/* ============================================================
   Lets Fly Travel — Design System (Light Theme)
   Brand: Orange #EF6603 + Clean White/Light Gray
   ============================================================ */

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

/* ─── CSS Variables ────────────────────────────────────────── */
:root {
  /* Brand Colors */
  --clr-primary:       #EF6603;
  --clr-primary-light: #FF8534;
  --clr-primary-dark:  #D45700;
  --clr-primary-50:    #FFF4EC;
  --clr-primary-100:   #FFE4CC;
  --clr-primary-200:   #FFC599;

  /* Light Theme Backgrounds */
  --clr-bg:            #F8F9FC;
  --clr-bg-alt:        #FFFFFF;
  --clr-bg-subtle:     #F1F3F8;
  --clr-card:          #FFFFFF;
  --clr-card-hover:    #FAFBFF;

  /* Borders */
  --clr-border:        #E8EAEF;
  --clr-border-light:  #F0F2F7;

  /* Text */
  --clr-text-primary:  #0F172A;
  --clr-text-secondary:#4B5563;
  --clr-text-muted:    #9CA3AF;
  --clr-text-inverse:  #FFFFFF;

  /* Accent Blue (for secondary badges) */
  --clr-accent:        #3B82F6;

  /* Shadows */
  --shadow-sm:   0 1px 4px rgba(15,23,42,0.06);
  --shadow-md:   0 4px 16px rgba(15,23,42,0.08);
  --shadow-lg:   0 8px 32px rgba(15,23,42,0.10);
  --shadow-xl:   0 16px 56px rgba(15,23,42,0.12);
  --shadow-glow: 0 4px 24px rgba(239,102,3,0.20);

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Radius */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-2xl: 32px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ─── Typography ────────────────────────────────────────────── */
.font-jakarta  { font-family: var(--font-heading); }
.font-inter    { font-family: var(--font-body); }

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.2;
  color: var(--clr-text-primary);
}

/* ─── Hero Section ──────────────────────────────────────────── */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/hero-bg.png');
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  will-change: transform;
  animation: heroZoom 12s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1.00); }
  to   { transform: scale(1.06); }
}

/* Dark gradient overlay for text readability */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10,15,30,0.72) 0%,
    rgba(20,30,60,0.50) 50%,
    rgba(239,102,3,0.12) 100%
  );
}

/* Subtle animated shimmer strip at bottom of hero */
.hero-shimmer {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--clr-bg) 0%, transparent 100%);
  z-index: 2;
}

/* ─── Navigation ─────────────────────────────────────────────── */
.nav-wrapper {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav-wrapper.scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-wrapper.scrolled .nav-link { color: var(--clr-text-primary); }
.nav-wrapper.scrolled .nav-brand { color: var(--clr-text-primary); }

/* ─── Buttons ────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--clr-primary);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: background var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--clr-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 28px;
  background: transparent;
  color: var(--clr-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: var(--radius-lg);
  border: 2px solid var(--clr-primary);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}
.btn-outline:hover {
  background: var(--clr-primary);
  color: #fff;
}

/* ─── Search Form (Glass on Hero, White on Page) ─────────────── */
.search-box {
  background: rgba(255,255,255,0.10);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: 0 8px 48px rgba(0,0,0,0.30);
}

.search-box-solid {
  background: #fff;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-xl);
}

.search-input-group {
  position: relative;
}

.search-input {
  width: 100%;
  padding: 14px 16px 14px 48px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-md);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: border-color var(--transition-base), background var(--transition-base);
  outline: none;
}

.search-input::placeholder { color: rgba(255,255,255,0.55); }
.search-input:focus {
  border-color: var(--clr-primary);
  background: rgba(255,255,255,0.18);
}

.search-input-solid {
  width: 100%;
  padding: 13px 16px 13px 46px;
  background: var(--clr-bg-subtle);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  transition: border-color var(--transition-base);
  outline: none;
}
.search-input-solid:focus { border-color: var(--clr-primary); }

/* ─── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  overflow: hidden;
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--clr-primary-100);
}

/* Flight result card */
.flight-card {
  background: var(--clr-card);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}
.flight-card:hover {
  border-color: var(--clr-primary);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

/* Destination image card */
.dest-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.dest-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms ease;
}
.dest-card:hover img { transform: scale(1.08); }
.dest-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 60%);
  transition: opacity var(--transition-base);
}

/* ─── Badge / Chip ───────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 99px;
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: var(--font-heading);
}
.badge-orange {
  background: var(--clr-primary-50);
  color: var(--clr-primary-dark);
  border: 1px solid var(--clr-primary-200);
}
.badge-green {
  background: #ECFDF5;
  color: #059669;
  border: 1px solid #A7F3D0;
}
.badge-blue {
  background: #EFF6FF;
  color: #2563EB;
  border: 1px solid #BFDBFE;
}

/* ─── Section Heading ────────────────────────────────────────── */
.section-label {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-primary);
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--clr-text-primary);
  line-height: 1.15;
}
.section-desc {
  color: var(--clr-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 520px;
}

/* ─── Trust Strip ────────────────────────────────────────────── */
.trust-strip {
  background: #fff;
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
}

.trust-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--clr-primary-50);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ─── Steps / How It Works ───────────────────────────────────── */
.step-number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: var(--shadow-glow);
}

/* ─── Stats Bar ──────────────────────────────────────────────── */
.stat-item {
  text-align: center;
  padding: 32px 16px;
}
.stat-num {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 900;
  color: var(--clr-primary);
  line-height: 1;
}
.stat-label {
  color: var(--clr-text-secondary);
  font-size: 0.9375rem;
  margin-top: 6px;
}

/* ─── Testimonial Card ───────────────────────────────────────── */
.testimonial-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

/* ─── Footer ─────────────────────────────────────────────────── */
.footer-main {
  background: #0F172A;
  color: #CBD5E1;
}
.footer-bottom {
  background: #080D1A;
  color: #64748B;
}
.footer-link {
  color: #94A3B8;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}
.footer-link:hover { color: var(--clr-primary); }

/* ─── Utility: Orange Gradient Text ─────────────────────────── */
.text-gradient {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Divider ────────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--clr-border); }

/* ─── Scroll-reveal Base ─────────────────────────────────────── */
[data-aos] { will-change: transform, opacity; }

/* ─── Custom Scrollbar ───────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-primary-200); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-primary); }

/* ─── Selection ──────────────────────────────────────────────── */
::selection {
  background: var(--clr-primary-100);
  color: var(--clr-primary-dark);
}

/* ─── Focus Visible ──────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 3px;
}

/* ─── Floating Particles (Hero Ambience) ─────────────────────── */
.hero-particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  pointer-events: none;
  animation: floatUp linear infinite;
}

@keyframes floatUp {
  0%   { transform: translateY(100px) scale(0.6); opacity: 0; }
  20%  { opacity: 1; }
  80%  { opacity: 0.8; }
  100% { transform: translateY(-120px) scale(1.1); opacity: 0; }
}

/* ─── Trip Type Toggle ────────────────────────────────────────── */
.trip-toggle-btn {
  padding: 7px 18px;
  border-radius: 99px;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-heading);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: rgba(255,255,255,0.70);
  background: transparent;
}
.trip-toggle-btn.active {
  background: var(--clr-primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(239,102,3,0.45);
}

/* ─── Responsive Tweaks ──────────────────────────────────────── */
@media (max-width: 768px) {
  .hero-section { min-height: 90vh; }
  .search-box { padding: 20px 16px; }
}