:root {
  --bg: #f7fbfa;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #637083;
  --line: #d7e7e5;
  --primary: #0f766e;
  --primary-dark: #07534f;
  --tiffany: #81d8d0;
  --tiffany-soft: #e6f8f6;
  --tiffany-pale: #f2fbfa;
  --accent: #0f9f96;
  --danger: #a33b2f;
  --ok: #167c55;
  --shadow: 0 14px 36px rgba(15, 83, 79, 0.11);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Yu Gothic", "Meiryo", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px clamp(16px, 4vw, 48px);
  background: rgba(247, 251, 250, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  flex: 0 0 auto;
  font-weight: 800;
  color: var(--primary-dark);
}

.brand::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--tiffany);
  vertical-align: 1px;
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 14px;
}

main {
  padding: 32px clamp(16px, 4vw, 48px) 56px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  padding: 24px clamp(16px, 4vw, 48px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.site-footer div {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.site-footer strong {
  color: var(--primary-dark);
  font-size: 14px;
  letter-spacing: 0;
}

.site-footer strong::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--tiffany);
  vertical-align: 1px;
}

.site-footer small {
  font-size: 11px;
  letter-spacing: 0.04em;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: clamp(20px, 4vw, 44px);
  align-items: center;
  max-width: 1180px;
  margin: 0 auto 48px;
}

.hero h1 {
  margin: 10px 0 16px;
  max-width: 720px;
  font-size: clamp(34px, 4.2vw, 52px);
  line-height: 1.16;
  overflow-wrap: normal;
  word-break: keep-all;
}

.hero p {
  max-width: 680px;
  color: var(--muted);
  font-size: 16px;
  overflow-wrap: anywhere;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.notice,
.summary,
.form-panel,
.calendar-panel {
  width: 100%;
  max-width: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.notice {
  min-width: 0;
  padding: 20px;
  border-top: 4px solid var(--tiffany);
}

.notice span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  overflow-wrap: anywhere;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.section-heading h2,
.detail-title h1 {
  margin: 4px 0 0;
  line-height: 1.25;
}

.section-heading p {
  max-width: 520px;
  color: var(--muted);
  margin: 0;
  overflow-wrap: anywhere;
}

.space-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.space-card {
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(31, 41, 51, 0.08);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.space-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(15, 118, 110, 0.14);
}

.photo {
  min-height: 188px;
  aspect-ratio: 16 / 10;
  background-size: cover;
  background-position: center;
}

.space-card .body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 16px;
}

.space-card h3 {
  margin: 0 0 8px;
  font-size: 21px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.space-card .body > .muted {
  min-height: 52px;
  margin: 0;
  overflow-wrap: anywhere;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.tag,
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 9px;
  background: var(--tiffany-soft);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 700;
}

.badge.low {
  background: #fff0e8;
  color: var(--danger);
}

.price {
  margin-top: auto;
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.35;
}

.muted {
  color: var(--muted);
}

.detail {
  max-width: 1180px;
  margin: 0 auto;
  min-width: 0;
}

.back-link {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--primary);
  font-weight: 800;
}

.detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 380px);
  gap: 24px;
  align-items: start;
}

.gallery {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  grid-template-rows: repeat(3, 136px);
  gap: 10px;
  margin-top: 14px;
  min-width: 0;
}

.gallery .photo:first-child {
  grid-row: span 3;
}

.gallery .photo {
  width: 100%;
  max-width: 100%;
  min-height: 0;
  aspect-ratio: auto;
  border-radius: 8px;
}

.summary {
  position: sticky;
  top: 78px;
  padding: 20px;
}

.map-panel {
  margin-top: 18px;
}

.map-panel h2 {
  margin: 0 0 10px;
}

.map-panel iframe {
  display: block;
  width: 100%;
  height: 260px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--tiffany-pale);
}

.summary dl {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 10px 12px;
  margin: 16px 0 0;
}

.summary dt {
  color: var(--muted);
}

.summary dd {
  margin: 0;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.booking-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 400px);
  gap: 24px;
  margin-top: 28px;
  align-items: start;
}

.calendar-panel,
.form-panel {
  min-width: 0;
  padding: 18px;
}

.calendar-panel h2,
.form-panel h2 {
  margin: 0 0 12px;
}

.bookable-range {
  display: inline-flex;
  margin: 0 0 10px;
  border-radius: 999px;
  padding: 5px 10px;
  background: var(--tiffany-soft);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 800;
}

.calendar-wrap {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.month h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.calendar {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
}

.dow {
  color: var(--muted);
  text-align: center;
  font-size: 12px;
  font-weight: 800;
}

.day {
  min-height: 64px;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  text-align: left;
  cursor: pointer;
}

.day[disabled] {
  cursor: not-allowed;
  opacity: 0.55;
}

.day .num {
  display: block;
  font-weight: 800;
}

.day .state {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  line-height: 1.25;
}

.day.available .state {
  color: var(--primary);
  font-weight: 800;
}

.day.full .state,
.day.held .state,
.day.closed .state {
  color: var(--danger);
}

.day.held {
  background: #fff8e6;
}

.day.selected {
  border-color: var(--primary);
  background: var(--tiffany-soft);
  box-shadow: inset 0 0 0 2px var(--tiffany);
}

.hold-notice {
  margin: 12px 0 16px;
  padding: 12px;
  border: 1px solid #f0d58c;
  border-radius: 8px;
  background: #fff8e6;
}

.hold-notice p {
  margin: 0 0 8px;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 13px;
}

.field label,
.equip-title {
  font-weight: 800;
}

.field label {
  display: grid;
  gap: 6px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 11px;
  background: #ffffff;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: 2px solid rgba(129, 216, 208, 0.55);
  border-color: var(--tiffany);
}

.consent {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  margin: 14px 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 11px;
  background: var(--tiffany-pale);
  font-size: 14px;
  font-weight: 800;
}

.consent.is-disabled {
  color: var(--muted);
  opacity: 0.75;
}

.consent input {
  margin-top: 4px;
}

.text-link,
.consent a {
  color: var(--primary);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.terms-confirm {
  margin: 14px 0;
}

.terms-confirm .button.secondary {
  width: 100%;
}

.terms-inline {
  max-height: 260px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #ffffff;
  font-size: 13px;
  line-height: 1.65;
}

.terms-inline h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.terms-inline h1 {
  margin: 0 0 12px;
  font-size: 18px;
  line-height: 1.35;
}

.terms-inline h2 {
  margin: 16px 0 8px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  font-size: 15px;
  line-height: 1.35;
}

.terms-inline p {
  margin: 0 0 10px;
}

.terms-hint {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.equip-options {
  display: grid;
  gap: 8px;
  margin: 8px 0 14px;
}

.equip-options label {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.equip-options label.is-disabled {
  color: var(--muted);
  background: #f6f8f8;
}

.total {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-weight: 800;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  border: 0;
  border-radius: 6px;
  padding: 0 16px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

.button:hover {
  background: var(--primary-dark);
}

.form-panel .button {
  width: 100%;
}

.button.secondary {
  background: var(--tiffany-soft);
  color: var(--text);
}

.button.danger {
  background: #f8e9e6;
  color: var(--danger);
}

.button.danger:hover {
  background: #efd2cc;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.confirm-box,
.complete-box {
  display: none;
  margin-top: 16px;
  padding: 14px;
  border-radius: 8px;
  background: var(--tiffany-pale);
}

.confirm-box.is-active,
.complete-box.is-active {
  display: block;
}

.complete-page {
  max-width: 720px;
  margin: 0 auto;
}

.warning {
  margin: 12px 0;
  padding: 10px;
  border-radius: 6px;
  background: #fff0e8;
  color: var(--danger);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.terms-page {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
}

.terms-document {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  overflow-wrap: anywhere;
  line-break: anywhere;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(20px, 4vw, 42px);
  box-shadow: var(--shadow);
}

.terms-document h1 {
  margin: 6px 0 18px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.terms-document h2 {
  margin: 28px 0 10px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  font-size: 20px;
  line-height: 1.35;
}

.terms-document p,
.terms-document li {
  color: var(--text);
  overflow-wrap: anywhere;
  line-break: anywhere;
}

.terms-document ol,
.terms-document ul {
  padding-left: 1.4em;
}

.admin-page {
  max-width: 1180px;
  margin: 0 auto;
}

.admin-layout {
  display: grid;
  gap: 22px;
}

.admin-panel,
.admin-space-form,
.admin-login-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.admin-login-panel {
  max-width: 460px;
}

.admin-panel h2,
.admin-space-form h3 {
  margin-top: 0;
}

.admin-table-wrap {
  overflow-x: auto;
}

.reservation-table-wrap {
  max-height: 430px;
  overflow: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.admin-table th,
.admin-table td {
  border-bottom: 1px solid var(--line);
  padding: 10px;
  text-align: left;
  vertical-align: top;
}

.admin-space-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.admin-add-space {
  margin-bottom: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--tiffany-pale);
}

.admin-space-form {
  padding: 0;
  overflow: hidden;
}

.admin-space-form details {
  padding: 0;
}

.admin-space-form details[open] {
  padding-bottom: 18px;
}

.admin-space-form details[open] > :not(summary) {
  margin-left: 18px;
  margin-right: 18px;
}

.admin-space-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  font-weight: 800;
}

.admin-space-summary::marker {
  color: var(--primary);
}

.admin-space-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.admin-photo-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 16px;
}

.admin-photo-title {
  grid-column: 1 / -1;
  margin: 0;
  font-weight: 800;
}

.admin-photo-field {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

.admin-photo-preview {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--tiffany-pale);
  background-position: center;
  background-size: cover;
}

.admin-photo-field input {
  width: 100%;
  font-size: 12px;
}

.admin-close-form {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1.2fr auto;
  gap: 12px;
  align-items: end;
  margin-bottom: 18px;
}

.admin-close-form .button {
  min-height: 42px;
}

.text-button {
  border: 0;
  background: transparent;
  color: var(--primary);
  font-weight: 800;
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
}

.form-error {
  margin: 0 0 12px;
  color: var(--danger);
  font-weight: 800;
}

@media (max-width: 900px) {
  .hero,
  .detail-hero,
  .booking-layout,
  .calendar-wrap,
  .admin-close-form,
  .admin-space-list {
    grid-template-columns: 1fr;
  }

  .summary {
    position: static;
  }

  .space-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  main {
    padding: 22px 20px 48px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    overflow: hidden;
  }

  .site-header nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 8px 14px;
  }

  .hero {
    margin-bottom: 34px;
  }

  .hero h1 {
    font-size: 29px;
    line-height: 1.22;
    word-break: keep-all;
    overflow-wrap: anywhere;
  }

  .hero p {
    font-size: 15px;
    word-break: keep-all;
    overflow-wrap: anywhere;
  }

  .notice {
    padding: 18px;
  }

  .notice span,
  .section-heading p,
  .space-card .body > .muted {
    word-break: break-all;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .space-grid,
  .gallery {
    grid-template-columns: 1fr;
  }

  .gallery {
    grid-template-rows: repeat(4, 170px);
  }

  .gallery .photo:first-child {
    grid-row: auto;
  }

  .calendar {
    gap: 4px;
  }

  .day {
    min-height: 54px;
    padding: 5px;
  }

  .day .state {
    font-size: 11px;
  }

  .summary dl {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .summary dt {
    margin-top: 8px;
  }

  .summary dd,
  .warning,
  .calendar-panel > .muted {
    word-break: break-all;
  }

  .warning {
    font-size: 14px;
  }

  .terms-document {
    width: calc(100vw - 40px);
    max-width: calc(100vw - 40px);
    padding: 18px;
  }

  .terms-document h1 {
    font-size: 24px;
    word-break: break-all;
    overflow-wrap: anywhere;
  }

  .terms-document h2,
  .terms-document p,
  .terms-document li {
    word-break: break-all;
    overflow-wrap: anywhere;
    line-break: anywhere;
  }

}