/* ============================================================
   SENSORLINES — Premium Design System
   Version: 2.0 | Dark Mode Fiber Optic Theme
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* --- Preloader --- */
#preloader {
  position: fixed;
  inset: 0;
  background: var(--clr-bg-deep, #050d1a);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-logo {
  height: 56px;
  width: auto;
  animation: pulse-glow 1.5s ease-in-out infinite;
}

.preloader-bar {
  width: 200px;
  height: 2px;
  background: rgba(0, 212, 255, 0.15);
  border-radius: 2px;
  overflow: hidden;
}

.preloader-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #00d4ff, #00ffcc);
  border-radius: 2px;
  animation: preload-fill 1.2s ease forwards;
}

@keyframes preload-fill {
  to { width: 100%; }
}

@keyframes pulse-glow {
  0%, 100% { filter: brightness(1) drop-shadow(0 0 8px rgba(0,212,255,0.3)); }
  50%       { filter: brightness(1.2) drop-shadow(0 0 20px rgba(0,212,255,0.6)); }
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #030a10; }
::-webkit-scrollbar-thumb { background: rgba(0,212,255,0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,212,255,0.6); }

/* --- Text Selection --- */
::selection { background: rgba(0, 212, 255, 0.25); color: #e8f4f8; }
::-moz-selection { background: rgba(0, 212, 255, 0.25); color: #e8f4f8; }

/* --- Focus Styles (Accessibility) --- */
:focus-visible {
  outline: 2px solid var(--clr-cyan, #00d4ff);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--clr-cyan, #00d4ff);
  color: #050d1a;
  padding: 0.5rem 1rem;
  border-radius: 0 0 8px 8px;
  font-weight: 700;
  font-size: 0.875rem;
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus { top: 0; }

/* --- CSS Variables --- */
:root {
  /* Colors */
  --clr-bg-deep:       #050d1a;
  --clr-bg-dark:       rgba(7, 18, 36, 0.45);
  --clr-bg-card:       rgba(255, 255, 255, 0.03);
  --clr-bg-card-hover: rgba(0, 212, 255, 0.05);
  --clr-surface:       #0d1e35;
  --clr-surface-2:     #0f2540;

  --clr-cyan:          #00d4ff;
  --clr-cyan-dark:     #0099cc;
  --clr-teal:          #00ffcc;
  --clr-orange:        #ff6b2b;
  --clr-orange-light:  #ff8c4a;

  --clr-text-primary:  #e8f4f8;
  --clr-text-secondary:#8ab4d4;
  --clr-text-muted:    #4a7a9b;

  --clr-border:        rgba(0, 212, 255, 0.15);
  --clr-border-hover:  rgba(0, 212, 255, 0.4);
  --clr-glow:          rgba(0, 212, 255, 0.25);

  /* Typography */
  --font-main:   'Inter', sans-serif;
  --font-tech:   'Space Grotesk', sans-serif;

  /* Spacing */
  --space-xs:    0.5rem;
  --space-sm:    1rem;
  --space-md:    2rem;
  --space-lg:    4rem;
  --space-xl:    6rem;
  --space-xxl:   9rem;

  /* Border Radius */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   32px;

  /* Transitions */
  --trans-fast:  0.2s ease;
  --trans-med:   0.4s ease;
  --trans-slow:  0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Shadows */
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-deep: 0 20px 60px rgba(0, 0, 0, 0.6);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-main);
  background-color: #0b111e;
  background-image: 
    radial-gradient(circle at 10% 15%, rgba(0, 212, 255, 0.22) 0%, transparent 55%),
    radial-gradient(circle at 75% 15%, rgba(99, 102, 241, 0.2) 0%, transparent 60%),
    radial-gradient(circle at 50% 45%, rgba(139, 92, 246, 0.18) 0%, transparent 60%),
    radial-gradient(circle at 90% 85%, rgba(0, 255, 204, 0.16) 0%, transparent 55%);
  background-attachment: fixed;
  background-size: cover;
  color: var(--clr-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: -1;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- Utility Classes --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-tech);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-cyan);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.section-label::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--clr-cyan);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.4); }
}

.section-heading {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--clr-text-primary);
  margin-bottom: 1rem;
}

.section-heading span {
  background: linear-gradient(120deg, var(--clr-cyan), var(--clr-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subheading {
  font-size: 1.1rem;
  color: var(--clr-text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

.section-padding { padding: var(--space-xl) 0; }

.text-center { text-align: center; }
.text-center .section-subheading { margin: 0 auto; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--trans-med);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-cyan), var(--clr-teal));
  color: var(--clr-bg-deep);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--clr-teal), var(--clr-cyan));
  opacity: 0;
  transition: opacity var(--trans-med);
}

.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(0, 212, 255, 0.5);
}
.btn-primary > * { position: relative; z-index: 1; }

.btn-outline {
  border: 1px solid var(--clr-border-hover);
  color: var(--clr-cyan);
  background: transparent;
}

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--clr-cyan);
  transform: translateY(-2px);
}

.btn-orange {
  background: linear-gradient(135deg, var(--clr-orange), var(--clr-orange-light));
  color: #fff;
  box-shadow: 0 0 20px rgba(255, 107, 43, 0.3);
}

.btn-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(255, 107, 43, 0.5);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: all var(--trans-med);
}

.navbar.scrolled {
  background: rgba(5, 13, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  padding: 0.8rem 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.navbar-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.navbar-logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.1);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--trans-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--clr-cyan);
  background: rgba(0, 212, 255, 0.06);
}

.nav-link .chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--trans-fast);
}

.nav-item:hover .chevron { transform: rotate(180deg); }

/* ── Dropdown (small, for non-mega items) ── */
.dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  min-width: 220px;
  background: rgba(7, 18, 36, 0.98);
  backdrop-filter: blur(24px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--trans-med);
  box-shadow: var(--shadow-deep);
}

.nav-item:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ── MEGA MENU ── */
.mega-menu {
  position: fixed;
  top: var(--navbar-h, 72px);
  left: 0;
  width: 100%;
  background: rgba(5, 12, 24, 0.98);
  backdrop-filter: blur(28px);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  padding: 2rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  z-index: 998;
  pointer-events: none;
}

.nav-item:hover .mega-menu,
.nav-item:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.mega-menu-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}

.mega-col {
  padding: 0 1.5rem;
  border-right: 1px solid rgba(255,255,255,0.04);
}

.mega-col:first-child { padding-left: 0; }
.mega-col:last-child  { border-right: none; padding-right: 0; }

.mega-col-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.mega-col-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
}

.mega-col-header span {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  font-family: var(--font-tech);
}

.mega-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.5rem;
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--clr-text-secondary);
  transition: all 0.18s ease;
  line-height: 1.3;
}

.mega-link:hover {
  color: var(--clr-cyan);
  background: rgba(0, 212, 255, 0.07);
  padding-left: 0.85rem;
}

.mega-link::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--clr-border-hover);
  flex-shrink: 0;
  transition: background 0.18s ease;
}

.mega-link:hover::before {
  background: var(--clr-cyan);
}

.mega-footer {
  grid-column: 1 / -1;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.mega-footer-note {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
}

.mega-footer-note strong {
  color: var(--clr-cyan);
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--clr-text-secondary);
  transition: all var(--trans-fast);
}

.dropdown-link:hover {
  color: var(--clr-cyan);
  background: rgba(0, 212, 255, 0.08);
}

.dropdown-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 6px;
  flex-shrink: 0;
}

.dropdown-icon svg { width: 16px; height: 16px; color: var(--clr-cyan); }

.navbar-cta { margin-left: 1rem; }


/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text-primary);
  border-radius: 2px;
  transition: all var(--trans-med);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(5, 13, 26, 0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  padding: 6rem 2rem 2rem;
  flex-direction: column;
  gap: 0.5rem;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--trans-slow);
}

.mobile-menu.open {
  display: flex;
  transform: translateX(0);
}

.mobile-nav-link {
  padding: 1rem 1.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-text-primary);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--trans-fast);
}

.mobile-nav-link:hover {
  color: var(--clr-cyan);
  background: rgba(0, 212, 255, 0.06);
  border-color: var(--clr-border);
}

.mobile-submenu {
  padding-left: 1.5rem;
  border-left: 2px solid var(--clr-border);
  margin-left: 1.5rem;
}

.mobile-submenu a {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  color: var(--clr-text-secondary);
  transition: color var(--trans-fast);
}

.mobile-submenu a:hover { color: var(--clr-cyan); }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_banner.png');
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(5, 13, 26, 0.92) 0%,
    rgba(5, 13, 26, 0.75) 50%,
    rgba(5, 13, 26, 0.85) 100%
  );
  z-index: 1;
}

/* Animated grid */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
  0% { transform: translateY(0); }
  100% { transform: translateY(60px); }
}

#particle-canvas {
  position: absolute;
  inset: 0;
  z-index: 3;
}

.hero-content {
  position: relative;
  z-index: 4;
  max-width: 820px;
  padding-top: 100px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-cyan);
  margin-bottom: 2rem;
  animation: fadeInDown 0.8s ease both;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--clr-cyan);
  border-radius: 50%;
  animation: pulse-dot 1.5s infinite;
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.9s ease 0.1s both;
}

.hero-title .gradient-text {
  background: linear-gradient(120deg, var(--clr-cyan) 0%, var(--clr-teal) 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--clr-text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 580px;
  animation: fadeInUp 0.9s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.9s ease 0.3s both;
}

/* Hero stats strip */
.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--clr-border);
  flex-wrap: wrap;
  animation: fadeInUp 0.9s ease 0.5s both;
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
}

.hero-stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--clr-cyan);
  font-family: var(--font-tech);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--clr-text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  animation: fadeIn 1s ease 1s both;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--clr-border-hover);
  border-radius: 12px;
  position: relative;
  display: flex;
  justify-content: center;
}

.scroll-mouse::after {
  content: '';
  width: 3px;
  height: 8px;
  background: var(--clr-cyan);
  border-radius: 2px;
  position: absolute;
  top: 5px;
  animation: scroll-down 2s infinite;
}

@keyframes scroll-down {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(14px); opacity: 0; }
}

/* ============================================================
   TRUST BANNER
   ============================================================ */
.trust-banner {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  padding: 2.5rem 0;
}

.trust-banner .container {
  display: flex;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
  justify-content: space-between;
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.trust-num {
  font-size: 2.4rem;
  font-weight: 800;
  font-family: var(--font-tech);
  color: var(--clr-cyan);
  line-height: 1;
}

.trust-label {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-align: center;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-section {
  background: var(--clr-bg-dark);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-image-wrap img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  filter: brightness(0.9) saturate(1.1);
}

.about-image-wrap::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-lg) + 2px);
  background: linear-gradient(135deg, var(--clr-cyan), transparent, var(--clr-teal));
  z-index: -1;
}

.about-image-badge {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  background: rgba(5, 13, 26, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.about-image-badge .badge-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--clr-cyan);
  font-family: var(--font-tech);
  line-height: 1;
}

.about-image-badge .badge-text {
  font-size: 0.8rem;
  color: var(--clr-text-secondary);
  margin-top: 0.2rem;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
}

.about-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: all var(--trans-med);
}

.about-feature-item:hover {
  background: var(--clr-bg-card-hover);
  border-color: var(--clr-border-hover);
}

.feature-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 8px;
  flex-shrink: 0;
}

.feature-icon svg { width: 18px; height: 18px; color: var(--clr-cyan); }

.feature-text strong {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-text-primary);
  margin-bottom: 0.2rem;
}

.feature-text span {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
}

/* ============================================================
   TECHNOLOGIES SECTION
   ============================================================ */
.tech-section { background: transparent; }

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.tech-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  transition: all var(--trans-med);
  position: relative;
  overflow: hidden;
}

.tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--clr-cyan), transparent);
  opacity: 0;
  transition: opacity var(--trans-med);
}

.tech-card:hover {
  background: var(--clr-bg-card-hover);
  border-color: var(--clr-border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow), var(--shadow-card);
}

.tech-card:hover::before { opacity: 1; }

.tech-card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.tech-card-icon svg { width: 26px; height: 26px; color: var(--clr-cyan); }

.tech-card-acronym {
  font-family: var(--font-tech);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--clr-cyan);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.tech-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 1rem;
}

.tech-card p {
  font-size: 0.9rem;
  color: var(--clr-text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.tech-card-specs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tech-spec {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

.tech-spec::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--clr-cyan);
  border-radius: 50%;
  flex-shrink: 0;
}

/* Tech diagram image */
.tech-diagram-wrap {
  margin-top: 4rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  position: relative;
}

.tech-diagram-wrap img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.tech-diagram-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(transparent, rgba(5, 13, 26, 0.95));
}

/* ============================================================
   APPLICATIONS SECTION
   ============================================================ */
.applications-section {
  background: var(--clr-bg-dark);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.app-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
  group: true;
}

.app-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
  filter: brightness(0.7) saturate(1.2);
}

.app-card:hover .app-card-img {
  transform: scale(1.06);
  filter: brightness(0.5) saturate(1.4);
}

.app-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(5, 13, 26, 0.97) 0%,
    rgba(5, 13, 26, 0.5) 45%,
    transparent 100%
  );
  transition: all var(--trans-med);
}

.app-card:hover .app-card-overlay {
  background: linear-gradient(
    to top,
    rgba(5, 13, 26, 0.98) 0%,
    rgba(5, 13, 26, 0.8) 60%,
    rgba(0, 20, 40, 0.6) 100%
  );
}

.app-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
}

.app-card-num {
  font-family: var(--font-tech);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--clr-cyan);
  margin-bottom: 0.5rem;
}

.app-card h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.75rem;
}

.app-card-features {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--trans-slow);
}

.app-card:hover .app-card-features { max-height: 200px; }

.app-card-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--clr-text-secondary);
}

.app-card-feature::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--clr-cyan);
  border-radius: 50%;
  flex-shrink: 0;
}

.app-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-cyan);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--trans-med);
}

.app-card:hover .app-card-cta {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how-section { background: transparent; }

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 4rem;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: calc(12.5% + 24px);
  right: calc(12.5% + 24px);
  height: 2px;
  background: linear-gradient(90deg, var(--clr-cyan), var(--clr-teal), var(--clr-cyan));
  z-index: 0;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-tech);
  font-size: 1.2rem;
  font-weight: 700;
  background: var(--clr-bg-deep);
  border: 2px solid var(--clr-cyan);
  color: var(--clr-cyan);
  margin-bottom: 1.5rem;
  position: relative;
  transition: all var(--trans-med);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.step-item:hover .step-number {
  background: var(--clr-cyan);
  color: var(--clr-bg-deep);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
}

.step-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 0.75rem;
}

.step-item p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ============================================================
   INDUSTRIES SECTION
   ============================================================ */
.industries-section { background: var(--clr-surface); }

.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.industry-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: all var(--trans-med);
  cursor: default;
}

.industry-card:hover {
  background: var(--clr-bg-card-hover);
  border-color: var(--clr-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.industry-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 255, 0.08);
  border-radius: var(--radius-md);
  font-size: 1.8rem;
}

.industry-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 0.6rem;
}

.industry-card p {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ============================================================
   R&D SECTION
   ============================================================ */
.rnd-section {
  background: var(--clr-bg-dark);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.rnd-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.rnd-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.rnd-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.5rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: all var(--trans-med);
}

.rnd-item:hover {
  border-color: var(--clr-border-hover);
  background: var(--clr-bg-card-hover);
}

.rnd-item-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rnd-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 0.35rem;
}

.rnd-item p {
  font-size: 0.83rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials-section { background: transparent; }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.testimonial-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--trans-med);
  position: relative;
}

.testimonial-card:hover {
  border-color: var(--clr-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.testimonial-quote {
  font-size: 3rem;
  color: var(--clr-cyan);
  line-height: 1;
  margin-bottom: 1rem;
  opacity: 0.5;
  font-family: Georgia, serif;
}

.testimonial-text {
  font-size: 0.9rem;
  color: var(--clr-text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-stars {
  color: #fbbf24;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--clr-border);
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-cyan), var(--clr-teal));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-bg-deep);
}

.author-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-text-primary);
}

.author-title {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
}

/* ============================================================
   FAQ SECTION
   ============================================================ */
.faq-section { background: var(--clr-surface); }

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
}

.faq-item {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--trans-fast);
}

.faq-item.open { border-color: var(--clr-border-hover); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-text-primary);
  cursor: pointer;
  transition: color var(--trans-fast);
}

.faq-item.open .faq-question { color: var(--clr-cyan); }

.faq-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--clr-text-muted);
  transition: transform var(--trans-med);
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  color: var(--clr-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--trans-slow), padding var(--trans-med);
}

.faq-item.open .faq-answer { max-height: 300px; }

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-section {
  background: linear-gradient(135deg, var(--clr-bg-deep), #0a1a2e, var(--clr-bg-deep));
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section .section-heading { font-size: clamp(2rem, 4vw, 3rem); }
.cta-section .section-subheading { margin: 1rem auto 2.5rem; }

.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: rgba(3, 8, 15, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--clr-border);
  padding: var(--space-lg) 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {}

.footer-logo {
  height: 50px;
  width: auto;
  object-fit: contain;
  margin-bottom: 1.25rem;
  filter: brightness(1.1);
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 280px;
}

.footer-socials {
  display: flex;
  gap: 0.75rem;
}

.social-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  color: var(--clr-text-muted);
  transition: all var(--trans-fast);
}

.social-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--clr-cyan);
  color: var(--clr-cyan);
}

.social-btn svg { width: 16px; height: 16px; }

.footer-col h5 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-secondary);
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  transition: color var(--trans-fast);
}

.footer-links a:hover { color: var(--clr-cyan); }

/* Footer office addresses */
.footer-offices {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-office {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.footer-office-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-cyan);
  margin-bottom: 0.3rem;
}

.footer-office-label .flag {
  font-size: 0.9rem;
}

.footer-office address {
  font-style: normal;
  font-size: 0.83rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.83rem;
  color: var(--clr-text-muted);
  margin-top: 0.5rem;
  transition: color var(--trans-fast);
}

.footer-contact-item:hover { color: var(--clr-cyan); }
.footer-contact-item svg { width: 14px; height: 14px; flex-shrink: 0; }

.footer-divider {
  border: none;
  border-top: 1px solid var(--clr-border);
  margin-bottom: 2rem;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

.footer-legal a {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  transition: color var(--trans-fast);
}

.footer-legal a:hover { color: var(--clr-cyan); }

/* ============================================================
   PAGE HERO (inner pages)
   ============================================================ */
.page-hero {
  position: relative;
  padding: 10rem 0 6rem;
  overflow: hidden;
  background: var(--clr-bg-dark);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.04), transparent);
}

.page-hero .container { position: relative; z-index: 1; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  margin-bottom: 1.5rem;
}

.breadcrumb a { color: var(--clr-text-muted); transition: color var(--trans-fast); }
.breadcrumb a:hover { color: var(--clr-cyan); }
.breadcrumb span { color: var(--clr-cyan); }

.page-hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--clr-text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

/* ============================================================
   CONTENT SECTION
   ============================================================ */
.content-section {
  background: var(--clr-bg-dark);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.content-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1.25rem;
  color: var(--clr-text-primary);
}

.content-section p {
  color: var(--clr-text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

/* Feature list */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2rem 0;
}

.feature-list-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem 1.5rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: all var(--trans-med);
}

.feature-list-item:hover {
  border-color: var(--clr-border-hover);
  background: var(--clr-bg-card-hover);
}

.feature-list-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}

.feature-list-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 0.3rem;
}

.feature-list-item p {
  font-size: 0.83rem;
  color: var(--clr-text-muted);
  margin: 0;
  line-height: 1.6;
}

/* Application detail grid */
.app-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.app-detail-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  position: sticky;
  top: 100px;
}

.app-detail-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: start;
}

.contact-form-wrap {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.contact-form-wrap h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-text-secondary);
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  font-family: var(--font-main);
  font-size: 0.9rem;
  color: var(--clr-text-primary);
  width: 100%;
  transition: border-color var(--trans-fast), box-shadow var(--trans-fast);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--clr-text-muted); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--clr-cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238ab4d4' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  cursor: pointer;
}

.form-group select option { background: var(--clr-bg-dark); }

.form-group textarea { resize: vertical; min-height: 130px; }

.contact-info-wrap { display: flex; flex-direction: column; gap: 1.5rem; }

.contact-info-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--trans-med);
}

.contact-info-card:hover {
  border-color: var(--clr-border-hover);
  background: var(--clr-bg-card-hover);
}

.contact-office-flag {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-cyan);
  margin-bottom: 0.75rem;
}

.contact-office-flag .flag { font-size: 1.2rem; }

.contact-info-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 0.4rem;
}

.contact-info-card address {
  font-style: normal;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--clr-border);
}

.contact-detail svg { width: 15px; height: 15px; color: var(--clr-cyan); flex-shrink: 0; }

.contact-detail a {
  font-size: 0.875rem;
  color: var(--clr-text-secondary);
  transition: color var(--trans-fast);
}

.contact-detail a:hover { color: var(--clr-cyan); }

/* Map placeholder */
.map-placeholder {
  height: 220px;
  background: rgba(0, 212, 255, 0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--clr-text-muted);
  font-size: 0.85rem;
  margin-top: 1.5rem;
  cursor: pointer;
  transition: all var(--trans-med);
}

.map-placeholder:hover {
  border-color: var(--clr-cyan);
  color: var(--clr-cyan);
}

.map-placeholder svg { width: 32px; height: 32px; }

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
  .steps-grid::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .about-grid,
  .rnd-inner,
  .app-detail-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .app-detail-image { position: static; }
  .app-grid { grid-template-columns: 1fr 1fr; }
  .testimonials-grid { grid-template-columns: 1fr 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root {
    --space-xl: 4rem;
    --space-lg: 3rem;
  }

  .nav-menu,
  .navbar-cta { display: none; }
  .hamburger { display: flex; }

  .hero-title { font-size: clamp(2.2rem, 8vw, 3.5rem); }
  .hero-stats { gap: 1.5rem; }

  .about-features { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }

  .form-row { grid-template-columns: 1fr; }

  .trust-banner .container {
    gap: 1.5rem;
    justify-content: center;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .industries-grid { grid-template-columns: 1fr 1fr; }
  .trust-item { min-width: 45%; text-align: center; }
}

/* Page-specific overrides */
.tech-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 5rem;
}

.tech-detail-grid.reverse { direction: rtl; }
.tech-detail-grid.reverse > * { direction: ltr; }

.tech-detail-visual {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.tech-detail-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

@media (max-width: 768px) {
  .tech-detail-grid {
    grid-template-columns: 1fr;
    direction: ltr;
  }
}

/* ============================================================
   BACK TO TOP BUTTON
   ============================================================ */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 500;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-cyan), var(--clr-teal));
  color: var(--clr-bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.6);
}

#back-to-top svg {
  width: 18px;
  height: 18px;
  stroke-width: 2.5;
}

/* ============================================================
   FLOATING SHAPES (hero decorative)
   ============================================================ */
.hero-shape {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
}

.hero-shape-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
  top: -150px;
  right: -100px;
  animation: float 8s ease-in-out infinite;
}

.hero-shape-2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0,255,204,0.04) 0%, transparent 70%);
  bottom: 100px;
  right: 200px;
  animation: float 12s ease-in-out infinite reverse;
}

/* ============================================================
   NOTIFICATION TOAST
   ============================================================ */
.toast {
  position: fixed;
  bottom: 5rem;
  right: 2rem;
  z-index: 600;
  background: rgba(7, 18, 36, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid var(--clr-border-hover);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--clr-text-primary);
  box-shadow: var(--shadow-deep);
  transform: translateX(120%);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  max-width: 320px;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ============================================================
   ANIMATED SECTION DECORATORS
   ============================================================ */
.section-decorator {
  position: absolute;
  width: 1px;
  height: 80px;
  background: linear-gradient(transparent, var(--clr-cyan), transparent);
  left: 50%;
  opacity: 0.4;
}

.section-decorator.top { top: 0; }
.section-decorator.bottom { bottom: 0; }

/* ============================================================
   SMOOTH PAGE TRANSITIONS
   ============================================================ */
@keyframes page-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

body { animation: page-in 0.5s ease both; }

/* ============================================================
   FORM VALIDATION & ENHANCED STYLES
   ============================================================ */

/* -- Input Wrapper (for icon positioning) -- */
.input-wrap {
  position: relative;
}

/* -- Valid Icon -- */
.input-icon.valid-icon {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--clr-teal);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.input-icon.valid-icon svg {
  width: 100%;
  height: 100%;
}

/* Textarea valid icon — pin to top right */
.input-wrap textarea ~ .valid-icon {
  top: 1rem;
  transform: none;
}

/* -- Validated State: Valid -- */
.form-group.is-valid input,
.form-group.is-valid textarea {
  border-color: var(--clr-teal) !important;
  box-shadow: 0 0 0 2px rgba(0, 255, 204, 0.12);
}

.form-group.is-valid .valid-icon {
  opacity: 1;
}

/* -- Validated State: Error -- */
.form-group.is-invalid input,
.form-group.is-invalid textarea,
.form-group.is-invalid select {
  border-color: #ff4d6d !important;
  box-shadow: 0 0 0 2px rgba(255, 77, 109, 0.14);
  animation: shake 0.4s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

/* -- Field Error Messages -- */
.field-error {
  display: block;
  font-size: 0.78rem;
  color: #ff4d6d;
  margin-top: 0.4rem;
  min-height: 1rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.25s ease;
}

.form-group.is-invalid .field-error {
  opacity: 1;
  transform: translateY(0);
}

/* -- Form Error Banner -- */
.form-error-banner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  background: rgba(255, 77, 109, 0.08);
  border: 1px solid rgba(255, 77, 109, 0.35);
  border-radius: var(--radius-md);
  color: #ff4d6d;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  animation: fade-slide-in 0.3s ease;
}

.form-error-banner[hidden] { display: none; }

.form-error-banner svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

@keyframes fade-slide-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* -- Label abbr (required star) -- */
label abbr {
  text-decoration: none;
  color: var(--clr-cyan);
  font-weight: 700;
  margin-left: 0.1em;
}

/* -- Optional Label -- */
.optional-label {
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  font-weight: 400;
  margin-left: 0.35em;
}

/* -- Enhanced Select Wrapper -- */
.select-wrap {
  position: relative;
}

.select-wrap select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  padding-right: 2.5rem;
  cursor: pointer;
}

.select-arrow {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  width: 16px;
  height: 16px;
  color: var(--clr-text-muted);
  transition: transform 0.2s ease;
}

.select-wrap select:focus ~ .select-arrow {
  transform: translateY(-50%) rotate(180deg);
  color: var(--clr-cyan);
}

.select-arrow svg {
  width: 100%;
  height: 100%;
}

/* -- Character Counter -- */
.char-count {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  text-align: right;
  margin-top: 0.4rem;
  font-family: var(--font-tech);
  transition: color 0.2s ease;
}

.char-count.ready   { color: var(--clr-teal); }
.char-count.warning { color: var(--clr-orange); }

/* -- Consent Checkbox -- */
.consent-group {
  margin-top: 0.5rem;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--clr-text-secondary);
  line-height: 1.6;
}

.checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox-custom {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--clr-border-hover);
  border-radius: 5px;
  background: rgba(0,212,255,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  margin-top: 2px;
  position: relative;
}

.checkbox-custom::after {
  content: '';
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--clr-bg-deep);
  border-bottom: 2px solid var(--clr-bg-deep);
  transform: rotate(45deg) translateY(-1px);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom {
  background: linear-gradient(135deg, var(--clr-cyan), var(--clr-teal));
  border-color: var(--clr-cyan);
}

.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom::after {
  opacity: 1;
}

.checkbox-label input[type="checkbox"]:focus-visible ~ .checkbox-custom {
  outline: 2px solid var(--clr-cyan);
  outline-offset: 2px;
}

.form-group.is-invalid .checkbox-custom {
  border-color: #ff4d6d;
  box-shadow: 0 0 0 2px rgba(255,77,109,0.15);
}

/* -- Security Note -- */
.form-security-note {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  color: var(--clr-text-muted);
  margin-top: 1rem;
  line-height: 1.5;
}

.form-security-note svg {
  flex-shrink: 0;
  color: var(--clr-teal);
  opacity: 0.8;
}

/* -- Submit button loading state -- */
#submit-contact-btn.loading {
  pointer-events: none;
  opacity: 0.8;
}

#submit-contact-btn .btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}