/* ==========================================================================
   LVS AirSearch — shared base styles (variables, reset, navbar, sections, footer)
   ========================================================================== */

:root{
  /* studio (light) theme */
  --studio-1: #f3f4f5;
  --studio-2: #dadde1;
  --surface: #ffffff;
  --ink: #1e2024;
  --slate: #6b707a;
  --signal: #c6483a;
  --amber: #d6a233;
  --hairline: rgba(30,32,36,0.10);

  /* closing footer (dark) */
  --footer-bg: #15161a;
  --footer-panel: #1c1d22;
  --footer-bone: #ede9e1;
  --footer-slate: #8b8f97;

  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-data: "IBM Plex Mono", monospace;

  --nav-height: 4.5rem;
}

*{ box-sizing: border-box; }

html{
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: var(--studio-1);
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body{
  margin: 0;
  background: var(--studio-1);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

img, svg{ max-width: 100%; }

/* ---------- Navbar ---------- */

.navbar{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.navbar.is-scrolled{
  border-bottom-color: var(--hairline);
  box-shadow: 0 8px 24px rgba(30,32,36,0.06);
}

.nav-inner{
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

.nav-links{
  display: flex;
  gap: 2.1rem;
}

.nav-links a{
  position: relative;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.25rem 0;
}

.nav-links a::after{
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav-links a:hover::after,
.nav-links a.is-active::after{ transform: scaleX(1); }

.nav-toggle{
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle span{
  width: 20px;
  height: 2px;
  background: var(--ink);
  display: block;
}

@media (max-width: 760px){
  .nav-links{
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--surface);
    flex-direction: column;
    gap: 0;
    padding: 0.4rem 1.25rem 0.8rem;
    border-bottom: 1px solid var(--hairline);
    box-shadow: 0 18px 32px rgba(30,32,36,0.12);
    clip-path: inset(0 0 100% 0);
    opacity: 0;
    pointer-events: none;
    /* hidden (not just transparent) so keyboard users can't tab into a
       closed menu; the delay lets the close animation finish first */
    visibility: hidden;
    transition: clip-path 0.25s ease, opacity 0.25s ease, visibility 0s linear 0.25s;
  }
  .nav-links.is-open{
    clip-path: inset(0 0 0 0);
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transition-delay: 0s;
  }
  .nav-toggle{ display: flex; }

  /* Full-width rows: easy to hit with a thumb. */
  .nav-links a{
    padding: 1rem 0;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--hairline);
  }
  .nav-links a:last-child{ border-bottom: 0; }

  /* The active page is marked with a bar on the left instead of the
     desktop underline. */
  .nav-links a::after{ display: none; }
  .nav-links a.is-active{
    color: var(--signal);
    padding-left: 0.9rem;
    box-shadow: inset 3px 0 0 var(--signal);
  }

  /* Keep the bar solid while the menu is open so page text can't show
     through it. */
  .navbar.menu-open{
    background: var(--surface);
    border-bottom-color: var(--hairline);
  }

  /* Hamburger turns into a close (X) icon. */
  .nav-toggle span{ transition: transform 0.25s ease, opacity 0.2s ease; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-6px) rotate(-45deg); }
}

/* ---------- Shared section layout ---------- */

main{ padding-top: var(--nav-height); }

.section{ padding: 7rem 1.5rem; }
.section-inner{ max-width: 1100px; margin: 0 auto; }

.section-head{ max-width: 560px; margin-bottom: 3rem; }

.section-head h2{
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 2.7rem);
  color: var(--ink);
}

.section-head p{
  margin: 0;
  color: var(--slate);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* ---------- Page header (non-home pages) ---------- */

.page-header{
  padding: 8.5rem 1.5rem 2rem;
  background: var(--studio-2);
}

.page-header .section-inner{
  max-width: 1100px;
  margin: 0 auto;
}

.page-eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--signal);
  margin: 0 0 0.9rem;
}

.page-eyebrow::before{
  content: "";
  width: 8px;
  height: 8px;
  background: var(--signal);
  display: inline-block;
}

.page-header h1{
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 4.5vw, 3.1rem);
  color: var(--ink);
}

.page-header p{
  margin: 0;
  max-width: 60ch;
  color: var(--slate);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* ---------- Footer ---------- */

footer{
  background: var(--footer-bg);
  padding: 4.5rem 1.5rem 2.5rem;
}

.footer-inner{ max-width: 1100px; margin: 0 auto; }

.footer-top{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.8rem;
}

.footer-mark{
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--footer-bone);
}

.footer-line{
  margin: 0;
  max-width: 42ch;
  color: var(--footer-slate);
}

.footer-nav{
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
}

.footer-nav a{
  color: var(--footer-bone);
  text-decoration: none;
  font-size: 0.92rem;
}

.footer-nav a:hover{ color: var(--signal); }

.spec-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem 1rem;
  border-top: 1px solid rgba(237,233,225,0.12);
  padding-top: 1.8rem;
}

.spec-value{
  font-family: var(--font-data);
  font-weight: 500;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  color: var(--footer-bone);
}

.spec-label{
  margin-top: 0.3rem;
  color: var(--footer-slate);
  font-size: 0.85rem;
}

.footer-fine{
  margin-top: 3rem;
  color: var(--footer-slate);
  font-size: 0.8rem;
}

@media (max-width: 640px){ .spec-grid{ grid-template-columns: repeat(2, 1fr); } }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
}

/* ---------- Phones ---------- */

@media (max-width: 600px){
  .section{ padding: 3.5rem 1.25rem; }
  .section-head{ margin-bottom: 2rem; }

  .page-header{ padding: 6.5rem 1.25rem 1.75rem; }

  footer{ padding: 3rem 1.25rem 2rem; }
  .footer-top{ margin-bottom: 1.6rem; gap: 1.4rem; }
  .footer-nav{ gap: 0.4rem 1.4rem; }
  .footer-nav a{ display: inline-flex; align-items: center; min-height: 44px; }
  .footer-fine{ margin-top: 1.4rem; }
}

/* Logo link: a full-size tap target (the text alone is ~23px tall). */
.nav-logo{
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}