/* ============================================================
   AEROINTEL DRONE SOLUTIONS — Design Tokens + Component Styles
   Palette: Deep space navy + electric cyan + thermal orange
   ============================================================ */

/* === GOOGLE FONTS === */
@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700;800&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;600&display=swap');

/* === DESIGN TOKENS === */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'Barlow Condensed', 'Impact', sans-serif;
  --font-body:    'Inter', 'Helvetica Neue', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Brand Colors — Deep Space + Cyan + Thermal */
  --color-bg:              #090910;
  --color-surface:         #0d1420;
  --color-surface-2:       #111926;
  --color-surface-offset:  #151f2e;
  --color-divider:         #1e2d40;
  --color-border:          #243347;

  --color-text:            #e8eef5;
  --color-text-muted:      #7a94b0;
  --color-text-faint:      #3d546a;
  --color-text-inverse:    #080c12;

  /* Cyan — primary */
  --color-primary:         #00d4ff;
  --color-primary-hover:   #00b8e0;
  --color-primary-dim:     rgba(0, 212, 255, 0.12);
  --color-primary-glow:    rgba(0, 212, 255, 0.25);

  /* Thermal orange — accent */
  --color-accent:          #ff6b35;
  --color-accent-hover:    #e85520;
  --color-accent-dim:      rgba(255, 107, 53, 0.12);
  --color-accent-glow:     rgba(255, 107, 53, 0.3);

  /* Thermal gradient (used in thermal card demos) */
  --thermal-cold:  #1a1a8c;
  --thermal-cool:  #0066ff;
  --thermal-mid:   #00cc44;
  --thermal-warm:  #ffcc00;
  --thermal-hot:   #ff4400;
  --thermal-max:   #ff0066;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:    0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:    0 12px 40px rgba(0,0,0,0.6);
  --shadow-cyan:  0 0 30px rgba(0, 212, 255, 0.2);
  --shadow-orange:0 0 30px rgba(255, 107, 53, 0.25);

  /* Content widths */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1280px;
}
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.4s var(--ease-out),
              backdrop-filter 0.4s var(--ease-out),
              box-shadow 0.4s var(--ease-out);
}

.nav--scrolled {
  background: rgba(9, 9, 16, 0.88);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--color-divider);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.nav-logo-mark {
  width: 40px;
  height: 40px;
}

.nav-logo-img {
  height: 72px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.15));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s var(--ease-out);
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: var(--color-text-inverse) !important;
  font-family: var(--font-body);
  font-size: var(--text-sm) !important;
  font-weight: 600 !important;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-full);
  transition: background var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive) !important;
}

.nav-cta:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-cyan);
  transform: translateY(-1px);
}

.nav-cta::after { display: none !important; }

/* Mobile nav */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}

@media (max-width: 768px) {
  .nav-hamburger { display: flex; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(9, 9, 16, 0.97);
    backdrop-filter: blur(20px);
    padding: var(--space-8);
    gap: var(--space-6);
    border-bottom: 1px solid var(--color-divider);
  }
  .nav-cta-wrap { display: none; }
}

/* ============================================================
   HERO — PARALLAX + VIDEO BACKGROUND
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.1);
  will-change: transform;
  filter: brightness(0.35) saturate(0.8);
}

/* Fallback gradient when video not available */
.hero-video-fallback {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 40%, rgba(0,212,255,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 80% at 20% 70%, rgba(255,107,53,0.08) 0%, transparent 60%),
    linear-gradient(160deg, #050a12 0%, #0d1828 50%, #060e1a 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(9,9,16,0.15) 0%,
      rgba(9,9,16,0.3)  40%,
      rgba(9,9,16,0.8)  85%,
      rgba(9,9,16,1)    100%
    );
  z-index: 1;
}

/* Animated scan line effect */
.hero-scanlines {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,212,255,0.015) 2px,
    rgba(0,212,255,0.015) 4px
  );
  pointer-events: none;
}

/* HUD corner brackets */
.hero-hud {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.hud-corner {
  position: absolute;
  width: 60px;
  height: 60px;
}

.hud-corner--tl { top: 80px; left: 24px; border-top: 2px solid var(--color-primary); border-left: 2px solid var(--color-primary); }
.hud-corner--tr { top: 80px; right: 24px; border-top: 2px solid var(--color-primary); border-right: 2px solid var(--color-primary); }
.hud-corner--bl { bottom: 24px; left: 24px; border-bottom: 2px solid var(--color-primary); border-left: 2px solid var(--color-primary); }
.hud-corner--br { bottom: 24px; right: 24px; border-bottom: 2px solid var(--color-primary); border-right: 2px solid var(--color-primary); }

.hud-status {
  position: absolute;
  top: 88px;
  right: 80px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.hud-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hud-dot::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

@media (max-width: 768px) {
  .hud-status, .hud-corner { display: none; }
}

/* Hero Content */
.hero-content {
  position: relative;
  z-index: 4;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-32) var(--space-8) var(--space-24);
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: clamp(1rem, 0.8rem + 1vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  opacity: 0;
  animation: heroFadeUp 0.8s 0.3s var(--ease-out) forwards;
}

.hero-eyebrow::before,
.hero-eyebrow::after {
  content: '';
  display: block;
  height: 1px;
  width: 40px;
  background: var(--color-primary);
  opacity: 0.5;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 0.4rem + 5.5vw, 6.5rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  line-height: 0.92;
  color: var(--color-text);
  margin-bottom: var(--space-8);
  opacity: 0;
  animation: heroFadeUp 0.8s 0.5s var(--ease-out) forwards;
}

.hero-headline .highlight {
  color: var(--color-primary);
  display: block;
  -webkit-text-stroke: 0;
}

.hero-headline .stroke {
  -webkit-text-stroke: 2px var(--color-text);
  color: transparent;
}

.hero-subheadline {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 300;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto var(--space-10);
  line-height: 1.6;
  opacity: 0;
  animation: heroFadeUp 0.8s 0.7s var(--ease-out) forwards;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  opacity: 0;
  animation: heroFadeUp 0.8s 0.9s var(--ease-out) forwards;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 0 40px rgba(0,212,255,0.4);
  transform: translateY(-2px);
}

.btn-primary:hover::before { opacity: 1; }

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-interactive),
              background var(--transition-interactive),
              transform var(--transition-interactive);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
  transform: translateY(-2px);
}

/* Hero scroll indicator */
.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  opacity: 0;
  animation: heroFadeUp 0.8s 1.2s var(--ease-out) forwards;
}

.hero-scroll-hint span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.scroll-mouse {
  width: 22px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 11px;
  position: relative;
  display: flex;
  justify-content: center;
}

.scroll-mouse::after {
  content: '';
  position: absolute;
  top: 6px;
  width: 3px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  80% { transform: translateY(12px); opacity: 0; }
}

/* Hero stats bar */
.hero-stats {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 4;
  display: flex;
  justify-content: center;
  gap: 0;
  border-top: 1px solid var(--color-divider);
}

.hero-stat {
  padding: var(--space-4) var(--space-10);
  text-align: center;
  border-right: 1px solid var(--color-divider);
  opacity: 0;
  animation: heroFadeUp 0.6s var(--ease-out) forwards;
}

.hero-stat:last-child { border-right: none; }
.hero-stat:nth-child(1) { animation-delay: 1.0s; }
.hero-stat:nth-child(2) { animation-delay: 1.1s; }
.hero-stat:nth-child(3) { animation-delay: 1.2s; }
.hero-stat:nth-child(4) { animation-delay: 1.3s; }

.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-top: var(--space-1);
}

@media (max-width: 640px) {
  .hero-stats { display: none; }
  .hero-scroll-hint { display: none; }
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   SECTION SHARED
   ============================================================ */
.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.container {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-8);
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.section-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--color-primary);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 0.95;
  margin-bottom: var(--space-4);
}

.section-lead {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* Scroll reveal */
.reveal {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .reveal {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 60%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* ============================================================
   SERVICES SECTION — THERMAL HOVER DEMOS
   ============================================================ */
.services {
  background: var(--color-surface);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-divider), transparent);
}

.services-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

@media (max-width: 640px) {
  .services-header { grid-template-columns: 1fr; }
  .services-header-link { display: none; }
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 900px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .services-grid { grid-template-columns: 1fr; }
}

/* Service card */
.service-card {
  position: relative;
  border-radius: var(--radius-xl);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.3s var(--ease-out),
              transform 0.3s var(--ease-out),
              box-shadow 0.3s var(--ease-out);
}

.service-card:hover {
  border-color: var(--color-border);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), var(--shadow-cyan);
}

/* Thermal demo panel — top of each card */
.service-card-visual {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: #0a0a1a;
}

/* Normal photo layer */
.card-visual-normal {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: opacity 0.6s var(--ease-out);
  opacity: 1;
}

/* Thermal overlay — revealed on hover */
.card-visual-thermal {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.6s var(--ease-out);
}

.service-card:hover .card-visual-normal { opacity: 0; }
.service-card:hover .card-visual-thermal { opacity: 1; }

/* Thermal scan line animation on hover */
.card-scan-line {
  position: absolute;
  top: -4px;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  z-index: 3;
  transition: opacity 0.2s;
}

.service-card:hover .card-scan-line {
  opacity: 1;
  animation: cardScan 1.2s linear infinite;
}

@keyframes cardScan {
  from { top: -4px; }
  to   { top: 100%; }
}

/* Thermal badge */
.card-thermal-badge {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  z-index: 4;
  padding: 2px var(--space-3);
  background: rgba(255,107,53,0.9);
  color: white;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.service-card:hover .card-thermal-badge {
  opacity: 1;
  transform: translateY(0);
}

/* Card crosshair overlay */
.card-crosshair {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.4s var(--ease-out);
  pointer-events: none;
}

.service-card:hover .card-crosshair { opacity: 1; }

.card-crosshair svg {
  width: 100%;
  height: 100%;
}

/* Service card body */
.service-card-body {
  padding: var(--space-6);
}

.service-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-dim);
  border: 1px solid rgba(0,212,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  transition: background 0.3s, box-shadow 0.3s;
}

.service-card:hover .service-icon {
  background: var(--color-primary-dim);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
}

.service-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: 1.1;
}

.service-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-5);
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.service-tag {
  padding: 2px var(--space-3);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  transition: border-color 0.2s, color 0.2s;
}

.service-card:hover .service-tag {
  border-color: rgba(0,212,255,0.2);
  color: var(--color-text-muted);
}

/* Thermal color gradient as background for card visual */
.thermal-roof {
  background: radial-gradient(ellipse 70% 50% at 50% 40%, #ff6b35 0%, #ffcc00 25%, #00cc44 55%, #0066ff 80%, #1a1a8c 100%);
}

.thermal-solar {
  background: radial-gradient(ellipse 60% 60% at 40% 50%, #ff4400 0%, #ff6b35 20%, #ffcc00 40%, #00cc44 65%, #0066ff 85%, #1a1a8c 100%);
}

.thermal-pipeline {
  background: linear-gradient(90deg, #1a1a8c 0%, #0066ff 20%, #00cc44 40%, #ffcc00 60%, #ff6b35 75%, #ff4400 85%, #ff0066 100%);
}

.thermal-tower {
  background: radial-gradient(ellipse 30% 80% at 50% 50%, #ff4400 0%, #ff6b35 30%, #ffcc00 55%, #00cc44 75%, #0066ff 90%, #1a1a8c 100%);
}

.thermal-mapping {
  background: radial-gradient(ellipse 80% 40% at 60% 30%, #ffcc00 0%, #ff6b35 35%, #00cc44 60%, #0066ff 80%, #1a1a8c 100%);
}

.thermal-facade {
  background: radial-gradient(ellipse 90% 50% at 30% 60%, #ff6b35 0%, #ffcc00 30%, #0066ff 60%, #1a1a8c 90%);
}

/* Normal image backgrounds using CSS gradients as stand-ins */
.normal-roof {
  background: linear-gradient(160deg, #1a2535 0%, #243347 60%, #1c2d42 100%);
}
.normal-solar {
  background: linear-gradient(135deg, #0d1824 0%, #1a2d1a 50%, #0d1420 100%);
}
.normal-pipeline {
  background: linear-gradient(170deg, #1e2830 0%, #2a3040 50%, #1a2430 100%);
}
.normal-tower {
  background: linear-gradient(145deg, #12181f 0%, #1e2a38 60%, #141c28 100%);
}
.normal-mapping {
  background: linear-gradient(150deg, #0d1820 0%, #1a2430 55%, #0d1624 100%);
}
.normal-facade {
  background: linear-gradient(165deg, #16202c 0%, #1e2c40 55%, #111e2e 100%);
}

/* ============================================================
   ABOUT / WHY AEROINTEL SECTION
   ============================================================ */
.about {
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

@media (max-width: 800px) {
  .about-grid { grid-template-columns: 1fr; }
}

.about-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
}

.about-visual-inner {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 50% 40%, rgba(0,212,255,0.1) 0%, transparent 70%),
    linear-gradient(160deg, #0d1828, #080c12);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Animated radar/sonar ring */
.radar {
  position: relative;
  width: 200px;
  height: 200px;
}

.radar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  animation: radarPulse 3s ease-out infinite;
}

.radar-ring:nth-child(2) { animation-delay: 1s; }
.radar-ring:nth-child(3) { animation-delay: 2s; }

@keyframes radarPulse {
  0%   { width: 20px; height: 20px; opacity: 0.8; }
  100% { width: 200px; height: 200px; opacity: 0; }
}

.radar-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 20px var(--color-primary);
}

.about-badge {
  position: absolute;
  bottom: var(--space-6);
  left: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: rgba(9,9,16,0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
}

.about-badge-icon {
  color: var(--color-primary);
}

.about-badge-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.about-badge-text strong {
  display: block;
  color: var(--color-text);
  font-size: var(--text-sm);
}

/* About features list */
.about-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.about-feature {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}

.about-feature:hover {
  border-color: var(--color-divider);
  background: var(--color-surface);
}

.about-feature-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.about-feature-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.about-feature-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   PROCESS SECTION — HORIZONTAL STEPS
   ============================================================ */
.process {
  background: var(--color-surface);
  overflow: hidden;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: var(--space-16);
  position: relative;
}

/* Connecting line */
.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12.5%;
  right: 12.5%;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 0;
}

@media (max-width: 700px) {
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
  .process-steps::before { display: none; }
}

.process-step {
  position: relative;
  padding: 0 var(--space-6);
  padding-top: var(--space-4);
  z-index: 1;
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .process-step {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 70%;
  }
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
}

.step-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ============================================================
   INDUSTRIES SECTION
   ============================================================ */
.industries {
  background: var(--color-bg);
}

.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-12);
}

@media (max-width: 768px) { .industries-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .industries-grid { grid-template-columns: 1fr; } }

.industry-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: border-color 0.3s var(--ease-out),
              background 0.3s var(--ease-out),
              transform 0.3s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.industry-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary-dim), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.industry-card:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-2);
  transform: translateY(-3px);
}

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

.industry-icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

.industry-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.industry-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  padding-block: clamp(var(--space-20), 10vw, var(--space-32));
  background:
    radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0,212,255,0.07) 0%, transparent 70%),
    var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.cta-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  line-height: 0.95;
}

.cta-title span { color: var(--color-primary); }

.cta-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto var(--space-10);
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact {
  background: var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-16);
  align-items: start;
}

@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.contact-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  transition: border-color 0.3s;
}

.contact-item:hover { border-color: var(--color-primary); }

.contact-item-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.contact-item-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.contact-item-value {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 500;
}

/* Contact form */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 480px) { .form-row { grid-template-columns: 1fr; } }

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.form-input,
.form-select,
.form-textarea {
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237a94b0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-submit {
  width: 100%;
  padding: var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

.form-submit:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 0 40px rgba(0,212,255,0.4);
  transform: translateY(-2px);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-16);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

@media (max-width: 800px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  line-height: 1.65;
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-5);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  list-style: none;
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-bottom p {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
}

.footer-badges {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.footer-badge {
  padding: 3px var(--space-3);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.footer-badge--sdvosb {
  border-color: rgba(255, 107, 53, 0.4);
  color: var(--color-accent);
  background: rgba(255, 107, 53, 0.07);
}

/* Footer logo */
.footer-logo-img {
  height: 90px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

/* Footer SDVOSB badge */
.footer-sdvosb-img {
  height: 64px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  vertical-align: middle;
}

/* About section SDVOSB badge */
.about-sdvosb-wrap {
  position: absolute;
  bottom: var(--space-6);
  left: var(--space-6);
}

.about-sdvosb-badge {
  height: 150px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

/* ============================================================
   SMOOTH SCROLL SECTION DIVIDERS
   ============================================================ */
.section-divider {
  position: relative;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-divider), transparent);
  overflow: visible;
}

.section-divider::after {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* ============================================================
   PARALLAX BG ELEMENTS
   ============================================================ */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

.bg-glow--cyan {
  background: rgba(0, 212, 255, 0.06);
}

.bg-glow--orange {
  background: rgba(255, 107, 53, 0.06);
}

/* ============================================================
   COUNTERS STRIP
   ============================================================ */
.counters {
  background: var(--color-surface-2, var(--color-surface));
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}

.counters-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-1);
}

@media (max-width: 640px) { .counters-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); } }

.counter-item {
  text-align: center;
  padding: var(--space-4);
  border-right: 1px solid var(--color-divider);
}

.counter-item:last-child { border-right: none; }

@media (max-width: 640px) {
  .counter-item:nth-child(2n) { border-right: none; }
  .counter-item:nth-child(-n+2) { border-bottom: 1px solid var(--color-divider); }
}

.counter-value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  display: block;
}

.counter-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-top: var(--space-2);
  display: block;
}