: 2px solid var(--border-subtle);
}

body[dir="ltr"] .brand-titles {
  padding-right: 0;
  padding-left: 12px;
  border-right: none;
  border-left: 2px solid var(--border-subtle);
}

.brand-name-ar {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.25;
  letter-spacing: -0.2px;
  white-space: nowrap;
}

.brand-name-en {
  font-family: var(--font-latin);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent-teal);
  letter-spacing: 0.6px;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Nav Menu */
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 1;
}

.nav-link {
  padding: 6px 8px;
  font-size: 0.835rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: var(--bg-surface-tint);
}

/* Header Utilities */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.btn-search-trigger:hover {
  background: #ffffff;
  border-color: var(--color-accent-teal);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-quote-header {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #ffffff;
  padding: 9px 18px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
  box-shadow: 0 3px 12px rgba(15, 43, 92, 0.22);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-quote-header:hover {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-teal));
  box-shadow: 0 5px 18px rgba(2, 132, 199, 0.35);
  transform: translateY(-1px);
}

.burger-btn {
  display: none;
  padding: 8px;
  border-radius: var(--radius-sm);
  color: var(--color-primary);
}

/* ==========================================================================
   HERO SECTION (El-Mohandes Style + Molecule Canvas)
   ========================================================================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #071938 0%, #0c2552 50%, #0f346c 100%);
  color: #ffffff;
  padding: 80px 0 90px;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Background Interactive Molecule Canvas */
#mol-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.88;
}

.hero-overlay-radial {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 75% 30%, rgba(2, 132, 199, 0.22) 0%, transparent 65%);
  pointer-events: none;
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 960px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(2, 132, 199, 0.18);
  border: 1px solid rgba(56, 189, 248, 0.35);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: #7dd3fc;
  margin-bottom: 20px;
  backdrop-filter: blur(6px);
}

.hero-kicker-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 10px #38bdf8;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 30px;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.hero-title b {
  color: #38bdf8;
  font-weight: 900;
}

.hero-lead {
  font-size: clamp(1rem, 1.3vw, 1.18rem);
  color: #cbd5e1;
  line-height: 1.8;
  max-width: 820px;
  margin-bottom: 34px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 45px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  font-size: 0.98rem;
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(2, 132, 199, 0.35);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1 0%, #0284c7 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.45);
}

.btn-outline-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 13px 24px;
  border-radius: var(--radius-full);
  font-size: 0.98rem;
  font-weight: 600;
  backdrop-filter: blur(6px);
  transition: all var(--transition-fast);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: #ffffff;
  transform: translateY(-2px);
}

/* Quick Sector Navigation Pills in Hero */
.hero-sector-pills {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.sector-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: #e2e8f0;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(4px);
}

.sector-pill:hover {
  background: rgba(2, 132, 199, 0.25);
  border-color: #38bdf8;
  color: #ffffff;
  transform: translateY(-1px);
}

/* Hero Metrics Strip (El-Mohandes stats) */
.hero-metrics-bar {
  position: relative;
  z-index: 3;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.metric-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.metric-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.14);
  border: 1px solid rgba(56, 189, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #38bdf8;
  flex-shrink: 0;
}

.metric-text {
  display: flex;
  flex-direction: column;
}

.metric-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
  font-family: var(--font-latin);
}

.metric-label {
  font-size: 0.825rem;
  color: #94a3b8;
  margin-top: 3px;
}

/* ==========================================================================
   THE 48-HOUR PROMISE BANNER (Direct El-Mohandes Benchmark)
   ========================================================================== */
.promise-strip {
  background: linear-gradient(90deg, #0284c7 0%, #0369a1 50%, #0f2b5c 100%);
  color: #ffffff;
  padding: 16px 0;
  font-size: 0.95rem;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.promise-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.promise-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.promise-badge svg {
  color: #fef08a;
  flex-shrink: 0;
}

.promise-fleet-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.15);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: all var(--transition-fast);
}

.promise-fleet-link:hover {
  background: #ffffff;
  color: var(--color-primary);
}

/* ==========================================================================
   PRODUCT CATALOG & SIGMA-ALDRICH MATRIX ENGINE
   ========================================================================== */
.catalog-section {
  padding: 80px 0;
  background: var(--bg-page);
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 40px;
}

.section-kicker {
  display: inline-block;
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--color-accent-teal);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Interactive Filter & Search Control Panel */
.catalog-controls {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 30px;
  position: relative;
  z-index: 10;
}

.search-bar-row {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
}

.search-icon {
  position: absolute;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

body[dir="ltr"] .search-icon {
  right: auto;
  left: 16px;
}

.catalog-search-input {
  width: 100%;
  height: 48px;
  padding: 0 48px 0 20px;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

body[dir="ltr"] .catalog-search-input {
  padding: 0 20px 0 48px;
}

.catalog-search-input:focus {
  outline: none;
  background: #ffffff;
  border-color: var(--color-accent-teal);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
}

.filter-categories-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.cat-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.cat-tab-btn {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-surface-alt);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.cat-tab-btn:hover {
  color: var(--color-primary);
  background: var(--bg-surface-tint);
}

.cat-tab-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(15, 43, 92, 0.25);
}

.view-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.view-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-alt);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.view-btn:hover {
  color: var(--color-primary);
  border-color: var(--border-strong);
}

.view-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.results-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding: 0 4px;
}

.results-count b {
  color: var(--color-primary);
}

/* ==========================================================================
   PRODUCT GROUPS & SIDE-SCROLLING SHELVES (Grouped Horizontal Rows)
   ========================================================================== */
.products-groups-container {
  display: flex;
  flex-direction: column;
  gap: 52px;
  position: relative;
  z-index: 10;
  width: 100%;
}

.product-group-row {
  position: relative;
  background: transparent;
  width: 100%;
}

.product-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding: 0 4px;
  flex-wrap: wrap;
  gap: 12px;
}

.product-group-title-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
}

.product-group-icon {
  font-size: 1.8rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.product-group-heading-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.product-group-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  margin: 0;
  line-height: 1.3;
}

.product-group-count {
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--bg-surface-tint);
  color: var(--color-accent-teal);
  border: 1px solid var(--border-highlight);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.product-group-subtitle {
  font-size: 0.825rem;
  color: var(--text-muted);
  display: block;
  margin-top: 3px;
  max-width: 720px;
  line-height: 1.5;
}

.product-group-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.group-nav-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: #ffffff;
  border: 1.5px solid var(--border-subtle);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.group-nav-btn:hover {
  background: var(--bg-surface-tint);
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  transform: scale(1.08);
  box-shadow: var(--shadow-md);
}

.group-nav-btn.group-nav-next {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.group-nav-btn.group-nav-next:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  color: #ffffff;
}

.group-nav-btn.is-disabled,
.group-nav-btn:disabled {
  opacity: 0.3;
  pointer-events: none;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.group-nav-btn:active {
  transform: scale(0.95);
}

.product-group-carousel-wrap {
  position: relative;
  width: 100%;
}

.product-group-carousel {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 10px 4px 22px 4px;
  scroll-behavior: smooth;
  margin: 0 -4px;
  cursor: grab;
}

.product-group-carousel.is-dragging {
  cursor: grabbing !important;
  scroll-behavior: auto !important;
  scroll-snap-type: none !important;
  user-select: none;
}

.product-group-carousel.is-dragging .product-card {
  pointer-events: none;
}

.product-group-carousel::-webkit-scrollbar {
  display: none;
}

/* Card in side-scrolling line */
.product-group-carousel .product-card {
  flex: 0 0 310px;
  width: 310px;
  scroll-snap-align: start;
  margin: 0;
  box-shadow: var(--shadow-sm);
}

.product-group-carousel .product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-highlight);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 26px;
  position: relative;
  z-index: 10;
}

.product-card {
  background: #ffffff !important;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  z-index: 10;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-highlight);
  z-index: 15;
}

/* Product Card Image Container */
.product-card-thumb-wrap {
  position: relative;
  z-index: 10;
  width: 100%;
  height: 220px;
  background: #ffffff !important;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.product-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card-img {
  transform: scale(1.05);
}

/* Category Badge on Image */
.product-cat-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
  z-index: 2;
}

body[dir="ltr"] .product-cat-tag {
  right: auto;
  left: 14px;
}

.cat-fertilizers { background: rgba(13, 148, 136, 0.92); color: #ffffff; }
.cat-acids { background: rgba(234, 88, 12, 0.92); color: #ffffff; }
.cat-water { background: rgba(2, 132, 199, 0.92); color: #ffffff; }
.cat-industrial { background: rgba(15, 43, 92, 0.92); color: #ffffff; }

/* Sigma-Aldrich Formula Pill on Image */
.product-formula-tag {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.82);
  color: #38bdf8;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
  z-index: 2;
  backdrop-filter: blur(4px);
}

body[dir="ltr"] .product-formula-tag {
  left: auto;
  right: 12px;
}

/* Product Card Body */
.product-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.product-cas-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-surface-alt);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.product-purity-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-chlorine);
  background: var(--color-chlorine-bg);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.product-card-title-ar {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.35;
  margin-bottom: 4px;
}

.product-card-title-en {
  font-family: var(--font-latin);
  font-size: 0.825rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 12px;
}

.product-card-specs-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
  padding: 10px;
  background: var(--bg-surface-alt);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.spec-mini-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.spec-mini-label {
  color: var(--text-muted);
}

.spec-mini-val {
  font-weight: 700;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.product-packaging-tag {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 18px;
  margin-top: auto;
}

.product-packaging-tag svg {
  color: var(--color-accent-teal);
  flex-shrink: 0;
}

/* Card Action Buttons */
.product-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
}

.btn-card-tds {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--bg-surface-alt);
  color: var(--color-primary);
  border: 1px solid var(--border-subtle);
  padding: 9px 12px;
  border-radius: var(--radius-md);
  font-size: 0.825rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.btn-card-tds:hover {
  background: var(--bg-surface-tint);
  border-color: var(--color-accent-teal);
  color: var(--color-accent-teal);
}

.btn-card-quote {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--color-primary);
  color: #ffffff;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  font-size: 0.825rem;
  font-weight: 700;
  transition: all var(--transition-fast);
}

.btn-card-quote:hover {
  background: var(--color-accent-teal);
  box-shadow: 0 3px 10px rgba(2, 132, 199, 0.3);
}

/* ==========================================================================
   SIGMA-ALDRICH TABLE MATRIX VIEW
   ========================================================================== */
.table-matrix-wrapper {
  background: #ffffff !important;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 10;
}

.sigma-matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: right;
  font-size: 0.875rem;
}

body[dir="ltr"] .sigma-matrix-table {
  text-align: left;
}

.sigma-matrix-table th {
  background: var(--bg-surface-alt);
  padding: 14px 16px;
  color: var(--color-primary);
  font-weight: 700;
  border-bottom: 2px solid var(--border-subtle);
  white-space: nowrap;
}

.sigma-matrix-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

.sigma-matrix-table tr:hover {
  background: var(--bg-surface-tint);
}

.table-product-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.table-product-thumb {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border-subtle);
}

.table-product-names {
  display: flex;
  flex-direction: column;
}

.table-product-ar {
  font-weight: 700;
  color: var(--color-primary);
}

.table-product-en {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   SIGMA-ALDRICH PRODUCT TECHNICAL DOSSIER (MODAL DIALOG)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 980px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-strong);
  position: relative;
  display: flex;
  flex-direction: column;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-header {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.modal-title-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.modal-close-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: #fee2e2;
  color: #dc2626;
}

.modal-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Two Column Top (Image + Sigma Specs Identity) */
.modal-top-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 30px;
}

.modal-image-box {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.modal-main-img {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.modal-specs-col {
  display: flex;
  flex-direction: column;
}

.modal-product-title-ar {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.25;
  margin-bottom: 4px;
}

.modal-product-title-en {
  font-family: var(--font-latin);
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* Sigma Aldrich Chemical Identity Badges Strip */
.sigma-badges-strip {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.sigma-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.sigma-badge b {
  font-family: var(--font-mono);
  color: var(--color-primary);
}

/* GHS Safety & Hazard Box */
.ghs-hazard-box {
  background: #fff8f6;
  border: 1px solid #ffedd5;
  border-left: 4px solid var(--color-acid);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 20px;
}

body[dir="ltr"] .ghs-hazard-box {
  border-left: 1px solid #ffedd5;
  border-right: 4px solid var(--color-acid);
}

.ghs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.ghs-signal {
  font-size: 0.825rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.signal-danger {
  background: #fee2e2;
  color: #b91c1c;
}

.signal-warning {
  background: #fef3c7;
  color: #b45309;
}

.ghs-pictograms {
  display: flex;
  gap: 6px;
}

.ghs-icon-diamond {
  width: 28px;
  height: 28px;
  background: #ffffff;
  border: 2px solid #dc2626;
  transform: rotate(45deg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 4px;
}

.ghs-icon-diamond svg {
  transform: rotate(-45deg);
  color: #0f172a;
}

/* Modal Tabbed Specifications (Sigma Aldrich Style) */
.modal-tabs {
  display: flex;
  border-bottom: 2px solid var(--border-subtle);
  gap: 20px;
  margin-top: 10px;
}

.modal-tab-btn {
  padding: 10px 4px;
  font-weight: 700;
  color: var(--text-muted);
  border-bottom: 3px solid transparent;
  transition: all var(--transition-fast);
  font-size: 0.95rem;
}

.modal-tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.modal-tab-pane {
  display: none;
  padding-top: 18px;
}

.modal-tab-pane.active {
  display: block;
}

/* Full Technical Specifications Table */
.tds-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.tds-table th {
  background: var(--bg-surface-alt);
  padding: 10px 14px;
  color: var(--color-primary);
  font-weight: 700;
  border: 1px solid var(--border-subtle);
  text-align: right;
}

body[dir="ltr"] .tds-table th {
  text-align: left;
}

.tds-table td {
  padding: 10px 14px;
  border: 1px solid var(--border-subtle);
}

.tds-table td.mono {
  font-family: var(--font-mono);
  font-weight: 600;
}

/* Modal Actions Footer */
.modal-footer {
  padding: 18px 28px;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface-alt);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  position: sticky;
  bottom: 0;
  z-index: 10;
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

.modal-footer-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-whatsapp-rfq {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #25d366;
  color: #ffffff;
  padding: 11px 22px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 3px 12px rgba(37, 211, 102, 0.3);
  transition: all var(--transition-fast);
}

.btn-whatsapp-rfq:hover {
  background: #1eb956;
  transform: translateY(-1px);
}

/* ==========================================================================
   INTERACTIVE DOSAGE & APPLICATION CALCULATOR (Novel Functional Feature)
   ========================================================================== */
.calculator-section {
  padding: 80px 0;
  background: #ffffff;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: flex-start;
}

.calc-card {
  background: var(--bg-surface-tint);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.calc-selector-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.calc-type-btn {
  flex: 1;
  padding: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
  border-radius: var(--radius-md);
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.calc-type-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent-teal);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
}

.calc-result-box {
  margin-top: 24px;
  background: #ffffff;
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
}

.calc-result-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.calc-result-val {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
  margin: 6px 0;
}

.calc-result-sub {
  font-size: 0.8rem;
  color: var(--color-chlorine);
  font-weight: 600;
}

/* ==========================================================================
   48-HOUR FLEET & LOGISTICS ESTIMATOR (El-Mohandes Feature)
   ========================================================================== */
.logistics-section {
  padding: 80px 0;
  background: var(--bg-page);
}

.transit-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.gov-selector-wrapper {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.gov-select-input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-alt);
  font-weight: 600;
  color: var(--color-primary);
}

.transit-result-card {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.transit-time-num {
  font-size: 2.8rem;
  font-weight: 800;
  color: #38bdf8;
  font-family: var(--font-latin);
}

/* ==========================================================================
   INDUSTRIES & MARKETS (El-Mohandes Matrix)
   ========================================================================== */
.industries-section {
  padding: 80px 0;
  background: #ffffff;
}

.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.industry-card {
  background: var(--bg-page);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.industry-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-teal);
  box-shadow: var(--shadow-lg);
  background: #ffffff;
}

.industry-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-accent-teal-bg);
  color: var(--color-accent-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.industry-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.industry-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.industry-prods-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.industry-prod-chip {
  font-size: 0.75rem;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

/* ==========================================================================
   QUALITY, HSE & ACCREDITATION (El-Mohandes Benchmark)
   ========================================================================== */
.quality-section {
  padding: 80px 0;
  background: var(--bg-surface-alt);
}

.quality-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.cert-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

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

.cert-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--color-accent-teal-bg);
  color: var(--color-accent-teal);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.cert-desc {
  font-size: 0.825rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   INSTANT RFQ & QUOTATION HUB
   ========================================================================== */
.rfq-section {
  padding: 80px 0;
  background: #ffffff;
}

.rfq-card {
  background: linear-gradient(135deg, #f8fafc 0%, #f0f7ff 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.rfq-form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--color-primary-dark);
  color: #94a3b8;
  padding: 70px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand-title {
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.footer-heading {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-list a:hover {
  color: #38bdf8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #64748b;
  flex-wrap: wrap;
  gap: 12px;
}

/* Floating WhatsApp / Action Buttons */
.floating-actions {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

body[dir="ltr"] .floating-actions {
  left: auto;
  right: 24px;
}

.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-fast);
  color: #ffffff;
}

.float-btn-whatsapp {
  background: #25d366;
}

.float-btn-whatsapp:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

.float-btn-top {
  background: var(--color-primary);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.float-btn-top.show {
  opacity: 1;
  visibility: visible;
}

.float-btn-top:hover {
  transform: translateY(-3px);
  background: var(--color-accent-teal);
}

/* ==========================================================================
   MOBILE SLIDE-IN NAVIGATION DRAWER STYLES
   ========================================================================== */
.mobile-drawer {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-drawer.active {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-inner {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  width: min(85vw, 320px);
  background: #ffffff;
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 25px rgba(0, 0, 0, 0.25);
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

body[dir="ltr"] .mobile-drawer-inner {
  right: auto;
  left: 0;
  box-shadow: 4px 0 25px rgba(0, 0, 0, 0.25);
  transform: translateX(-100%);
}

.mobile-drawer.active .mobile-drawer-inner {
  transform: translateX(0);
}

.mobile-drawer-link {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary);
  background: transparent;
  transition: all var(--transition-fast);
}

.mobile-drawer-link:hover,
.mobile-drawer-link:active {
  background: var(--bg-surface-tint);
  color: var(--color-accent-teal);
  transform: translateX(-4px);
}

body[dir="ltr"] .mobile-drawer-link:hover,
body[dir="ltr"] .mobile-drawer-link:active {
  transform: translateX(4px);
}

/* ==========================================================================
   COMPREHENSIVE RESPONSIVE DESIGN SYSTEM
   ========================================================================== */

/* 1. Large Laptops / Compact Desktops (<= 1240px) */
@media (max-width: 1240px) {
  .top-bar-inner,
  body[dir="ltr"] .top-bar-inner,
  .header-inner,
  body[dir="ltr"] .header-inner {
    transform: none;
    padding-left: 0;
    padding-right: 0;
  }

  .nav-link {
    padding: 6px 7px;
    font-size: 0.8rem;
  }

  .btn-search-trigger span {
    display: none;
  }

  .btn-search-trigger {
    padding: 8px 10px;
  }
}

/* 2. Transition to Mobile Navigation (<= 1220px) */
@media (max-width: 1220px) {
  .main-nav {
    display: none;
  }

  .burger-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--bg-surface-alt);
    border: 1px solid var(--border-subtle);
    color: var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
  }

  .burger-btn:hover {
    background: var(--bg-surface-tint);
    border-color: var(--color-accent-teal);
    color: var(--color-accent-teal);
  }
}

/* 3. Tablets Landscape & Portrait (<= 1024px) */
@media (max-width: 1024px) {
  :root {
    --container-max: 100%;
  }

  .hero-metrics-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .quality-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .modal-top-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .modal-image-box {
    max-width: 320px;
    margin: 0 auto;
  }

  .calc-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .transit-card {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .rfq-form-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

/* 4. Large Mobiles & Tablets Portrait (<= 768px) */
@media (max-width: 768px) {
  :root {
    --header-height: 66px;
    --topbar-height: auto;
  }

  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  /* Top Bar Mobile Optimization */
  .top-bar {
    padding: 7px 0;
  }

  .top-bar-inner {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
  }

  .top-contacts {
    gap: 10px;
  }

  /* Hide lengthy address and email in top bar on mobile to keep 1 single clean row */
  .top-contact-item:nth-child(2),
  .top-contact-item:nth-child(3) {
    display: none;
  }

  .iso-pill {
    display: none;
  }

  .lang-switch-btn {
    padding: 4px 10px;
    font-size: 0.75rem;
  }

  /* Header Mobile Optimization */
  .site-header {
    padding: 0;
  }

  .header-inner {
    padding-left: 14px;
    padding-right: 14px;
  }

  .brand {
    gap: 8px;
  }

  .brand-logo-img {
    height: 38px;
  }

  .brand-titles {
    padding-right: 8px;
    border-right-width: 1.5px;
  }

  body[dir="ltr"] .brand-titles {
    padding-left: 8px;
    border-left-width: 1.5px;
  }

  .brand-name-ar {
    font-size: 0.98rem;
  }

  .brand-name-en {
    font-size: 0.62rem;
  }

  .header-actions {
    gap: 6px;
  }

  .btn-search-trigger {
    width: 36px;
    height: 36px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
  }

  .btn-quote-header {
    padding: 7px 12px;
    font-size: 0.8rem;
    gap: 6px;
  }

  .burger-btn {
    width: 36px;
    height: 36px;
    padding: 6px;
  }

  /* Hero Section */
  .hero-section {
    padding: 40px 0 50px;
  }

  .hero-kicker {
    font-size: 0.78rem;
    padding: 5px 12px;
    margin-bottom: 16px;
  }

  .hero-title {
    font-size: clamp(1.65rem, 5.8vw, 2.4rem);
    line-height: 1.25;
    margin-bottom: 24px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
    margin-bottom: 30px;
  }

  .hero-cta-group .btn-primary,
  .hero-cta-group .btn-outline-white {
    width: 100%;
    justify-content: center;
    padding: 13px 20px;
    font-size: 0.95rem;
  }

  /* Quick Sectors Horizontal Scroll */
  .hero-sector-pills {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 8px;
    padding-bottom: 6px;
    margin-bottom: 24px;
  }

  .hero-sector-pills::-webkit-scrollbar {
    display: none;
  }

  .hero-sector-pills span {
    display: none;
  }

  .sector-pill {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 0.8rem;
    padding: 7px 14px;
  }

  /* Hero Metrics in Balanced 2x2 Grid */
  .hero-metrics-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
  }

  .metric-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 12px;
    align-items: center;
    gap: 10px;
  }

  .metric-icon-wrap {
    width: 36px;
    height: 36px;
  }

  .metric-icon-wrap svg {
    width: 18px;
    height: 18px;
  }

  .metric-num {
    font-size: 1.35rem;
  }

  .metric-label {
    font-size: 0.72rem;
    line-height: 1.25;
  }

  /* The 48-Hour Promise Banner */
  .promise-strip {
    padding: 14px 0;
    font-size: 0.875rem;
  }

  .promise-inner {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }

  .promise-badge {
    justify-content: center;
    text-align: center;
    line-height: 1.45;
  }

  .promise-fleet-link {
    width: auto;
    font-size: 0.8rem;
  }

  /* Catalog Controls & Filter Tabs */
  .catalog-section {
    padding: 50px 0;
  }

  .section-head {
    margin-bottom: 28px;
  }

  .catalog-controls {
    padding: 16px;
    border-radius: var(--radius-lg);
  }

  .filter-categories-row {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .cat-tabs {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 6px;
    padding-bottom: 6px;
  }

  .cat-tabs::-webkit-scrollbar {
    display: none;
  }

  .cat-tab-btn {
    flex-shrink: 0;
    white-space: nowrap;
    padding: 7px 14px;
    font-size: 0.8rem;
  }

  .view-controls {
    justify-content: flex-end;
  }

  /* Product Groups Shelves Mobile */
  .products-groups-container {
    gap: 36px;
  }

  .product-group-header {
    margin-bottom: 12px;
    gap: 10px;
  }

  .product-group-icon {
    width: 42px;
    height: 42px;
    font-size: 1.4rem;
  }

  .product-group-title {
    font-size: 1.15rem;
  }

  .product-group-subtitle {
    font-size: 0.78rem;
  }

  .group-nav-btn {
    width: 34px;
    height: 34px;
  }

  .group-nav-btn svg {
    width: 15px;
    height: 15px;
  }

  .product-group-carousel {
    gap: 14px;
    padding-bottom: 14px;
  }

  .product-group-carousel .product-card {
    flex: 0 0 clamp(260px, 78vw, 300px);
    width: clamp(260px, 78vw, 300px);
  }

  /* Product Grid */
  .products-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .product-card-thumb-wrap {
    height: 200px;
  }

  .product-card-body {
    padding: 18px 16px;
  }

  /* Modal Technical Dossier */
  .modal-overlay {
    padding: 10px;
  }

  .modal-container {
    width: 100%;
    max-height: 94vh;
    border-radius: var(--radius-lg);
  }

  .modal-header {
    padding: 12px 16px;
  }

  .modal-body {
    padding: 16px;
    gap: 16px;
  }

  .modal-top-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .modal-image-box {
    max-width: 240px;
    padding: 10px;
  }

  .modal-main-img {
    max-height: 180px;
  }

  .modal-product-title-ar {
    font-size: 1.25rem;
  }

  .modal-product-title-en {
    font-size: 0.85rem;
  }

  .modal-tabs {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 12px;
    padding-bottom: 4px;
    border-bottom: 2px solid var(--border-subtle);
  }

  .modal-tabs::-webkit-scrollbar {
    display: none;
  }

  .modal-tab-btn {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 0.825rem;
    padding: 6px 2px;
  }

  .tds-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 0.8rem;
  }

  .modal-footer {
    padding: 14px 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .modal-footer-left {
    justify-content: center;
    width: 100%;
  }

  .modal-footer div[style*="display: flex; gap: 10px;"] {
    flex-direction: column;
    width: 100%;
  }

  .btn-card-tds,
  .btn-whatsapp-rfq {
    width: 100%;
    justify-content: center;
  }

  /* Calculator Section */
  .calculator-section {
    padding: 50px 0;
  }

  .calc-card {
    padding: 20px 16px;
  }

  .calc-selector-tabs {
    flex-direction: column;
    gap: 6px;
  }

  .calc-type-btn {
    width: 100%;
    padding: 9px 12px;
    font-size: 0.825rem;
  }

  .calc-result-box {
    padding: 16px;
  }

  .calc-result-val {
    font-size: 1.7rem;
  }

  /* Logistics Section */
  .logistics-section {
    padding: 50px 0;
  }

  .transit-card {
    padding: 18px 16px;
  }

  .transit-result-card {
    padding: 20px 16px;
  }

  .transit-time-num {
    font-size: 2.2rem;
  }

  /* Industries & Quality Sections */
  .industries-section,
  .quality-section,
  .rfq-section {
    padding: 50px 0;
  }

  .industries-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .industry-card {
    padding: 20px 16px;
  }

  .quality-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .cert-card {
    padding: 20px 16px;
  }

  /* RFQ Section */
  .rfq-card {
    padding: 24px 16px;
  }

  .rfq-form-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* Footer */
  .site-footer {
    padding: 50px 0 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  /* Floating Buttons */
  .floating-actions {
    bottom: 18px;
    left: 16px;
    gap: 10px;
  }

  body[dir="ltr"] .floating-actions {
    left: auto;
    right: 16px;
  }

  .float-btn {
    width: 46px;
    height: 46px;
  }

  .float-btn svg {
    width: 24px;
    height: 24px;
  }
}

/* 5. Extra Small Mobiles (<= 400px - e.g. iPhone SE, Galaxy A) */
@media (max-width: 400px) {
  .container {
    padding-left: 12px;
    padding-right: 12px;
  }

  .header-inner {
    padding-left: 8px;
    padding-right: 8px;
  }

  .brand-logo-img {
    height: 34px;
  }

  .brand-name-ar {
    font-size: 0.9rem;
  }

  .brand-name-en {
    font-size: 0.58rem;
  }

  .btn-quote-header span {
    display: none; /* Icon-only quote button on narrowest screens to guarantee zero cut-off */
  }

  .btn-quote-header {
    width: 36px;
    height: 36px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
  }

  .hero-metrics-bar {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .metric-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 10px;
  }

  .metric-num {
    font-size: 1.25rem;
  }
}