@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ==========================================================================
   MTI AI SOLUTIONS — PRODUCTION MASTER DESIGN SYSTEM
   Brand Direction: Clean, Chic, Elegant, Premium White / Off-White Aesthetic
   Palette: White #FFFFFF | Off-White #F8FAFC | Charcoal #0F172A | MTI Blue #1E6FD9 | Gold #C8922A
   ========================================================================== */

:root {
  --font-ar: 'Cairo', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Tahoma, sans-serif;
  /* Surface & Background */
  --bg-body: #FFFFFF;
  --bg-subtle: #F8FAFC;
  --bg-surface: #F1F5F9;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FFFFFF;
  --bg-dark: #0F172A;
  --bg-dark-surface: #1E293B;

  /* Borders & Dividers */
  --border-subtle: #E2E8F0;
  --border-card: #E2E8F0;
  --border-hover: #CBD5E1;
  --border-blue: rgba(30, 111, 217, 0.35);

  /* Typography Colors */
  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;
  --text-dim: #94A3B8;
  --text-on-dark: #FFFFFF;
  --text-on-dark-muted: #94A3B8;

  /* Brand Accents */
  --blue-primary: #1E6FD9;
  --blue-hover: #175BB3;
  --blue-subtle: #EFF6FF;
  --blue-border: #BFDBFE;

  --gold-accent: #C8922A;
  --gold-hover: #B28022;
  --gold-subtle: #FEFCE8;
  --gold-border: #FEF08A;

  --cyan-accent: #0284C7;
  --cyan-subtle: #F0F9FF;

  --success-text: #166534;
  --success-bg: #F0FDF4;
  --success-border: #BBF7D0;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  /* Elevation & Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 4px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 6px 12px -2px rgba(15, 23, 42, 0.06), 0 3px 6px -3px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.08), 0 4px 8px -4px rgba(15, 23, 42, 0.04);
  --shadow-card-hover: 0 16px 32px -4px rgba(15, 23, 42, 0.1), 0 6px 12px -4px rgba(15, 23, 42, 0.06);

  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;

  /* Container */
  --container-max: 1240px;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 15px;
}

img, svg {
  vertical-align: middle;
  display: inline-block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-subtle);
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

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

/* Engineering Blueprint Grid Background */
.bg-grid {
  background-image: 
    linear-gradient(to right, rgba(226, 232, 240, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(226, 232, 240, 0.6) 1px, transparent 1px);
  background-size: 28px 28px;
}

.bg-dots {
  background-image: radial-gradient(rgba(203, 213, 225, 0.7) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* Section Padding */
.section-py {
  padding-top: 88px;
  padding-bottom: 88px;
}
.section-py-sm {
  padding-top: 56px;
  padding-bottom: 56px;
}

/* Typography Helpers */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--blue-primary);
  margin-bottom: 12px;
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 2px;
  background: var(--blue-primary);
}
.eyebrow-gold {
  color: var(--gold-accent);
}
.eyebrow-gold::before {
  background: var(--gold-accent);
}

.h1-hero {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.h2-section {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.lead-p {
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 680px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--blue-primary);
  color: #FFFFFF;
  border-color: var(--blue-primary);
  box-shadow: 0 2px 4px rgba(30, 111, 217, 0.2);
}
.btn-primary:hover {
  background: var(--blue-hover);
  border-color: var(--blue-hover);
  box-shadow: 0 4px 8px rgba(30, 111, 217, 0.28);
  transform: translateY(-1px);
}
.btn-secondary {
  background: #FFFFFF;
  color: var(--text-primary);
  border-color: var(--border-card);
  box-shadow: var(--shadow-xs);
}
.btn-secondary:hover {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}
.btn-dark {
  background: var(--bg-dark);
  color: #FFFFFF;
  border-color: var(--bg-dark);
}
.btn-dark:hover {
  background: #1E293B;
  transform: translateY(-1px);
}
.btn-gold {
  background: var(--gold-accent);
  color: #FFFFFF;
  border-color: var(--gold-accent);
}
.btn-gold:hover {
  background: var(--gold-hover);
  transform: translateY(-1px);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.84rem;
}
.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

/* Badges & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.badge-flagship {
  background: #EFF6FF;
  color: #1E40AF;
  border: 1px solid #BFDBFE;
}
.badge-supporting {
  background: #F8FAFC;
  color: #334155;
  border: 1px solid #CBD5E1;
}
.badge-emerging {
  background: #FEFCE8;
  color: #854D0E;
  border: 1px solid #FEF08A;
}
.badge-status {
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.card-featured {
  border-top: 3px solid var(--blue-primary);
}
.card-gold {
  border-top: 3px solid var(--gold-accent);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.25s ease;
}
.site-header.scrolled {
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
}

.top-bar-strip {
  height: 3px;
  background: linear-gradient(90deg, #C8922A 0%, #1E6FD9 50%, #0284C7 100%);
}

.top-utility-bar {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 12px;
  padding: 6px 0;
  color: var(--text-muted);
}
.top-utility-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-utility-links {
  display: flex;
  gap: 20px;
}
.top-utility-links a:hover {
  color: var(--blue-primary);
}

.nav-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

/* Brand Logo */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-name {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  line-height: 1.15;
}
.brand-sub {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

/* Desktop Navigation */
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-item {
  position: relative;
}
.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link:hover, .nav-link.active {
  color: var(--blue-primary);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -12px;
  width: 280px;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  display: none;
  z-index: 1010;
}
.nav-item:hover .dropdown-menu {
  display: block;
}
.dropdown-item {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-xs);
  transition: background 0.15s ease;
}
.dropdown-item:hover {
  background: var(--bg-subtle);
}
.dropdown-item-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.dropdown-item-desc {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.35;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 75px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #FFFFFF;
  padding: 24px;
  overflow-y: auto;
  z-index: 999;
  border-top: 1px solid var(--border-subtle);
}
.mobile-drawer.open {
  display: block;
}
.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}
.mobile-nav-link {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
}

/* ==========================================================================
   PAGE HERO SECTIONS
   ========================================================================== */
.hero-wrapper {
  padding-top: 152px;
  padding-bottom: 84px;
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  gap: 56px;
  align-items: center;
}

/* Technical Blueprint Graphic Container */
.blueprint-box {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.blueprint-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}
.blueprint-status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--blue-primary);
}
.blueprint-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue-primary);
  box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.2);
}

/* ==========================================================================
   FEATURE GRIDS & SECTIONS
   ========================================================================== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* Operational Reality Problem Box */
.problem-card {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-left: 4px solid var(--text-primary);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-xs);
}
.problem-card-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Solution 10-Point Spec Engine Components */
.spec-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 16px;
}
.spec-item {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 13.5px;
}
.spec-item:last-child {
  margin-bottom: 0;
}
.spec-key {
  font-weight: 700;
  color: var(--text-primary);
  min-width: 140px;
}
.spec-val {
  color: var(--text-secondary);
}

/* Process Timeline */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process-card {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
}
.process-num {
  font-size: 28px;
  font-weight: 900;
  color: var(--border-hover);
  margin-bottom: 12px;
  font-family: var(--font-mono);
}
.process-card-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.process-duration {
  font-size: 12px;
  font-weight: 700;
  color: var(--blue-primary);
  text-transform: uppercase;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   CONTACT FORM & CONVERSION
   ========================================================================== */
.contact-section {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.form-box {
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 18px;
}
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.form-label span.req {
  color: #DC2626;
}
.form-control {
  width: 100%;
  padding: 11px 15px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--text-primary);
  background: #FFFFFF;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  outline: none;
  transition: all 0.2s ease;
}
.form-control:focus {
  border-color: var(--blue-primary);
  box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.15);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-alert-success {
  display: none;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
  padding: 24px;
  border-radius: var(--radius-md);
  text-align: center;
  margin-bottom: 20px;
}

/* Floating WhatsApp Quick Action */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 998;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #25D366;
  color: #FFFFFF;
  padding: 12px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 16px rgba(37, 211, 102, 0.35);
  font-weight: 700;
  font-size: 13.5px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.whatsapp-float:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.45);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding-top: 72px;
  position: relative;
}
.footer-top-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.85fr 0.85fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-heading {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #FFFFFF;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-on-dark-muted);
}
.footer-links a:hover {
  color: #FFFFFF;
}
.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-on-dark-muted);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .top-utility-bar {
    display: none;
  }
  .nav-links, .nav-action-btn {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .grid-3, .grid-2, .grid-4 {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .section-py {
    padding-top: 60px;
    padding-bottom: 60px;
  }
  .whatsapp-float span {
    display: none;
  }
  .whatsapp-float {
    padding: 12px;
    border-radius: 50%;
  }
}

/* ==========================================================================
   LANGUAGE SWITCHER & RTL STYLES
   ========================================================================== */
.lang-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 12.5px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  line-height: 1.2;
}

.lang-switch-btn:hover {
  background: #FFFFFF;
  border-color: var(--blue-primary);
  color: var(--blue-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.lang-switch-btn .lang-icon {
  font-size: 14px;
}

/* RTL Layout Mode */
[dir="rtl"] {
  direction: rtl;
  text-align: right;
}

[dir="rtl"] body,
[dir="rtl"] h1,
[dir="rtl"] h2,
[dir="rtl"] h3,
[dir="rtl"] h4,
[dir="rtl"] h5,
[dir="rtl"] h6,
[dir="rtl"] p,
[dir="rtl"] button,
[dir="rtl"] input,
[dir="rtl"] select,
[dir="rtl"] textarea,
[dir="rtl"] .btn,
[dir="rtl"] .nav-link {
  font-family: var(--font-ar);
}

[dir="rtl"] .top-utility-links {
  direction: rtl;
}

[dir="rtl"] .dropdown-menu {
  left: auto;
  right: 0;
  text-align: right;
}

[dir="rtl"] .eyebrow-dot {
  margin-right: 0;
  margin-left: 8px;
}

[dir="rtl"] .whatsapp-float {
  right: auto;
  left: 24px;
}

[dir="rtl"] .form-group label {
  text-align: right;
}

[dir="rtl"] .form-control {
  text-align: right;
  direction: rtl;
}

[dir="rtl"] .card,
[dir="rtl"] .feature-list,
[dir="rtl"] .footer-col {
  text-align: right;
}

[dir="rtl"] .desktop-nav .nav-links {
  padding-right: 0;
}

[dir="rtl"] .blueprint-box {
  direction: ltr; /* Technical CAD diagrams remain LTR */
}