/* BizTrip — Airy Corporate Travel Theme */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sky: #87ceeb;
  --sky-light: #b8e2f8;
  --sky-dark: #5ba3c9;
  --navy: #1a3a52;
  --navy-light: #2c5f7c;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-500: #64748b;
  --gray-700: #334155;
  --accent: #0ea5e9;
  --shadow: 0 4px 24px rgba(26, 58, 82, 0.08);
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --transition: 0.25s ease;
  --hero-overlay: rgba(26, 58, 82, 0.55);
}

html { scroll-behavior: smooth; font-size: 16px; }
body.theme-biztrip {
  font-family: var(--font);
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--sky-dark); }
ul { list-style: none; }
h1, h2, h3, h4 { color: var(--navy); line-height: 1.3; font-weight: 700; }

.container { width: min(1120px, 92vw); margin: 0 auto; }

/* Skip link */
.skip-link {
  position: absolute; top: -100%; left: 1rem; z-index: 9999;
  background: var(--navy); color: var(--white); padding: 0.75rem 1.25rem;
  border-radius: 6px; font-weight: 600;
}
.skip-link:focus { top: 1rem; outline: 2px solid var(--sky); }

/* Header — minimal airy */
.header {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  border-bottom: 1px solid rgba(135,206,235,0.3);
}
.header.is-scrolled { box-shadow: var(--shadow); background: var(--white); }
.header__inner { display: flex; align-items: center; justify-content: space-between; padding: 0.85rem 0; }
.logo { display: flex; align-items: center; gap: 0.5rem; font-size: 1.25rem; font-weight: 800; color: var(--navy); }
.logo__icon {
  width: 38px; height: 38px; border: 2px solid var(--sky);
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 0.8rem; font-weight: 800;
}
.nav__list { display: flex; gap: 1.75rem; }
.nav__link { color: var(--gray-500); font-size: 0.9rem; font-weight: 500; }
.nav__link:hover { color: var(--navy); }
.header__actions { display: flex; align-items: center; gap: 0.65rem; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.menu-toggle__bar { width: 22px; height: 2px; background: var(--navy); border-radius: 1px; }
.mobile-nav { display: none; background: var(--gray-50); padding: 1rem; border-bottom: 1px solid var(--gray-100); }
.mobile-nav.is-open { display: block; }
.mobile-nav__list { display: flex; flex-direction: column; gap: 0.5rem; }
.mobile-nav__link { color: var(--gray-700); padding: 0.5rem; display: block; }
.mobile-nav__actions { margin-top: 1rem; display: flex; gap: 0.5rem; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.6rem 1.3rem; font-weight: 600; font-size: 0.9rem;
  border-radius: 8px; cursor: pointer; border: 2px solid transparent; transition: all var(--transition);
}
.btn--primary { background: var(--accent); color: var(--white); }
.btn--primary:hover { background: var(--sky-dark); }
.btn--outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.7); }
.btn--outline:hover { background: rgba(255,255,255,0.12); }
.btn--outline-dark { color: var(--navy); border-color: var(--sky); }
.btn--outline-dark:hover { background: var(--gray-50); }
.btn--lg { padding: 0.85rem 1.7rem; font-size: 1rem; }

/* Hero with background image */
.hero {
  position: relative; min-height: 85vh; display: flex; align-items: center;
  padding: 8rem 0 5rem;
  background-image: linear-gradient(var(--hero-overlay), var(--hero-overlay)), url('../images/hero.jpg');
  background-size: cover; background-position: center; background-repeat: no-repeat;
  color: var(--white);
}
.hero::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 80px;
  background: linear-gradient(to top, var(--white), transparent);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero__content { max-width: 640px; }
.hero__badge {
  display: inline-block; background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px); padding: 0.35rem 1rem; border-radius: 999px;
  font-size: 0.78rem; letter-spacing: 0.05em; margin-bottom: 1.25rem;
  border: 1px solid rgba(255,255,255,0.25);
}
.hero h1 { color: var(--white); font-size: clamp(2rem, 4vw, 2.75rem); margin-bottom: 1rem; font-weight: 800; }
.hero__subtitle { font-size: 1.1rem; opacity: 0.92; margin-bottom: 1.75rem; line-height: 1.7; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2rem; }
.hero__trust { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.hero__trust-item { display: flex; align-items: center; gap: 0.5rem; font-size: 0.88rem; opacity: 0.9; }
.hero__trust-icon { width: 20px; height: 20px; stroke: var(--white); }

/* Line SVG icons */
.icon-line { width: 32px; height: 32px; stroke: var(--accent); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }

/* Sections with sky gradient bands */
.section { padding: 5rem 0; }
.section--sky { background: linear-gradient(180deg, var(--white) 0%, var(--sky-light) 50%, var(--white) 100%); }
.section--alt { background: var(--gray-50); }
.section__header { text-align: center; max-width: 640px; margin: 0 auto 3rem; }
.section__label { color: var(--accent); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.section__header h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); margin: 0.5rem 0 0.75rem; }
.section__desc { color: var(--gray-500); }

/* Trust */
.trust__grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 2.5rem; align-items: start; }
.trust__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.trust__stat { background: var(--white); padding: 1.35rem; border-radius: 12px; text-align: center; box-shadow: var(--shadow); }
.trust__stat-value { font-size: 2rem; font-weight: 800; color: var(--accent); }
.trust__stat-label { font-size: 0.85rem; color: var(--gray-500); }
.trust__placeholder { font-size: 0.72rem; color: var(--sky-dark); font-style: italic; margin-top: 0.25rem; }
.usecase-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.usecase-card { border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); background: var(--white); }
.usecase-card img { aspect-ratio: 3/2; object-fit: cover; width: 100%; }
.usecase-card figcaption { padding: 0.65rem; font-size: 0.85rem; font-weight: 600; text-align: center; color: var(--navy); }
.trust__review { background: var(--white); padding: 1.2rem; border-radius: 12px; margin-bottom: 0.85rem; box-shadow: var(--shadow); }
.trust__review-text { font-style: italic; color: var(--gray-500); font-size: 0.92rem; }
.trust__review-meta { font-size: 0.82rem; color: var(--accent); margin-top: 0.35rem; }

/* Features horizontal flex-scroll carousel */
.features-carousel-wrapper { position: relative; margin: 0 -1rem; }
.features-carousel {
  display: flex; gap: 1.25rem; overflow-x: auto; scroll-snap-type: x mandatory;
  padding: 1rem 1rem 1.5rem; -webkit-overflow-scrolling: touch;
  scrollbar-width: thin; scrollbar-color: var(--sky) var(--gray-100);
}
.features-carousel::-webkit-scrollbar { height: 6px; }
.features-carousel::-webkit-scrollbar-track { background: var(--gray-100); border-radius: 3px; }
.features-carousel::-webkit-scrollbar-thumb { background: var(--sky); border-radius: 3px; }
.feature-slide {
  flex: 0 0 min(320px, 85vw); scroll-snap-align: start;
  background: var(--white); border-radius: 16px; padding: 1.75rem;
  box-shadow: var(--shadow); border: 1px solid var(--gray-100);
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-slide:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(26,58,82,0.12); }
.feature-slide__icon { margin-bottom: 1rem; }
.feature-slide__img { border-radius: 10px; margin-bottom: 1rem; aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.feature-slide__title { font-size: 1.05rem; margin-bottom: 0.45rem; }
.feature-slide__desc { font-size: 0.9rem; color: var(--gray-500); }
.carousel-hint { text-align: center; font-size: 0.8rem; color: var(--gray-500); margin-top: 0.5rem; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.step { text-align: center; padding: 1.5rem; }
.step__number {
  width: 44px; height: 44px; margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--sky), var(--accent));
  color: var(--white); border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-weight: 800;
}
.step__title { font-size: 1.02rem; margin-bottom: 0.4rem; }
.step__desc { font-size: 0.88rem; color: var(--gray-500); }

/* Benefits */
.benefits__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; max-width: 880px; margin: 0 auto; }
.benefit-item { display: flex; gap: 0.85rem; padding: 1.2rem; background: var(--white); border-radius: 12px; box-shadow: var(--shadow); }
.benefit-item__icon { flex-shrink: 0; }
.benefit-item__title { font-size: 0.98rem; margin-bottom: 0.3rem; }
.benefit-item__desc { font-size: 0.88rem; color: var(--gray-500); }

/* Comparison */
.comparison-table-wrapper { overflow-x: auto; border-radius: 12px; box-shadow: var(--shadow); }
.comparison-table { width: 100%; border-collapse: collapse; background: var(--white); font-size: 0.9rem; }
.comparison-table th, .comparison-table td { padding: 1rem; border-bottom: 1px solid var(--gray-100); text-align: left; }
.comparison-table thead th { background: var(--navy); color: var(--white); }
.comparison-table .col-highlight { background: rgba(135,206,235,0.15); font-weight: 600; }
.comparison-note { font-size: 0.85rem; color: var(--gray-500); margin-top: 1rem; font-style: italic; }

/* FAQ */
.faq__list { max-width: 760px; margin: 0 auto; }
.faq__item { background: var(--white); border-radius: 12px; margin-bottom: 0.6rem; overflow: hidden; box-shadow: 0 1px 6px rgba(0,0,0,0.04); border: 1px solid var(--gray-100); }
.faq__question { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 1.1rem 1.25rem; background: none; border: none; cursor: pointer; font-size: 0.98rem; font-weight: 600; color: var(--navy); text-align: left; }
.faq__question:hover { color: var(--accent); }
.faq__icon { width: 20px; height: 20px; transition: transform var(--transition); flex-shrink: 0; stroke: var(--accent); }
.faq__item.is-open .faq__icon { transform: rotate(180deg); }
.faq__answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq__item.is-open .faq__answer { max-height: 500px; }
.faq__answer p { padding: 0 1.25rem 1.1rem; color: var(--gray-500); font-size: 0.92rem; }

/* About */
.about__grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 2.5rem; align-items: start; }
.about__figure { border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); margin-bottom: 1rem; }
.about__caption { font-size: 0.8rem; color: var(--gray-500); margin-top: 0.45rem; }
.about__content p { margin-bottom: 0.85rem; color: var(--gray-500); }
.about__value { background: var(--white); padding: 1.15rem; border-radius: 12px; margin-bottom: 0.85rem; box-shadow: var(--shadow); }
.about__value h3 { font-size: 0.98rem; color: var(--accent); margin-bottom: 0.3rem; display: flex; align-items: center; gap: 0.5rem; }
.about__value p { font-size: 0.88rem; color: var(--gray-500); }

/* CTA */
.cta-banner {
  background: linear-gradient(135deg, var(--sky) 0%, var(--accent) 100%);
  color: var(--white); text-align: center; padding: 4rem 0;
}
.cta-banner h2 { color: var(--white); font-size: clamp(1.5rem, 2.5vw, 2rem); margin-bottom: 0.75rem; }
.cta-banner__desc { opacity: 0.92; margin-bottom: 1.5rem; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-banner .btn--primary { background: var(--white); color: var(--navy); }
.cta-banner .btn--primary:hover { background: var(--gray-50); }

/* Contact */
.contact__grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 2.5rem; }
.contact__item { margin-bottom: 1.25rem; }
.contact__item h3 { font-size: 0.92rem; color: var(--accent); margin-bottom: 0.3rem; }
.contact__item p { color: var(--gray-500); font-size: 0.92rem; }
.contact-form { background: var(--white); padding: 2rem; border-radius: 16px; box-shadow: var(--shadow); border: 1px solid var(--gray-100); }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 0.3rem; color: var(--navy); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 0.7rem 0.9rem; border: 1px solid var(--gray-100);
  border-radius: 8px; font-family: inherit; font-size: 0.95rem;
  background: var(--gray-50); transition: border-color var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--sky); }
.form-group textarea { min-height: 110px; resize: vertical; }
.form-note { font-size: 0.78rem; color: var(--gray-500); margin-bottom: 1rem; }
.form-success { display: none; background: #ecfdf5; border: 1px solid #10b981; color: #065f46; padding: 1rem; border-radius: 8px; margin-bottom: 1rem; }
.form-success.is-visible { display: block; }

/* Footer */
.footer { background: var(--navy); color: rgba(255,255,255,0.75); padding: 3rem 0 1.5rem; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer .logo { color: var(--white); margin-bottom: 0.65rem; }
.footer__brand p { font-size: 0.88rem; line-height: 1.6; }
.footer__col h4 { color: var(--sky); margin-bottom: 0.65rem; font-size: 0.92rem; }
.footer__links li { margin-bottom: 0.35rem; }
.footer__links a { color: rgba(255,255,255,0.7); font-size: 0.88rem; }
.footer__links a:hover { color: var(--white); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 1.25rem; }
.footer__bottom p { font-size: 0.82rem; margin-bottom: 0.4rem; }
.footer__legal { font-size: 0.78rem; color: rgba(255,255,255,0.5); margin-top: 0.75rem; }

/* Legal pages */
.legal-page { padding: 6rem 0 4rem; }
.legal-page h1 { font-size: 1.9rem; margin-bottom: 0.5rem; }
.legal-updated { color: var(--gray-500); margin-bottom: 1.75rem; }
.legal-page h2 { font-size: 1.15rem; margin: 1.75rem 0 0.65rem; color: var(--accent); }
.legal-page p, .legal-page li { color: var(--gray-500); margin-bottom: 0.65rem; }
.legal-page ul { list-style: disc; padding-left: 1.5rem; }

/* BizTrip — Extended airy travel styling */
.hero { background-attachment: scroll; }
@media (min-width: 769px) {
  .hero { background-attachment: fixed; }
}
.features-carousel { scroll-padding-inline: 1rem; }
.feature-slide:focus-within { outline: 2px solid var(--accent); outline-offset: 4px; }
.feature-slide__icon svg { transition: stroke var(--transition); }
.feature-slide:hover .feature-slide__icon svg { stroke: var(--sky-dark); }
.carousel-hint::before, .carousel-hint::after {
  content: "—"; margin: 0 0.5rem; opacity: 0.4;
}
.trust__stat { transition: transform var(--transition), box-shadow var(--transition); }
.trust__stat:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(14,165,233,0.15); }
.usecase-card { transition: transform var(--transition); }
.usecase-card:hover { transform: translateY(-3px); }
.step { transition: transform var(--transition); }
.step:hover { transform: translateY(-2px); }
.faq__item.is-open { border-color: var(--accent); box-shadow: 0 4px 16px rgba(14,165,233,0.08); }
.comparison-table tbody tr:hover td { background: rgba(135,206,235,0.08); }
.cta-banner { position: relative; overflow: hidden; }
.cta-banner::before {
  content: ""; position: absolute; top: -50%; right: -10%; width: 300px; height: 300px;
  background: rgba(255,255,255,0.1); border-radius: 50%; pointer-events: none;
}
.contact-form .btn--primary { width: 100%; }
.header__inner { transition: padding var(--transition); }
.logo__icon { transition: border-color var(--transition), transform var(--transition); }
.logo:hover .logo__icon { border-color: var(--accent); transform: translateY(-1px); }
.form-group input:focus, .form-group textarea:focus { box-shadow: 0 0 0 3px rgba(135,206,235,0.35); }
.benefit-item { transition: transform var(--transition), box-shadow var(--transition); }
.benefit-item:hover { transform: translateX(4px); box-shadow: 0 6px 24px rgba(26,58,82,0.1); }
.about__value .icon-line { vertical-align: middle; }
.footer__col h4 { letter-spacing: 0.05em; }
.nav__link { position: relative; }
.nav__link::after {
  content: ""; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--accent); transition: width var(--transition);
}
.nav__link:hover::after { width: 100%; }
.legal-page { background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 200px); }
.mobile-nav__link:hover { color: var(--accent); }
@media (prefers-reduced-motion: reduce) {
  .hero { background-attachment: scroll !important; }
  .feature-slide:hover, .trust__stat:hover, .step:hover { transform: none; }
}
@media print {
  .hero { background: var(--navy) !important; min-height: auto; padding: 2rem 0; }
  .header, .footer, .cta-banner, .features-carousel-wrapper { display: none !important; }
  .feature-slide { break-inside: avoid; page-break-inside: avoid; }
}

/* BizTrip — Travel UI refinements */
main { padding-top: 0; }
.section:first-of-type { padding-top: 0; }
.hero__content { text-shadow: 0 1px 8px rgba(0,0,0,0.2); }
.features-carousel-wrapper { margin-bottom: 1rem; }
.feature-slide { min-height: 420px; display: flex; flex-direction: column; }
.feature-slide__desc { flex: 1; }
.trust__grid { align-items: start; }
.about__values { position: sticky; top: 100px; }
@media (max-width: 992px) { .about__values { position: static; } }
.faq__question:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.btn:focus-visible { outline: 2px solid var(--sky); outline-offset: 2px; }
.contact-form { max-width: 100%; }
.hero .btn--primary { box-shadow: 0 4px 20px rgba(0,0,0,0.2); }
.cta-banner .btn--primary { box-shadow: 0 4px 16px rgba(0,0,0,0.1); }
.section__header h2 { font-weight: 800; letter-spacing: -0.02em; }
.comparison-table th { font-weight: 700; }
.footer .logo__icon { background: rgba(255,255,255,0.1); }
.mobile-nav__actions .btn { width: 100%; }
.form-group label { color: var(--gray-700); }
.trust__review { border-top: 3px solid var(--sky); }
.benefit-item__title { font-weight: 700; color: var(--navy); }
.legal-page .container { max-width: 760px; }
.header.is-scrolled .header__inner { padding: 0.65rem 0; }

@media (max-width: 992px) {
  .trust__grid, .about__grid, .contact__grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav, .header__actions .btn { display: none; }
  .menu-toggle { display: flex; }
  .benefits__grid, .trust__stats { grid-template-columns: 1fr; }
  .usecase-gallery { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .hero { min-height: 70vh; padding: 6rem 0 3rem; }
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { width: 100%; }
  .feature-slide { flex: 0 0 min(280px, 90vw); min-height: 380px; }
  .legal-page { padding-top: 5rem; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 1.75rem; }
  .hero__trust { flex-direction: column; gap: 0.65rem; }
  .trust__stat-value { font-size: 1.6rem; }
  .contact-form { padding: 1.5rem; }
  .cta-banner { padding: 2.5rem 1rem; }
  .section { padding: 3.5rem 0; }
  .feature-slide { padding: 1.25rem; }
  .header__inner { padding: 0.75rem 0; }
}

/* BizTrip — Utility & accessibility helpers */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
[hidden] { display: none !important; }
:focus:not(:focus-visible) { outline: none; }
::selection { background: rgba(135,206,235,0.45); color: var(--navy); }
.hero .container { width: min(1120px, 90vw); }
.features-carousel-wrapper .section__header { margin-bottom: 2rem; }
.hero__badge { font-weight: 600; }
.trust__grid { gap: 2rem; }
.about__grid { gap: 2rem; }
.contact__grid { align-items: start; }
.faq__answer a { font-weight: 600; }
.footer__legal p { line-height: 1.5; }
.cta-banner .container { position: relative; z-index: 1; }
.section--sky .trust__stat { background: rgba(255,255,255,0.85); }
.benefit-item p { margin: 0; }
.comparison-table td { vertical-align: top; }
.mobile-nav__link { font-weight: 500; }
.logo span:last-child { letter-spacing: -0.02em; }
.hero__trust-item span { line-height: 1.4; }
.form-group { position: relative; }
.about__caption { font-style: italic; }
.trust__review-meta { font-weight: 500; }
.usecase-card figcaption { background: var(--white); }
.nav__list { align-items: center; }
.header { transition: background var(--transition), box-shadow var(--transition); }
.section__desc { line-height: 1.65; }
.hero__content { position: relative; z-index: 2; }
.about__content { min-width: 0; }
.trust__grid { min-width: 0; }