/* ==========================================================================
   外浦リゾートハウス 涛(Tõ) ― Base Stylesheet
   Palette: White × Turquoise Blue / Modern & Luxury
   ========================================================================== */

:root {
  /* --- Colors --- */
  --color-white: #ffffff;
  --color-bg: #fbfdfd;
  --color-ink: #17302d;
  --color-ink-soft: #4c6461;
  --color-turquoise: #1b9c9c;
  --color-turquoise-deep: #0d6e6e;
  --color-turquoise-pale: #e5f5f4;
  --color-turquoise-mist: #f2f9f9;
  --color-border: #e1eceb;

  /* --- Type --- */
  --font-serif-jp: "Noto Serif JP", serif;
  --font-sans-jp: "Noto Sans JP", sans-serif;
  --font-display-en: "Cormorant Garamond", serif;

  /* --- Layout --- */
  --max-width: 1180px;
  --header-height: 84px;
  --header-height-scrolled: 66px;

  /* --- Motion --- */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans-jp);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.9;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-serif-jp);
  font-weight: 600;
  letter-spacing: 0.02em;
}

p {
  margin: 0;
}

svg {
  display: block;
}

/* ---------- Layout Helpers ---------- */
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 120px 32px;
}

.section-eyebrow {
  display: block;
  font-family: var(--font-display-en);
  font-style: italic;
  font-size: 1rem;
  letter-spacing: 0.28em;
  color: var(--color-turquoise);
  margin-bottom: 18px;
  text-align: center;
}

.section-eyebrow-light {
  color: #bdeeee;
}

.section-title {
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  text-align: center;
  color: var(--color-ink);
}

.section-title-light {
  color: var(--color-white);
}

.section-lead {
  max-width: 560px;
  margin: 22px auto 0;
  text-align: center;
  color: var(--color-ink-soft);
  font-size: 0.98rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 38px;
  border-radius: 2px;
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  border: 1px solid transparent;
  transition: background var(--ease) 0.3s, color var(--ease) 0.3s, border-color var(--ease) 0.3s, transform var(--ease) 0.3s;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-turquoise);
  color: var(--color-white);
  border-color: var(--color-turquoise);
}

.btn-primary:hover {
  background: var(--color-turquoise-deep);
  border-color: var(--color-turquoise-deep);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.btn-outline:hover {
  background: var(--color-ink);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-large {
  padding: 20px 52px;
  font-size: 1rem;
}

.btn-small {
  padding: 12px 26px;
  font-size: 0.82rem;
  margin-top: 24px;
}

.btn-icon {
  width: 20px;
  height: 20px;
  display: inline-flex;
}

.btn-icon svg {
  width: 100%;
  height: 100%;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--ease) 0.4s, height var(--ease) 0.4s, box-shadow var(--ease) 0.4s;
}

.site-header.is-scrolled {
  height: var(--header-height-scrolled);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 24px rgba(23, 48, 45, 0.06);
}

.header-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--color-white);
  transition: color var(--ease) 0.4s;
}

.is-scrolled .logo {
  color: var(--color-ink);
}

.logo-jp {
  font-family: var(--font-serif-jp);
  font-size: 1.6rem;
  font-weight: 700;
}

.logo-en {
  font-family: var(--font-display-en);
  font-style: italic;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--color-turquoise);
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 44px;
}

.main-nav a {
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  color: var(--color-white);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--ease) 0.4s;
}

.is-scrolled .main-nav a {
  color: var(--color-ink);
}

.main-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--ease) 0.3s;
}

.main-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px;
  border: 1px solid currentColor;
  border-radius: 2px;
}

.nav-cta:hover {
  background: var(--color-turquoise);
  border-color: var(--color-turquoise);
  color: var(--color-white) !important;
}

.nav-lang {
  padding: 6px 12px;
  border: 1px solid currentColor;
  border-radius: 20px;
  font-family: var(--font-display-en);
  font-style: italic;
  letter-spacing: 0.06em;
}

.nav-toggle {
  display: none;
  width: 36px;
  height: 28px;
  flex-direction: column;
  justify-content: space-between;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-white);
  transition: background var(--ease) 0.3s, transform var(--ease) 0.3s, opacity var(--ease) 0.3s;
}

.is-scrolled .nav-toggle span,
.nav-open .nav-toggle span {
  background: var(--color-ink);
}

.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(13px) rotate(45deg);
}

.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-13px) rotate(-45deg);
}

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

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  isolation: isolate;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-image {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, rgba(11, 60, 58, 0.35) 0%, rgba(18, 90, 92, 0.2) 45%, rgba(31, 130, 128, 0.35) 100%),
    url("../images/exterior-dusk.png") center 30% / cover no-repeat;
}

.hero-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(9, 38, 36, 0.35), rgba(9, 38, 36, 0.08) 45%, rgba(9, 38, 36, 0.28));
}

.hero-wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  line-height: 0;
}

.hero-wave svg {
  width: 100%;
  height: 90px;
}

.hero-wave path {
  fill: var(--color-bg);
}

.hero-content {
  position: relative;
  text-align: center;
  color: var(--color-white);
  padding: 0 24px;
  max-width: 780px;
}

.hero-eyebrow {
  font-family: var(--font-display-en);
  font-style: italic;
  font-size: 1rem;
  letter-spacing: 0.4em;
  margin: 0 0 26px;
  color: rgba(255, 255, 255, 0.85);
}

.hero-title {
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  line-height: 1.5;
  color: var(--color-white);
}

.hero-title-en {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--font-display-en);
  font-size: 1.1em;
  letter-spacing: 0.06em;
}

.hero-title-en em {
  font-style: italic;
  color: #c9f3ef;
}

.hero-lead {
  margin: 26px 0 44px;
  font-size: 1.02rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.92);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-actions .btn-outline {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.7);
}

.hero-actions .btn-outline:hover {
  background: var(--color-white);
  color: var(--color-ink);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
}

.scroll-indicator span {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--color-white);
  animation: scrollDown 1.8s var(--ease) infinite;
}

@keyframes scrollDown {
  0% { opacity: 1; transform: translateY(0); }
  70% { opacity: 0; transform: translateY(14px); }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ==========================================================================
   Concept
   ========================================================================== */

.concept-grid {
  margin-top: 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.concept-media {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 30px 60px -20px rgba(15, 60, 58, 0.28);
}

.concept-text p {
  color: var(--color-ink-soft);
  font-size: 0.98rem;
  margin-bottom: 22px;
}

.concept-points {
  margin-top: 36px;
  border-top: 1px solid var(--color-border);
}

.concept-points li {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-serif-jp);
  font-size: 1rem;
  color: var(--color-ink);
}

.point-num {
  font-family: var(--font-display-en);
  font-style: italic;
  color: var(--color-turquoise);
  font-size: 1.1rem;
  min-width: 32px;
}

/* ==========================================================================
   Stay / Accommodation
   ========================================================================== */

.stay {
  background: var(--color-turquoise-mist);
}

.stay-grid {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.stay-card {
  background: var(--color-white);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 20px 44px -24px rgba(15, 60, 58, 0.22);
  transition: transform var(--ease) 0.4s, box-shadow var(--ease) 0.4s;
}

.stay-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 54px -22px rgba(15, 60, 58, 0.3);
}

.stay-card-media {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.stay-amenities {
  margin-top: 56px;
  padding: 40px;
  background: var(--color-white);
  border-radius: 4px;
  box-shadow: 0 20px 44px -24px rgba(15, 60, 58, 0.22);
}

.stay-amenities-title {
  margin: 0 0 32px;
  font-size: 1.1rem;
  text-align: center;
}

.amenity-groups {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px 48px;
}

.amenity-group h4 {
  margin: 0 0 14px;
  font-family: var(--font-serif-jp);
  font-size: 0.92rem;
  color: var(--color-turquoise-deep);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 10px;
}

.amenity-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.amenity-list li {
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--color-turquoise-deep);
  background: var(--color-turquoise-pale);
  padding: 9px 18px;
  border-radius: 20px;
}

.stay-floorplan {
  margin-top: 32px;
  padding: 40px;
  background: var(--color-white);
  border-radius: 4px;
  box-shadow: 0 20px 44px -24px rgba(15, 60, 58, 0.22);
}

.stay-floorplan img {
  width: 100%;
  height: auto;
  display: block;
}

.stay-card-body {
  padding: 30px 32px 34px;
}

.stay-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.stay-card-desc {
  color: var(--color-ink-soft);
  font-size: 0.92rem;
  margin-bottom: 20px;
}

.stay-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.stay-card-meta li {
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-turquoise-deep);
  background: var(--color-turquoise-pale);
  padding: 6px 14px;
  border-radius: 20px;
}

/* ==========================================================================
   Access
   ========================================================================== */

.access-grid {
  margin-top: 64px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.access-row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.access-row:first-child {
  border-top: 1px solid var(--color-border);
}

.access-row dt {
  font-family: var(--font-serif-jp);
  font-size: 0.85rem;
  color: var(--color-turquoise-deep);
}

.access-row dd {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-ink-soft);
}

.access-map {
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 20px 44px -24px rgba(15, 60, 58, 0.25);
  background: var(--color-turquoise-pale);
}

.access-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
  filter: grayscale(0.15) saturate(1.1);
}

.access-map img {
  width: 100%;
  height: auto;
}

/* ==========================================================================
   Reviews
   ========================================================================== */

.review-badges {
  margin-top: 48px;
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.review-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-width: 220px;
  padding: 28px 40px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: 0 20px 44px -28px rgba(15, 60, 58, 0.25);
  transition: transform var(--ease) 0.3s, box-shadow var(--ease) 0.3s, border-color var(--ease) 0.3s;
}

.review-badge:hover {
  transform: translateY(-4px);
  border-color: var(--color-turquoise);
  box-shadow: 0 28px 54px -26px rgba(15, 60, 58, 0.32);
}

.review-badge-platform {
  font-family: var(--font-serif-jp);
  font-size: 1.05rem;
  color: var(--color-ink);
}

.review-badge-label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--color-turquoise-deep);
}

/* ==========================================================================
   Reserve CTA
   ========================================================================== */

.reserve {
  background: linear-gradient(150deg, #0d6e6e 0%, #12898c 50%, #1b9c9c 100%);
  position: relative;
  overflow: hidden;
}

.reserve::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(255, 255, 255, 0.14), transparent 60%);
}

.reserve-inner {
  position: relative;
  text-align: center;
}

.reserve-lead {
  display: block;
  max-width: 520px;
  margin: 26px auto 44px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.96rem;
}

.gcal-embed {
  max-width: 640px;
  margin: 0 auto 44px;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 20px 44px -24px rgba(9, 38, 36, 0.5);
}

.gcal-embed iframe {
  display: block;
  width: 100%;
  aspect-ratio: 800 / 600;
  height: auto;
}

.price-note {
  max-width: 480px;
  margin: 0 auto 36px;
  padding: 0;
  list-style: none;
  text-align: center;
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
}

.price-note li {
  position: relative;
  margin-bottom: 8px;
}

.price-note li:last-child {
  margin-bottom: 0;
}

.reserve-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.reserve .btn-primary {
  background: var(--color-white);
  color: var(--color-turquoise-deep);
  border-color: var(--color-white);
}

.reserve .btn-primary:hover {
  background: var(--color-turquoise-pale);
  border-color: var(--color-turquoise-pale);
}

.reserve .btn-outline {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.7);
}

.reserve .btn-outline:hover {
  background: var(--color-white);
  color: var(--color-turquoise-deep);
}

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

.site-footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.75);
  padding: 72px 32px 28px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-brand {
  color: var(--color-white);
}

.footer-brand .logo-jp {
  font-size: 1.5rem;
}

.footer-brand p {
  margin-top: 10px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-contact p {
  font-size: 0.86rem;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.72);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 0.86rem;
  align-items: flex-start;
}

.footer-nav a {
  transition: color var(--ease) 0.3s;
}

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

.footer-copy {
  max-width: var(--max-width);
  margin: 24px auto 0;
  text-align: center;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.45);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 960px) {
  .section-inner {
    padding: 96px 28px;
  }

  .concept-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .concept-media {
    aspect-ratio: 16 / 10;
  }

  .access-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .stay-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 72px;
    --header-height-scrolled: 60px;
  }

  .main-nav {
    position: fixed;
    inset: 0;
    z-index: 105;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity var(--ease) 0.35s, visibility var(--ease) 0.35s, transform var(--ease) 0.35s;
  }

  .nav-open .main-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-nav ul {
    flex-direction: column;
    gap: 36px;
  }

  .main-nav a {
    font-size: 1.1rem;
    color: var(--color-ink) !important;
  }

  .nav-cta {
    padding: 14px 34px;
  }

  .nav-toggle {
    display: flex;
  }

  .section-inner {
    padding: 76px 22px;
  }

  .hero-actions,
  .reserve-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn,
  .reserve-actions .btn {
    width: 100%;
  }

  .access-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .gcal-embed {
    max-width: 100%;
  }

  .amenity-groups {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .stay-amenities {
    padding: 28px 22px;
  }
}