/* ── VARIABLES ── */
:root {
  --ink: #0a0c10;
  --ink2: #0d1221;
  --sky: #0057FF;
  --sky-light: #3d80ff;
  --gold: #C8A84B;
  --gold-light: #e8c96a;
  --cream: #F7F4EE;
  --mist: #e8eaf0;
  --white: #ffffff;
  --success: #22c55e;
  --error: #ef4444;
  --warn: #f59e0b;
  --glass: rgba(255,255,255,0.07);
  --glass-border: rgba(255,255,255,0.12);
  --radius: 14px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-dark: 0 20px 60px rgba(0,0,0,0.35);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'DM Sans', sans-serif; background: var(--ink); color: var(--white); overflow-x: hidden; line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1,h2,h3,h4 { font-family: 'Playfair Display', serif; line-height: 1.15; }

/* ── NOISE ── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 9999; opacity: 0.3;
}

/* ── NAV ── */
#main-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.1rem 5vw;
  background: rgba(10,12,16,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: padding 0.3s;
}
.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem; font-weight: 900;
  text-decoration: none; color: var(--white); letter-spacing: -0.02em; white-space: nowrap;
}
.nav-logo span { color: var(--gold); }
.nav-links { display: flex; gap: 1.8rem; list-style: none; }
.nav-links a {
  color: rgba(255,255,255,0.6); text-decoration: none;
  font-size: 0.85rem; font-weight: 500; letter-spacing: 0.03em; text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-actions { display: flex; align-items: center; gap: 0.8rem; }
.nav-user { font-size: 0.85rem; color: rgba(255,255,255,0.5); }
.nav-link-btn {
  color: rgba(255,255,255,0.7); text-decoration: none;
  font-size: 0.85rem; font-weight: 500; padding: 0.45rem 1rem;
  border: 1px solid rgba(255,255,255,0.15); border-radius: 50px;
  transition: all 0.2s;
}
.nav-link-btn:hover { border-color: rgba(255,255,255,0.4); color: var(--white); }
.nav-cta {
  background: var(--gold); color: var(--ink); text-decoration: none;
  padding: 0.5rem 1.3rem; border-radius: 50px; font-weight: 700;
  font-size: 0.85rem; transition: all 0.2s;
}
.nav-cta:hover { background: var(--gold-light); transform: translateY(-1px); }

/* ── FLASH ── */
.flash {
  position: fixed; top: 72px; left: 50%; transform: translateX(-50%);
  z-index: 300; padding: 1rem 2rem; border-radius: 50px;
  display: flex; align-items: center; gap: 1rem;
  font-size: 0.9rem; font-weight: 500;
  box-shadow: var(--shadow-dark);
  animation: slideDown 0.3s ease;
  max-width: 90vw;
}
.flash button { background: none; border: none; cursor: pointer; opacity: 0.6; color: inherit; font-size: 1rem; }
.flash-success { background: var(--success); color: white; }
.flash-error { background: var(--error); color: white; }
.flash-info { background: var(--sky); color: white; }
@keyframes slideDown { from { top: 60px; opacity: 0; } to { top: 72px; opacity: 1; } }

/* ── BUTTONS ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; font-family: 'DM Sans', sans-serif; cursor: pointer; transition: all 0.25s; text-decoration: none; border: none; font-weight: 600; }
.btn-primary { background: var(--gold); color: var(--ink); padding: 0.85rem 2rem; border-radius: 50px; font-size: 1rem; }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(200,168,75,0.3); }
.btn-blue { background: var(--sky); color: white; padding: 0.85rem 2rem; border-radius: 50px; font-size: 1rem; }
.btn-blue:hover { background: var(--sky-light); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0,87,255,0.3); }
.btn-ghost { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.2); padding: 0.85rem 2rem; border-radius: 50px; font-size: 1rem; }
.btn-ghost:hover { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.05); }
.btn-sm { padding: 0.55rem 1.2rem; font-size: 0.875rem; }
.btn-full { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ── FORMS ── */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-label { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.4); }
.form-input, .form-select {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px; color: var(--white); font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem; padding: 0.85rem 1rem; outline: none; transition: border-color 0.2s, background 0.2s;
  width: 100%;
}
.form-input:focus, .form-select:focus { border-color: var(--sky); background: rgba(0,87,255,0.05); }
.form-input::placeholder { color: rgba(255,255,255,0.25); }
.form-select option { background: #0d1221; color: white; }
.form-error { font-size: 0.8rem; color: var(--error); }
.form-help { font-size: 0.8rem; color: rgba(255,255,255,0.35); }

/* Light form variant */
.light-form .form-label { color: rgba(0,0,0,0.5); }
.light-form .form-input, .light-form .form-select {
  background: #f8f9fc; border-color: #e2e8f0; color: #0a0c10;
}
.light-form .form-input:focus, .light-form .form-select:focus { border-color: var(--sky); background: #eef3ff; }
.light-form .form-input::placeholder { color: #aab0be; }
.light-form .form-select option { background: white; color: #0a0c10; }

/* ── PAGE WRAPPER ── */
.page-wrap { padding-top: 72px; min-height: 100vh; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 5vw; }
.section { padding: 5rem 5vw; }
.section-tag {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--gold); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 1rem;
}
.section-tag::before { content: '—'; }

/* ── CARD ── */
.card {
  background: rgba(255,255,255,0.035); border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius); padding: 2rem;
}
.card-light { background: white; border: 1px solid #e8eaf0; border-radius: var(--radius); padding: 2rem; color: var(--ink); box-shadow: var(--shadow); }
.card-dark { background: rgba(10,12,16,0.95); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: 2rem; }

/* ── BADGES ── */
.badge { display: inline-flex; align-items: center; padding: 0.25rem 0.75rem; border-radius: 50px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em; }
.badge-gold { background: rgba(200,168,75,0.15); border: 1px solid rgba(200,168,75,0.3); color: var(--gold); }
.badge-blue { background: rgba(0,87,255,0.15); border: 1px solid rgba(0,87,255,0.3); color: var(--sky-light); }
.badge-green { background: rgba(34,197,94,0.15); border: 1px solid rgba(34,197,94,0.3); color: var(--success); }
.badge-red { background: rgba(239,68,68,0.15); border: 1px solid rgba(239,68,68,0.3); color: var(--error); }

/* ── AUTH PAGES ── */
.auth-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 6rem 5vw 3rem;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,87,255,0.12), transparent 70%),
              linear-gradient(180deg, #0a0c10, #0d1221);
}
.auth-card {
  background: rgba(13,18,33,0.95); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 24px; padding: 3rem; width: 100%; max-width: 460px;
  box-shadow: var(--shadow-dark); backdrop-filter: blur(20px);
}
.auth-title { font-size: 2rem; font-weight: 900; margin-bottom: 0.4rem; }
.auth-sub { color: rgba(255,255,255,0.45); font-size: 0.95rem; margin-bottom: 2.5rem; }
.auth-form { display: flex; flex-direction: column; gap: 1.2rem; }
.auth-footer-text { text-align: center; margin-top: 1.5rem; font-size: 0.9rem; color: rgba(255,255,255,0.4); }
.auth-footer-text a { color: var(--gold); text-decoration: none; font-weight: 600; }
.auth-footer-text a:hover { text-decoration: underline; }
.divider { display: flex; align-items: center; gap: 1rem; color: rgba(255,255,255,0.2); font-size: 0.85rem; margin: 0.5rem 0; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: rgba(255,255,255,0.08); }

/* ── SEARCH PAGE ── */
.search-hero {
  background: linear-gradient(160deg, #0a0c10 0%, #071430 100%);
  padding: 8rem 5vw 3rem;
}
.search-card {
  background: rgba(13,18,33,0.97); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px; padding: 2.5rem;
  backdrop-filter: blur(20px); box-shadow: var(--shadow-dark);
  max-width: 1000px; margin: 0 auto;
}
.search-tabs { display: flex; gap: 0.4rem; margin-bottom: 2rem; flex-wrap: wrap; }
.tab { padding: 0.5rem 1.2rem; border-radius: 50px; font-size: 0.85rem; font-weight: 500; cursor: pointer; border: 1px solid rgba(255,255,255,0.12); color: rgba(255,255,255,0.5); background: transparent; transition: all 0.2s; font-family: 'DM Sans', sans-serif; }
.tab.active { background: var(--sky); color: white; border-color: var(--sky); }
.search-fields { display: grid; gap: 1rem; }
.search-fields.oneway { grid-template-columns: 1fr 1fr 1fr 1fr auto; }
.search-fields.roundtrip { grid-template-columns: 1fr 1fr 1fr 1fr 1fr auto; }
.search-btn { background: var(--gold); color: var(--ink); border: none; cursor: pointer; padding: 0.85rem 1.8rem; border-radius: 10px; font-family: 'DM Sans', sans-serif; font-size: 1rem; font-weight: 700; white-space: nowrap; transition: all 0.2s; align-self: end; }
.search-btn:hover { background: var(--gold-light); transform: translateY(-1px); }
.search-swap { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12); border-radius: 8px; color: white; font-size: 1rem; padding: 0.5rem; cursor: pointer; transition: all 0.2s; align-self: end; margin-bottom: 0.2rem; }
.search-swap:hover { background: rgba(255,255,255,0.15); }

/* ── RESULTS ── */
.results-layout { display: grid; grid-template-columns: 280px 1fr; gap: 2rem; padding: 3rem 5vw; align-items: start; }
.filters-panel { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: var(--radius); padding: 1.5rem; position: sticky; top: 90px; }
.filter-section { margin-bottom: 2rem; }
.filter-section h4 { font-family: 'DM Sans', sans-serif; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.35); margin-bottom: 1rem; }
.filter-option { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 0.6rem; cursor: pointer; font-size: 0.9rem; }
.filter-option input[type=checkbox] { accent-color: var(--sky); width: 16px; height: 16px; }
.results-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.results-count { font-size: 1rem; color: rgba(255,255,255,0.6); }
.results-count strong { color: white; }
.sort-select { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; color: white; font-family: 'DM Sans', sans-serif; font-size: 0.875rem; padding: 0.5rem 0.9rem; cursor: pointer; }
.flight-list { display: flex; flex-direction: column; gap: 1rem; }

/* ── FLIGHT CARD ── */
.flight-card {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius); overflow: hidden;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.flight-card:hover { border-color: rgba(0,87,255,0.3); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,87,255,0.12); }
.flight-main { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto; align-items: center; gap: 1.5rem; padding: 1.5rem 2rem; }
.airline-info { display: flex; align-items: center; gap: 0.8rem; }
.airline-logo { width: 40px; height: 40px; border-radius: 8px; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.airline-name { font-weight: 600; font-size: 0.95rem; }
.flight-no { font-size: 0.8rem; color: rgba(255,255,255,0.4); }
.time-block { text-align: center; }
.time { font-family: 'Playfair Display', serif; font-size: 1.6rem; font-weight: 700; line-height: 1; }
.airport-code { font-size: 0.8rem; color: rgba(255,255,255,0.45); margin-top: 0.2rem; }
.duration-block { text-align: center; padding: 0 1rem; }
.duration-line { display: flex; align-items: center; gap: 0.5rem; color: rgba(255,255,255,0.25); font-size: 0.75rem; margin-bottom: 0.2rem; }
.duration-line::before, .duration-line::after { content: ''; flex: 1; height: 1px; background: rgba(255,255,255,0.15); }
.duration-text { font-size: 0.85rem; color: rgba(255,255,255,0.5); text-align: center; }
.price-action { text-align: right; }
.price-amount { font-family: 'Playfair Display', serif; font-size: 2rem; font-weight: 900; color: var(--gold); line-height: 1; }
.price-per { font-size: 0.75rem; color: rgba(255,255,255,0.35); }
.seats-left { font-size: 0.78rem; color: var(--error); margin-bottom: 0.5rem; }
.flight-footer { padding: 0.8rem 2rem; background: rgba(255,255,255,0.02); border-top: 1px solid rgba(255,255,255,0.05); display: flex; gap: 1.5rem; align-items: center; }
.flight-tag { font-size: 0.78rem; color: rgba(255,255,255,0.4); display: flex; align-items: center; gap: 0.3rem; }

/* ── NO RESULTS ── */
.no-results { text-align: center; padding: 5rem 2rem; color: rgba(255,255,255,0.4); }
.no-results .icon { font-size: 4rem; margin-bottom: 1rem; }
.no-results h3 { font-size: 1.5rem; margin-bottom: 0.5rem; color: rgba(255,255,255,0.7); }

/* ── BOOKING PAGE ── */
.booking-page { padding: 6rem 5vw 3rem; }
.booking-layout { display: grid; grid-template-columns: 1fr 380px; gap: 2.5rem; max-width: 1200px; margin: 0 auto; align-items: start; }
.booking-steps { display: flex; gap: 0; margin-bottom: 2.5rem; counter-reset: step; }
.booking-step {
  flex: 1; display: flex; align-items: center; gap: 0.6rem;
  padding: 1rem 1.5rem; font-size: 0.875rem; font-weight: 600;
  border-bottom: 2px solid rgba(255,255,255,0.08); color: rgba(255,255,255,0.3);
  position: relative;
}
.booking-step.active { color: var(--gold); border-bottom-color: var(--gold); }
.booking-step.done { color: var(--success); border-bottom-color: var(--success); }
.step-num { width: 24px; height: 24px; border-radius: 50%; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; font-size: 0.75rem; flex-shrink: 0; }
.booking-step.active .step-num { background: var(--gold); color: var(--ink); }
.booking-step.done .step-num { background: var(--success); color: white; }

.booking-section { margin-bottom: 2rem; }
.booking-section h3 { font-size: 1.2rem; margin-bottom: 1.2rem; padding-bottom: 0.8rem; border-bottom: 1px solid rgba(255,255,255,0.07); }
.passenger-form { background: rgba(255,255,255,0.025); border: 1px solid rgba(255,255,255,0.07); border-radius: var(--radius); padding: 1.5rem; margin-bottom: 1rem; }
.passenger-form h4 { font-size: 1rem; margin-bottom: 1.2rem; color: rgba(255,255,255,0.7); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
.form-row.three { grid-template-columns: 1fr 1fr 1fr; }

/* ── ORDER SUMMARY ── */
.order-summary { position: sticky; top: 90px; }
.summary-card { background: rgba(13,18,33,0.97); border: 1px solid rgba(255,255,255,0.1); border-radius: 20px; overflow: hidden; }
.summary-header { background: linear-gradient(135deg, #071230, #0a1a40); padding: 1.5rem; border-bottom: 1px solid rgba(255,255,255,0.08); }
.summary-header h3 { font-size: 1.1rem; margin-bottom: 0.3rem; }
.summary-route { font-size: 0.85rem; color: rgba(255,255,255,0.5); }
.summary-body { padding: 1.5rem; }
.summary-flight { display: flex; gap: 1rem; align-items: center; padding-bottom: 1.2rem; border-bottom: 1px solid rgba(255,255,255,0.06); margin-bottom: 1.2rem; }
.summary-times { flex: 1; }
.summary-time-row { display: flex; justify-content: space-between; align-items: center; font-size: 0.9rem; }
.summary-price-breakdown { display: flex; flex-direction: column; gap: 0.7rem; margin-bottom: 1.2rem; }
.price-row { display: flex; justify-content: space-between; font-size: 0.9rem; color: rgba(255,255,255,0.55); }
.price-row.total { color: white; font-weight: 700; font-size: 1.1rem; padding-top: 0.7rem; border-top: 1px solid rgba(255,255,255,0.1); }
.price-row span:last-child { font-family: 'Playfair Display', serif; }
.price-row.total span:last-child { color: var(--gold); font-size: 1.4rem; }

/* ── PAYPAL ── */
.paypal-section { padding: 1.5rem; border-top: 1px solid rgba(255,255,255,0.07); }
.paypal-section h4 { font-size: 0.9rem; margin-bottom: 1rem; color: rgba(255,255,255,0.6); }
#paypal-button-container { min-height: 50px; }
.secure-badge { display: flex; align-items: center; gap: 0.5rem; font-size: 0.78rem; color: rgba(255,255,255,0.3); justify-content: center; margin-top: 0.8rem; }

/* ── CONFIRMATION PAGE ── */
.confirmation-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 6rem 5vw; }
.confirmation-card { max-width: 700px; width: 100%; text-align: center; }
.confirm-icon { width: 80px; height: 80px; border-radius: 50%; background: rgba(34,197,94,0.15); border: 2px solid var(--success); display: flex; align-items: center; justify-content: center; font-size: 2.5rem; margin: 0 auto 1.5rem; }
.booking-ref { background: rgba(0,87,255,0.1); border: 1px solid rgba(0,87,255,0.3); border-radius: 12px; padding: 1.5rem; margin: 2rem 0; }
.booking-ref-code { font-family: monospace; font-size: 2.5rem; font-weight: 900; color: white; letter-spacing: 6px; }
.booking-ref-label { font-size: 0.8rem; color: rgba(255,255,255,0.4); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.5rem; }

/* ── DASHBOARD ── */
.dashboard-page { padding: 6rem 5vw 3rem; }
.dashboard-header { margin-bottom: 3rem; }
.dashboard-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.2rem; margin-bottom: 3rem; }
.stat-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: var(--radius); padding: 1.5rem; }
.stat-icon { font-size: 1.8rem; margin-bottom: 0.8rem; }
.stat-value { font-family: 'Playfair Display', serif; font-size: 2rem; font-weight: 900; color: var(--gold); line-height: 1; }
.stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.4); margin-top: 0.3rem; text-transform: uppercase; letter-spacing: 0.06em; }
.bookings-table { width: 100%; border-collapse: collapse; }
.bookings-table th { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.3); padding: 0.9rem 1.2rem; border-bottom: 1px solid rgba(255,255,255,0.06); text-align: left; }
.bookings-table td { padding: 1.1rem 1.2rem; border-bottom: 1px solid rgba(255,255,255,0.04); font-size: 0.9rem; vertical-align: middle; }
.bookings-table tr:hover td { background: rgba(255,255,255,0.02); }
.booking-code-cell { font-family: monospace; color: var(--gold); font-weight: 700; letter-spacing: 1px; }

/* ── FOOTER ── */
footer { background: #06080e; padding: 5rem 5vw 2.5rem; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 4rem; margin-bottom: 4rem; }
.footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.35); line-height: 1.7; margin-top: 1rem; max-width: 280px; }
.footer-col h4 { font-family: 'DM Sans', sans-serif; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.3); margin-bottom: 1.2rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.7rem; }
.footer-col a { color: rgba(255,255,255,0.45); text-decoration: none; font-size: 0.9rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--gold); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.05); flex-wrap: wrap; gap: 1rem; }
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.2); }
.social-links { display: flex; gap: 0.7rem; }
.social-link { width: 34px; height: 34px; border-radius: 7px; border: 1px solid rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; font-size: 0.85rem; text-decoration: none; color: rgba(255,255,255,0.4); transition: all 0.2s; }
.social-link:hover { border-color: var(--gold); color: var(--gold); }

/* ── REVEAL ── */
.reveal { opacity: 0; transform: translateY(35px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ── LOADER ── */
.spinner { width: 20px; height: 20px; border: 2px solid rgba(255,255,255,0.3); border-top-color: white; border-radius: 50%; animation: spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .results-layout { grid-template-columns: 1fr; }
  .filters-panel { display: none; }
  .booking-layout { grid-template-columns: 1fr; }
  .order-summary { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
}
@media (max-width: 768px) {
  .search-fields.oneway, .search-fields.roundtrip { grid-template-columns: 1fr 1fr; }
  .search-btn { grid-column: 1 / -1; }
  .flight-main { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .nav-links { display: none; }
  .form-row, .form-row.three { grid-template-columns: 1fr; }
}
@media (max-width: 500px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .search-fields.oneway, .search-fields.roundtrip { grid-template-columns: 1fr; }
  .booking-steps { overflow-x: auto; }
}