/* =========================================================
   GASSAN STAGING SITE BASE
========================================================= */

:root {
  --bg: #f6f7f8;
  --bg-alt: #eef1f3;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #ffffff;
  --text: #1a2430;
  --muted: #697785;
  --line: rgba(21, 34, 48, 0.1);
  --brand: #142435;
  --brand-2: #22384f;
  --accent: #7e96ab;
  --shadow: 0 12px 40px rgba(15, 28, 40, 0.08);
  --radius: 22px;
  --radius-sm: 16px;
  --header-h: 72px;
  --wrap: min(1200px, 92vw);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, 'Hiragino Sans',
    'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

a {
  color: inherit;
  text-decoration: none;
}

body.menu-open {
  overflow: hidden;
}

.gs-wrap {
  width: var(--wrap);
  margin: 0 auto;
}

/* =========================================================
   Header
========================================================= */

.gs-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid rgba(20, 36, 53, 0.08);
}

.gs-header__inner {
  width: var(--wrap);
  min-height: var(--header-h);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.gs-logo {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}

.gs-logo__ja {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.gs-logo__en {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.gs-menuBtn {
  width: 46px;
  height: 46px;
  border: 1px solid rgba(20, 36, 53, 0.12);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 999px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0 12px;
  cursor: pointer;
}

.gs-menuBtn span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: var(--brand);
}

.gs-nav {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  background: rgba(247, 248, 250, 0.98);
  border-bottom: 1px solid rgba(20, 36, 53, 0.08);
  padding: 18px 20px 24px;
  transform: translateY(-120%);
  transition: transform 0.28s ease;
}

.gs-nav.is-open {
  transform: translateY(0);
}

.gs-nav__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.gs-nav__list a {
  display: block;
  padding: 14px 16px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(20, 36, 53, 0.07);
  font-weight: 600;
}

/* =========================================================
   Hero
========================================================= */

.gs-hero {
  position: relative;
  min-height: calc(100svh - var(--header-h));
  display: grid;
  align-items: end;
  overflow: hidden;
  background:
    linear-gradient(
      180deg,
      rgba(10, 18, 28, 0.16) 0%,
      rgba(10, 18, 28, 0.54) 100%
    ),
    linear-gradient(135deg, #5f7283 0%, #2c3b4a 45%, #16212e 100%);
}

.gs-hero__media {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at 20% 20%,
      rgba(255, 255, 255, 0.16),
      transparent 26%
    ),
    radial-gradient(
      circle at 80% 24%,
      rgba(255, 255, 255, 0.1),
      transparent 20%
    ),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(0, 0, 0, 0.08));
}

.gs-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.04) 0%,
    rgba(0, 0, 0, 0.22) 100%
  );
}

.gs-hero__inner {
  position: relative;
  z-index: 2;
  width: var(--wrap);
  margin: 0 auto;
  padding: 88px 0 56px;
  color: #fff;
}

.gs-hero__kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.22em;
  opacity: 0.82;
}

.gs-hero__title {
  margin: 0;
  font-size: clamp(34px, 8vw, 76px);
  line-height: 1.12;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.gs-hero__lead {
  width: min(640px, 100%);
  margin: 18px 0 0;
  font-size: clamp(14px, 3.7vw, 18px);
  color: rgba(255, 255, 255, 0.88);
}

.gs-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* =========================================================
   Buttons
========================================================= */

.gs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition:
    transform 0.2s ease,
    opacity 0.2s ease,
    background 0.2s ease;
}

.gs-btn:hover {
  transform: translateY(-1px);
}

.gs-btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
}

.gs-btn--ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.08);
}

/* =========================================================
   Quick
========================================================= */

.gs-quick {
  margin-top: -28px;
  position: relative;
  z-index: 10;
}

.gs-quickGrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.gs-quickCard {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(21, 34, 48, 0.08);
  border-radius: 20px;
  padding: 16px 16px 18px;
  box-shadow: var(--shadow);
}

.gs-quickCard__label {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.gs-quickCard strong {
  font-size: 16px;
}

/* =========================================================
   Sections
========================================================= */

.gs-section {
  padding: 72px 0;
}

.gs-section--alt {
  background: var(--bg-alt);
}

.gs-sectionHead {
  margin-bottom: 24px;
}

.gs-sectionHead__kicker {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

.gs-sectionHead__title {
  margin: 0;
  font-size: clamp(26px, 6vw, 42px);
  line-height: 1.2;
  letter-spacing: 0.05em;
}

/* =========================================================
   Status
========================================================= */

.gs-statusGrid {
  display: grid;
  gap: 14px;
}

.gs-statusCard {
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.gs-statusCard__label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.gs-statusCard__value {
  display: block;
  margin-top: 8px;
  font-size: 28px;
  line-height: 1.2;
  color: var(--brand);
}

.gs-statusCard__text {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* =========================================================
   Camera
========================================================= */

.gs-camera {
  display: grid;
  gap: 18px;
  align-items: stretch;
}

.gs-camera__screen {
  min-height: 240px;
  border-radius: 24px;
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.08),
      rgba(255, 255, 255, 0.02)
    ),
    linear-gradient(135deg, #526576 0%, #293948 52%, #18212d 100%);
  color: rgba(255, 255, 255, 0.85);
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: 0.18em;
  box-shadow: var(--shadow);
}

.gs-camera__body {
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(21, 34, 48, 0.08);
  border-radius: 24px;
  padding: 22px;
}

.gs-camera__text {
  margin: 0 0 18px;
  color: var(--muted);
}

/* =========================================================
   Features / Stay / Access / News
========================================================= */

.gs-featureGrid,
.gs-stayGrid,
.gs-newsList {
  display: grid;
  gap: 14px;
}

.gs-featureCard,
.gs-stayCard,
.gs-accessBox,
.gs-newsItem {
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.gs-featureCard h3,
.gs-stayCard h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

.gs-featureCard p,
.gs-stayCard p,
.gs-accessBox p {
  margin: 0;
  color: var(--muted);
}

.gs-stayCard__season {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.gs-newsItem time {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.gs-newsItem p {
  margin: 0;
}

/* =========================================================
   Footer
========================================================= */

.gs-footer {
  padding: 34px 0;
  background: #132130;
  color: rgba(255, 255, 255, 0.88);
}

.gs-footer__inner {
  width: var(--wrap);
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.gs-footer__name {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.gs-footer__sub {
  margin: 4px 0 0;
  font-size: 12px;
  opacity: 0.7;
  letter-spacing: 0.16em;
}

.gs-footer__meta p {
  margin: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.68);
}

/* =========================================================
   Desktop
========================================================= */

@media (min-width: 768px) {
  .gs-menuBtn {
    display: none;
  }

  .gs-nav {
    position: static;
    inset: auto;
    transform: none;
    transition: none;
    background: transparent;
    border: 0;
    padding: 0;
  }

  .gs-nav__list {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .gs-nav__list a {
    background: transparent;
    border: 0;
    padding: 10px 12px;
    border-radius: 999px;
    font-weight: 600;
    color: var(--text);
  }

  .gs-nav__list a:hover {
    background: rgba(20, 36, 53, 0.06);
  }

  .gs-quickGrid {
    grid-template-columns: repeat(4, 1fr);
  }

  .gs-statusGrid {
    grid-template-columns: repeat(3, 1fr);
  }

  .gs-camera {
    grid-template-columns: 1.35fr 0.85fr;
  }

  .gs-featureGrid {
    grid-template-columns: repeat(3, 1fr);
  }

  .gs-stayGrid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gs-footer__inner {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}