/* ==========================================================================
   AVIAJET SERVICES - BASE STYLESHEET (css/base.css)
   Tokens, Typography, Reset, Header, Footer, Shared Components, Accessibility
   ========================================================================== */

:root {
  /* Brand Colors */
  --amber: #F8A800;
  --amber-dark: #C98600;
  --amber-light: #FFBF33;
  --amber-glow: rgba(248, 168, 0, 0.35);
  --amber-glow-soft: rgba(248, 168, 0, 0.15);
  --amber-glow-strong: rgba(248, 168, 0, 0.6);

  --charcoal: #181818;
  --charcoal-2: #232323;
  --charcoal-3: #2D2D2D;
  --slate: #606060;
  --slate-light: #8E8E8E;
  
  --white: #FFFFFF;
  --off-white: #F6F6F4;
  --line: #E5E5E2;
  --line-dark: #333333;

  /* Typography */
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Layout & Sizing */
  --header-height: 84px;
  --container-max: 1280px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  /* Transitions */
  --transition-fast: 200ms ease;
  --transition-base: 300ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 450ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --shadow-dark: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-amber: 0 8px 25px var(--amber-glow);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--charcoal);
  background-color: var(--off-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--amber);
  color: var(--charcoal);
  font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  z-index: 99999;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 20px;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: inherit;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1, h2 {
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

p {
  margin-bottom: 1.25rem;
  color: inherit;
}

p:last-child {
  margin-bottom: 0;
}

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

ul, ol {
  list-style: none;
}

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

button, input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (min-width: 768px) {
  .container {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}

/* Section Header Shared */
.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--amber);
  background: var(--amber-glow-soft);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 1.2rem;
  border: 1px solid rgba(248, 168, 0, 0.35);
}

.section-tag::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 10px var(--amber);
  animation: pulse-dot 2s infinite ease-in-out;
}

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

.section-title {
  font-size: clamp(2rem, 3.8vw, 2.9rem);
  margin-bottom: 1.1rem;
}

.section-description {
  font-size: 1.125rem;
  color: var(--slate);
  line-height: 1.65;
}

/* Section Background Themes */
.section-dark {
  background-color: var(--charcoal);
  color: var(--white);
  position: relative;
}

.section-dark .section-description {
  color: #A0A0A0;
}

.section-light {
  background-color: var(--off-white);
  color: var(--charcoal);
}

/* Page Hero Banner for Inner Pages with Cinematic Backgrounds */
.page-banner {
  position: relative;
  background-color: var(--charcoal);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  color: var(--white);
  padding: calc(var(--header-height) + 3.8rem) 0 4.8rem;
  border-bottom: 1px solid rgba(248, 168, 0, 0.25);
  overflow: hidden;
}

/* Dark aerospace gradient overlay ensuring high contrast & text legibility */
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(16, 16, 16, 0.90) 0%, rgba(24, 24, 24, 0.82) 50%, rgba(14, 14, 14, 0.94) 100%);
  z-index: 1;
  pointer-events: none;
}

.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 75% 35%, rgba(248, 168, 0, 0.18) 0%, transparent 65%);
  z-index: 1;
  pointer-events: none;
}

.page-banner > .container {
  position: relative;
  z-index: 2;
}

/* Contextual aerospace background images per page */
.page-banner-parts {
  background-image: url('../assets/img/hero-jet-engine.jpg');
}

.page-banner-services {
  background-image: url('../assets/img/aircraft-maintenance-hangar.jpg');
}

.page-banner-repair {
  background-image: url('../assets/img/wheel-brake-inspection.jpg');
}

.page-banner-about {
  background-image: url('../assets/img/aircraft-maintenance-hangar.jpg');
}

.page-banner-contact {
  background-image: url('../assets/img/cockpit-avionics-display.jpg');
}

.page-banner-content {
  position: relative;
  z-index: 2;
  max-width: 1050px;
}

/* Heading in One Line */
.page-banner-title {
  font-size: clamp(1.85rem, 3.6vw, 3.2rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1.25rem;
  line-height: 1.18;
  white-space: nowrap;
}

@media (max-width: 820px) {
  .page-banner-title {
    white-space: normal;
    font-size: clamp(1.65rem, 5.5vw, 2.2rem);
  }
}

.page-banner-title span.amber-text {
  color: var(--amber);
  text-shadow: 0 0 25px var(--amber-glow);
}

.page-banner-desc {
  font-size: 1.15rem;
  color: #D6D6D3;
  line-height: 1.65;
  margin-bottom: 2rem;
  max-width: 840px;
}

/* Banner Stats Pills - All in One Line */
.banner-stats-row {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.85rem;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.banner-stats-row::-webkit-scrollbar {
  display: none;
}

.banner-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(24, 24, 24, 0.78);
  border: 1px solid rgba(248, 168, 0, 0.35);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #F0F0EE;
  backdrop-filter: blur(10px);
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.banner-stat-pill svg {
  color: var(--amber);
  flex-shrink: 0;
}

/* Breadcrumbs */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: #888888;
  margin-bottom: 1.5rem;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.breadcrumb-nav a {
  color: #B5B5B5;
  transition: color var(--transition-fast);
}

.breadcrumb-nav a:hover {
  color: var(--amber);
}

.breadcrumb-nav .current {
  color: var(--amber);
  font-weight: 700;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  min-height: 48px;
}

.btn-primary {
  background-color: var(--amber);
  color: var(--charcoal);
  box-shadow: var(--shadow-amber);
  border: 1px solid var(--amber);
}

.btn-primary:hover {
  background-color: var(--amber-dark);
  border-color: var(--amber-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(248, 168, 0, 0.5);
  color: var(--charcoal);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(248, 168, 0, 0.08);
  transform: translateY(-2px);
}

.btn-outline-dark {
  background: transparent;
  color: var(--charcoal);
  border: 1px solid var(--charcoal);
}

.btn-outline-dark:hover {
  background: var(--charcoal);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 10px 18px;
  font-size: 0.8125rem;
  min-height: 40px;
}

.btn-icon {
  width: 18px;
  height: 18px;
  stroke-width: 2.5;
}

/* ==========================================================================
   STICKY HEADER & HIGH-CONTRAST LOGO CAPSULE
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background-color var(--transition-base), box-shadow var(--transition-base), height var(--transition-base);
  background-color: transparent;
}

.site-header.scrolled,
.site-header.inner-page-header {
  background-color: rgba(24, 24, 24, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 22px rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  height: 74px;
}

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

/* High-Contrast Logo Badge to Ensure 100% Brand Visibility */
.brand-logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.logo-badge {
  background: #FFFFFF;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.brand-logo-link:hover .logo-badge {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 6px 20px var(--amber-glow);
}

.brand-logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
  display: block;
}

/* Footer Logo Badge */
.footer-logo-badge {
  background: #FFFFFF;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.footer-logo {
  height: 42px;
  width: auto;
  object-fit: contain;
  display: block;
}

/* Desktop Navigation */
.desktop-nav {
  display: none;
}

@media (min-width: 1024px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
  }
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #D6D6D6;
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--amber);
  transition: width var(--transition-base);
  border-radius: var(--radius-pill);
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-cta-group {
  display: none;
}

@media (min-width: 768px) {
  .header-cta-group {
    display: flex;
    align-items: center;
    gap: 1rem;
  }
}

/* Mobile Hamburger Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 44px;
  height: 44px;
  padding: 10px 8px;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
  z-index: 1002;
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

.hamburger-line {
  width: 26px;
  height: 2px;
  background-color: var(--white);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
  border-radius: 2px;
}

.menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
  background-color: var(--amber);
}

.menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
  background-color: var(--amber);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 82%;
  max-width: 360px;
  height: 100vh;
  background-color: var(--charcoal-2);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6rem 2rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: right var(--transition-smooth);
  z-index: 1001;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.7);
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: 1000;
}

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

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--amber);
}

.mobile-nav-footer {
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--charcoal);
  color: var(--white);
  padding: 5rem 0 2rem;
  border-top: 1px solid var(--line-dark);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-top-grid {
    grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
  }
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-desc {
  font-size: 0.9375rem;
  color: #A0A0A0;
  line-height: 1.6;
}

.footer-compliance-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--amber);
  background: rgba(248, 168, 0, 0.1);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(248, 168, 0, 0.2);
  align-self: flex-start;
}

.footer-col-title {
  font-size: 1rem;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background-color: var(--amber);
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-list a {
  font-size: 0.875rem;
  color: #A8A8A8;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links-list a:hover {
  color: var(--amber);
  padding-left: 4px;
}

.footer-brands-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.footer-brands-list a {
  font-size: 0.8125rem;
  color: #8C8C8C;
}

.footer-brands-list a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-copyright {
  font-size: 0.8125rem;
  color: #808080;
}

.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.footer-legal-links a {
  font-size: 0.8125rem;
  color: #808080;
}

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

/* ==========================================================================
   FLOATING ACTIONS & COOKIE BANNER
   ========================================================================== */
.floating-actions {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}

.fab-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-base);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.25);
  border: none;
}

.fab-btn:hover {
  transform: translateY(-3px) scale(1.05);
}

.fab-whatsapp {
  background-color: #25D366;
  color: #FFFFFF;
}

.fab-whatsapp:hover {
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.5);
}

.fab-top {
  background-color: var(--charcoal);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.15);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform var(--transition-base);
}

.fab-top.visible {
  opacity: 1;
  visibility: visible;
}

.fab-top:hover {
  background-color: var(--amber);
  color: var(--charcoal);
  border-color: var(--amber);
}

.cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  max-width: 480px;
  background: var(--charcoal-2);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  color: var(--white);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.cookie-banner.hidden {
  opacity: 0;
  transform: translateY(30px);
  pointer-events: none;
}

.cookie-text {
  font-size: 0.8125rem;
  color: #C0C0C0;
  line-height: 1.5;
}

.cookie-actions {
  display: flex;
  gap: 0.75rem;
}

/* Reduced Motion Preference */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}