/**
 * Crystal Electronics - Main Stylesheet
 * Hybrid Visual System: Dark Technical Hero + Clean Light Industrial Body
 */

/* ==========================================================================
   1. Self-Hosted Typography
   ========================================================================== */

/* Persian Font: Vazirmatn */
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/vazirmatn/Vazirmatn-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/vazirmatn/Vazirmatn-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/vazirmatn/Vazirmatn-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/vazirmatn/Vazirmatn-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* English Font: Inter */
@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter/Inter-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter/Inter-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter/Inter-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter/Inter-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ==========================================================================
   2. Design Tokens & CSS Variables
   ========================================================================== */
:root {
  /* Brand & Dark Technical Colors */
  --cets-navy-dark: #0B1120;
  --cets-navy-elevated: #111A2E;
  --cets-navy-surface: #1E293B;
  --cets-navy-border: #334155;
  
  /* Technical Blues & Teals */
  --cets-blue-tech: #1E40AF;
  --cets-blue-bright: #3B82F6;
  --cets-cyan-accent: #0EA5E9;
  --cets-teal-accent: #0D9488;
  --cets-cyan-glow: rgba(14, 165, 233, 0.25);
  
  /* Conversion Action */
  --cets-whatsapp: #25D366;
  --cets-whatsapp-hover: #1EBE5D;
  --cets-whatsapp-glow: rgba(37, 211, 102, 0.35);

  /* Clean Light Industrial Theme */
  --cets-bg-light: #F8FAFC;
  --cets-surface-white: #FFFFFF;
  --cets-border-subtle: #E2E8F0;
  --cets-border-light: #CBD5E1;
  
  /* Typography Colors */
  --cets-text-main: #0F172A;
  --cets-text-muted: #475569;
  --cets-text-subtle: #64748B;
  --cets-text-on-dark: #F8FAFC;
  --cets-text-muted-dark: #94A3B8;

  /* Layout & Spacing */
  --cets-header-height: 76px;
  --cets-radius-sm: 6px;
  --cets-radius-md: 10px;
  --cets-radius-lg: 16px;
  --cets-radius-xl: 24px;
  --cets-transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --cets-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --cets-shadow-md: 0 4px 16px -2px rgba(15, 23, 42, 0.08);
  --cets-shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
  --cets-shadow-dark: 0 20px 40px rgba(0, 0, 0, 0.45);
}

/* ==========================================================================
   3. Global Reset & Base Elements
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--cets-header-height) + 20px);
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--cets-bg-light);
  color: var(--cets-text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.modal-open,
body.nav-open {
  overflow: hidden;
}

a {
  color: var(--cets-blue-tech);
  text-decoration: none;
  transition: var(--cets-transition);
}

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

/* Accessibility: High-contrast keyboard focus outlines */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--cets-cyan-accent) !important;
  outline-offset: 3px !important;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container constraints */
.container-custom {
  width: 100%;
  max-width: 1260px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ==========================================================================
   4. Header & Navigation Bar
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--cets-header-height);
  z-index: 1020;
  background-color: rgba(11, 17, 32, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--cets-transition);
}

.site-header.header-scrolled {
  background-color: rgba(11, 17, 32, 0.96);
  border-bottom-color: rgba(14, 165, 233, 0.2);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  height: 44px;
  width: auto;
}

.nav-desktop-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-desktop-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--cets-text-muted-dark);
  padding: 8px 12px;
  border-radius: var(--cets-radius-sm);
  transition: var(--cets-transition);
}

.nav-desktop-link:hover,
.nav-desktop-link:focus {
  color: #FFFFFF;
  background-color: rgba(255, 255, 255, 0.06);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #FFFFFF;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  transition: var(--cets-transition);
}

.lang-switch-btn:hover {
  background-color: rgba(255, 255, 255, 0.18);
  border-color: var(--cets-cyan-accent);
  color: #FFFFFF;
}

.header-wa-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #FFFFFF;
  background-color: var(--cets-whatsapp);
  border-radius: var(--cets-radius-md);
  box-shadow: 0 2px 10px var(--cets-whatsapp-glow);
  transition: var(--cets-transition);
}

.header-wa-btn:hover {
  background-color: var(--cets-whatsapp-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--cets-whatsapp-glow);
}

/* Mobile Toggle Hamburger */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  color: #FFFFFF;
  cursor: pointer;
}

/* ==========================================================================
   5. Mobile Navigation Drawer
   ========================================================================== */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: var(--cets-transition);
}

.mobile-nav-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 290px;
  max-width: 85vw;
  background-color: var(--cets-navy-dark);
  z-index: 1050;
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--cets-shadow-dark);
  transition: transform 0.3s ease-in-out;
}

/* In LTR (English), drawer slides from left */
html[dir="ltr"] .mobile-nav-drawer {
  left: 0;
  transform: translateX(-100%);
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
html[dir="ltr"] .mobile-nav-drawer.is-open {
  transform: translateX(0);
}

/* In RTL (Persian), drawer slides from right */
html[dir="rtl"] .mobile-nav-drawer {
  right: 0;
  transform: translateX(100%);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}
html[dir="rtl"] .mobile-nav-drawer.is-open {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 24px;
}

.mobile-nav-close {
  background: none;
  border: none;
  color: var(--cets-text-muted-dark);
  padding: 6px;
  cursor: pointer;
  border-radius: var(--cets-radius-sm);
}

.mobile-nav-close:hover {
  color: #FFFFFF;
}

.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-link {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--cets-text-on-dark);
  display: block;
  padding: 10px 12px;
  border-radius: var(--cets-radius-sm);
}

.mobile-nav-link:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--cets-cyan-accent);
}

.mobile-nav-footer {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ==========================================================================
   6. Hero Section (Dark Technical Theme)
   ========================================================================== */
.hero-section {
  position: relative;
  background-color: var(--cets-navy-dark);
  color: #FFFFFF;
  padding-top: calc(var(--cets-header-height) + 40px);
  padding-bottom: 70px;
  overflow: hidden;
  border-bottom: 1px solid rgba(14, 165, 233, 0.2);
}

/* Subtle PCB circuit grid pattern */
.hero-pattern-bg {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 1px 1px, rgba(14, 165, 233, 0.12) 1px, transparent 0),
    linear-gradient(to right, rgba(14, 165, 233, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(14, 165, 233, 0.04) 1px, transparent 1px);
  background-size: 32px 32px, 64px 64px, 64px 64px;
  opacity: 0.85;
  pointer-events: none;
}

.hero-glow-blob {
  position: absolute;
  top: 15%;
  right: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.16) 0%, rgba(30, 64, 175, 0.08) 50%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.35);
  color: #38BDF8;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 6px 14px;
  border-radius: 9999px;
  margin-bottom: 20px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background-color: #38BDF8;
  border-radius: 50%;
  box-shadow: 0 0 10px #38BDF8;
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  font-size: clamp(2.1rem, 4.2vw, 3.25rem);
  font-weight: 800;
  line-height: 1.25;
  color: #FFFFFF;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-title-accent {
  background: linear-gradient(135deg, #38BDF8 0%, #2DD4BF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: clamp(1.05rem, 1.8vw, 1.15rem);
  color: var(--cets-text-muted-dark);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.btn-primary-wa {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: var(--cets-whatsapp);
  color: #FFFFFF;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--cets-radius-md);
  box-shadow: 0 4px 20px var(--cets-whatsapp-glow);
  transition: var(--cets-transition);
  text-decoration: none;
}

.btn-primary-wa:hover {
  background-color: var(--cets-whatsapp-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--cets-whatsapp-glow);
}

.btn-ghost-tech {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 14px 24px;
  border-radius: var(--cets-radius-md);
  transition: var(--cets-transition);
  text-decoration: none;
}

.btn-ghost-tech:hover {
  background-color: rgba(255, 255, 255, 0.14);
  border-color: #38BDF8;
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* Hero Trust Strip */
.hero-trust-strip {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--cets-text-muted-dark);
}

.trust-item-icon {
  color: #38BDF8;
  flex-shrink: 0;
}

/* Hero Visual Showcase with Reticle Frame */
.hero-visual-frame {
  position: relative;
  border-radius: var(--cets-radius-lg);
  padding: 10px;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.3) 0%, rgba(30, 64, 175, 0.2) 100%);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 40px rgba(14, 165, 233, 0.15);
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--cets-radius-md);
  overflow: hidden;
  background-color: #000000;
}

.hero-main-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.hero-visual-frame:hover .hero-main-img {
  transform: scale(1.03);
}

/* Technical Reticle Overlay */
.reticle-corner {
  position: absolute;
  width: 24px;
  height: 24px;
  border-color: #38BDF8;
  border-style: solid;
  pointer-events: none;
  z-index: 3;
}

.corner-tl { top: 18px; left: 18px; border-width: 2px 0 0 2px; }
.corner-tr { top: 18px; right: 18px; border-width: 2px 2px 0 0; }
.corner-bl { bottom: 18px; left: 18px; border-width: 0 0 2px 2px; }
.corner-br { bottom: 18px; right: 18px; border-width: 0 2px 2px 0; }

.hero-reticle-status {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  background: rgba(11, 17, 32, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: var(--cets-radius-sm);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 3;
}

.status-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #E2E8F0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-metric {
  font-family: ui-monospace, SFMono-Regular, "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: #38BDF8;
  background: rgba(14, 165, 233, 0.15);
  padding: 2px 8px;
  border-radius: 4px;
}

/* ==========================================================================
   7. Section Headers & Light Industrial Components
   ========================================================================== */
.section-py {
  padding-top: 80px;
  padding-bottom: 80px;
}

.section-bg-white {
  background-color: var(--cets-surface-white);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 56px;
}

.section-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--cets-blue-tech);
  background-color: rgba(30, 64, 175, 0.08);
  padding: 4px 12px;
  border-radius: 9999px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 3.2vw, 2.35rem);
  font-weight: 800;
  color: var(--cets-text-main);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--cets-text-muted);
  line-height: 1.7;
  margin: 0;
}

/* ==========================================================================
   8. Services Section Cards
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 28px;
}

.service-card {
  background-color: var(--cets-surface-white);
  border: 1px solid var(--cets-border-subtle);
  border-radius: var(--cets-radius-lg);
  padding: 32px 28px;
  transition: var(--cets-transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--cets-blue-bright);
  box-shadow: var(--cets-shadow-lg);
}

.service-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--cets-radius-md);
  background-color: rgba(14, 165, 233, 0.1);
  color: var(--cets-blue-tech);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: var(--cets-transition);
}

.service-card:hover .service-icon-box {
  background-color: var(--cets-blue-tech);
  color: #FFFFFF;
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cets-text-main);
  margin-bottom: 14px;
}

.service-text {
  font-size: 0.95rem;
  color: var(--cets-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.service-features-list {
  list-style: none;
  margin: 0 0 24px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-feature-item {
  font-size: 0.875rem;
  color: var(--cets-text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-feature-item svg {
  color: var(--cets-teal-accent);
  flex-shrink: 0;
}

/* ==========================================================================
   9. Capabilities & Workshop Equipment
   ========================================================================== */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.capability-card {
  background-color: var(--cets-surface-white);
  border: 1px solid var(--cets-border-subtle);
  border-radius: var(--cets-radius-lg);
  overflow: hidden;
  box-shadow: var(--cets-shadow-sm);
  transition: var(--cets-transition);
}

.capability-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--cets-shadow-md);
  border-color: var(--cets-border-light);
}

.capability-media {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.capability-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.capability-body {
  padding: 24px;
}

.capability-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--cets-text-main);
}

.capability-desc {
  font-size: 0.925rem;
  color: var(--cets-text-muted);
  line-height: 1.65;
  margin: 0;
}

/* ==========================================================================
   10. Workflow Section (4-Step Sequential)
   ========================================================================== */
.workflow-steps-wrapper {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.workflow-step-card {
  background-color: var(--cets-surface-white);
  border: 1px solid var(--cets-border-subtle);
  border-radius: var(--cets-radius-lg);
  padding: 32px 24px;
  position: relative;
  transition: var(--cets-transition);
}

.workflow-step-card:hover {
  border-color: var(--cets-blue-tech);
  box-shadow: var(--cets-shadow-md);
}

.workflow-step-num {
  font-family: ui-monospace, SFMono-Regular, "JetBrains Mono", monospace;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--cets-blue-tech);
  background-color: rgba(30, 64, 175, 0.08);
  width: 48px;
  height: 48px;
  border-radius: var(--cets-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.workflow-step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--cets-text-main);
  margin-bottom: 12px;
}

.workflow-step-desc {
  font-size: 0.9rem;
  color: var(--cets-text-muted);
  line-height: 1.65;
  margin: 0;
}

/* ==========================================================================
   11. About The Workshop Section
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-content-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-lead {
  font-size: 1.125rem;
  color: var(--cets-text-main);
  font-weight: 600;
  line-height: 1.8;
}

.about-text {
  font-size: 0.975rem;
  color: var(--cets-text-muted);
  line-height: 1.8;
}

.about-values-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 10px;
}

.about-val-box {
  background-color: var(--cets-bg-light);
  border: 1px solid var(--cets-border-subtle);
  border-radius: var(--cets-radius-md);
  padding: 18px;
}

.about-val-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--cets-blue-tech);
  margin-bottom: 6px;
}

.about-val-desc {
  font-size: 0.85rem;
  color: var(--cets-text-muted);
  line-height: 1.5;
  margin: 0;
}

.about-visual-card {
  position: relative;
  border-radius: var(--cets-radius-xl);
  overflow: hidden;
  box-shadow: var(--cets-shadow-lg);
  border: 1px solid var(--cets-border-subtle);
}

.about-visual-img {
  width: 100%;
  height: 440px;
  object-fit: cover;
}

/* ==========================================================================
   12. Final WhatsApp CTA Banner & Footer
   ========================================================================== */
.final-cta-section {
  background-color: var(--cets-navy-dark);
  color: #FFFFFF;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.final-cta-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.7) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: var(--cets-radius-xl);
  padding: 60px 48px;
  text-align: center;
  position: relative;
  box-shadow: var(--cets-shadow-dark);
}

.final-cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  color: #FFFFFF;
}

.final-cta-subtitle {
  font-size: 1.1rem;
  color: var(--cets-text-muted-dark);
  max-width: 640px;
  margin: 0 auto 36px auto;
  line-height: 1.7;
}

.footer-section {
  background-color: #070B14;
  color: var(--cets-text-muted-dark);
  padding: 60px 0 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--cets-text-muted-dark);
  max-width: 380px;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 20px;
}

.footer-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-item {
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--cets-text-muted-dark);
}

.footer-contact-item svg {
  color: #38BDF8;
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-bottom-bar {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}

/* ==========================================================================
   13. Floating WhatsApp Button
   ========================================================================== */
.floating-wa-btn {
  position: fixed;
  bottom: 28px;
  z-index: 1010;
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--cets-whatsapp);
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: 9999px;
  box-shadow: 0 4px 20px var(--cets-whatsapp-glow);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--cets-transition);
}

/* LTR layout placement */
html[dir="ltr"] .floating-wa-btn {
  right: 28px;
}
/* RTL layout placement */
html[dir="rtl"] .floating-wa-btn {
  left: 28px;
}

.floating-wa-btn:hover {
  background-color: var(--cets-whatsapp-hover);
  color: #FFFFFF;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px var(--cets-whatsapp-glow);
}

.floating-wa-pulse {
  position: absolute;
  inset: 0;
  border-radius: 9999px;
  background-color: var(--cets-whatsapp);
  opacity: 0.5;
  animation: wa-beacon 2.4s infinite cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: -1;
}

@keyframes wa-beacon {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.35); opacity: 0; }
}

/* ==========================================================================
   14. Responsive Layout Breakpoints
   ========================================================================== */

/* 1024px and below (Tablets & small laptops) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual-col {
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
  }
  .hero-main-img {
    height: 340px;
  }
  .workflow-steps-wrapper {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* 768px and below (Mobile / Small Tablets) */
@media (max-width: 768px) {
  .nav-desktop-menu {
    display: none;
  }
  .mobile-nav-toggle {
    display: block;
  }
  .header-wa-btn {
    display: none; /* Prominent floating button handles mobile */
  }
  .section-py {
    padding-top: 56px;
    padding-bottom: 56px;
  }
  .workflow-steps-wrapper {
    grid-template-columns: 1fr;
  }
  .about-values-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .final-cta-card {
    padding: 40px 24px;
  }
  .hero-trust-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .floating-wa-btn {
    bottom: 20px;
    padding: 10px 16px;
    font-size: 0.875rem;
  }
  html[dir="ltr"] .floating-wa-btn { right: 16px; }
  html[dir="rtl"] .floating-wa-btn { left: 16px; }
}

/* 430px and below (Small Mobiles) */
@media (max-width: 430px) {
  .hero-main-img {
    height: 250px;
  }
  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-cta-group .btn-primary-wa,
  .hero-cta-group .btn-ghost-tech {
    width: 100%;
  }
  .hero-reticle-status {
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
  }
}

/* ==============================================================================
   Subtle Scroll Reveal Class - Safe Default (Never Hide Content)
   ============================================================================== */
.reveal-on-scroll {
  opacity: 1 !important;
  transform: none !important;
  visibility: visible !important;
}

/* ==============================================================================
   Notice Banners & Future Update References
   ============================================================================== */
.update-notice-banner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(14, 165, 233, 0.06);
  border: 1px dashed rgba(14, 165, 233, 0.35);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-top: 24px;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-slate-600);
}

.update-notice-banner.dark-theme {
  background: rgba(30, 41, 59, 0.6);
  border-color: rgba(56, 189, 248, 0.3);
  color: var(--color-slate-300);
}

.update-notice-icon {
  flex-shrink: 0;
  color: var(--color-cyan-500);
  margin-top: 2px;
}

.update-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  background: rgba(245, 158, 11, 0.12);
  color: #B45309;
  border: 1px solid rgba(245, 158, 11, 0.3);
  margin-bottom: 12px;
}

.update-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #F59E0B;
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Technical Specification Grid */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 32px;
}

.spec-item-card {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.spec-item-card:hover {
  border-color: var(--color-cyan-500);
  transform: translateY(-2px);
}

.spec-label {
  font-size: 0.8125rem;
  color: var(--color-slate-500);
  font-weight: 500;
  margin-bottom: 6px;
}

.spec-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy-950);
  margin-bottom: 4px;
}

.spec-hint {
  font-size: 0.75rem;
  color: var(--color-slate-400);
}

/* FAQ Accordion / Cards */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.faq-card {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-fast);
}

.faq-card:hover {
  border-color: var(--color-cyan-500);
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy-950);
  margin-bottom: 12px;
}

.faq-q-icon {
  flex-shrink: 0;
  color: var(--color-cyan-600);
}

.faq-answer {
  font-size: 0.9125rem;
  line-height: 1.7;
  color: var(--color-slate-600);
}

@media (max-width: 991.98px) {
  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575.98px) {
  .specs-grid {
    grid-template-columns: 1fr;
  }
}