/* =========================================================
   SSTR2026 Aerial Form - v3 final
   Aesthetic: editorial minimal × earthen warm
   With responsive hero background (PC + mobile)
   ========================================================= */

:root {
  --c-bg: #f5f1ea;
  --c-bg-alt: #ece5d8;
  --c-ink: #1a1815;
  --c-ink-soft: #514a40;
  --c-line: #c9bfae;
  --c-line-soft: #ddd2bd;
  --c-accent: #b34a1f;
  --c-accent-deep: #7a2e10;
  --c-error: #b3331f;

  --f-display: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --f-body: 'Noto Serif JP', 'Hiragino Mincho ProN', serif;
  --f-mono: 'JetBrains Mono', ui-monospace, monospace;

  --r-sm: 2px;
  --r-md: 4px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

html {
  background: var(--c-bg);
}

body {
  position: relative;
  min-height: 100vh;
  background: transparent;
}

/* ─────────────────────────────────────────
   Page-wide background image with 3-stage fade
   PC: hero-bg.jpg / Mobile: hero-bg-mobile.jpg
   ───────────────────────────────────────── */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image: url("/assets/hero-bg.jpg");
  background-size: cover;
  background-position: center 60%;
  background-repeat: no-repeat;
  background-attachment: fixed;
  pointer-events: none;
}

/* オーバーレイ:上は薄く、フォーム以降はクリーム色で覆う */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(179, 74, 31, 0.05), transparent 60%),
    radial-gradient(ellipse 100% 50% at 50% 110%, rgba(122, 46, 16, 0.04), transparent 60%),
    linear-gradient(
      to bottom,
      rgba(245, 241, 234, 0.30) 0%,
      rgba(245, 241, 234, 0.55) 30%,
      rgba(245, 241, 234, 0.92) 60%,
      rgba(245, 241, 234, 1.00) 100%
    );
  pointer-events: none;
}

@media (max-width: 768px) {
  body::before {
    background-image: url("/assets/hero-bg-mobile.jpg");
    background-position: center top;
    background-attachment: scroll; /* iOS Safari の fixed バグ回避 */
  }
  body::after {
    background:
      radial-gradient(ellipse 80% 60% at 50% -10%, rgba(179, 74, 31, 0.05), transparent 60%),
      radial-gradient(ellipse 100% 50% at 50% 110%, rgba(122, 46, 16, 0.04), transparent 60%),
      linear-gradient(
        to bottom,
        rgba(245, 241, 234, 0.40) 0%,
        rgba(245, 241, 234, 0.75) 30%,
        rgba(245, 241, 234, 0.96) 55%,
        rgba(245, 241, 234, 1.00) 80%
      );
  }
}

a { color: var(--c-accent-deep); text-underline-offset: 3px; }
a:hover { color: var(--c-accent); }

/* ---------- Header ---------- */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 40px;
  border-bottom: 1px solid var(--c-line-soft);
  flex-wrap: wrap;
  gap: 12px;
  position: relative;
  z-index: 2;
  background: rgba(245, 241, 234, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.brand-mark {
  font-weight: 600;
  color: var(--c-accent);
}

.brand-divider {
  width: 24px;
  height: 1px;
  background: var(--c-line);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.event-tag {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-ink-soft);
}

/* ---------- Language toggle ---------- */

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.4);
}

.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px 4px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--c-line);
  transition: color 0.15s;
}

.lang-btn:hover { color: var(--c-ink-soft); }

.lang-btn.is-active {
  color: var(--c-accent);
  font-weight: 600;
}

.lang-sep {
  color: var(--c-line);
  font-family: var(--f-mono);
  font-size: 11px;
}

/* ---------- Container ---------- */

.container {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px 96px;
}

/* ─────────────────────────────────────────
   Hero section — background is provided by body::before
   so hero itself just sits on top with proper spacing
   ───────────────────────────────────────── */

.hero {
  position: relative;
  margin: 0 0 80px;
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--c-line-soft);
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-ink);
  font-weight: 500;
}

.meta-line {
  flex: 1;
  height: 1px;
  background: var(--c-line);
  max-width: 100px;
}

.hero-title {
  margin: 0 0 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hero-jp {
  font-family: var(--f-body);
  font-weight: 700;
  font-size: clamp(36px, 6vw, 56px);
  letter-spacing: 0.04em;
  line-height: 1.15;
}

.hero-en {
  font-family: var(--f-display);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(20px, 3vw, 28px);
  color: var(--c-accent);
  letter-spacing: 0.02em;
}

.hero-desc {
  font-size: 16px;
  color: var(--c-ink);
  margin: 0 0 32px;
  max-width: 580px;
  line-height: 1.85;
  font-weight: 400;
  text-shadow: 0 1px 2px rgba(245, 241, 234, 0.5);
}

.hero-rule {
  display: flex;
  gap: 14px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--c-ink);
  font-weight: 500;
  flex-wrap: wrap;
}

.hero-rule .dot {
  color: var(--c-accent);
  font-weight: 700;
}

/* mobile hero spacing only (background handled by body::before) */
@media (max-width: 768px) {
  .hero {
    margin: 0 0 56px;
    padding: 56px 0 40px;
  }
}

/* ---------- About section ---------- */

.about {
  width: min(880px, calc(100vw - 64px));
  margin: 0 auto 80px;
  padding: 0 0 8px;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.about-block {
  margin-bottom: 80px;
}

.about-block:last-child {
  margin-bottom: 0;
}

.about-header {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--c-ink);
}

.about-marker {
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.1em;
}

.about-header h2 {
  margin: 0;
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.45;
}

.about-body p {
  margin: 0 0 18px;
  color: var(--c-ink);
  font-size: 15px;
  line-height: 1.95;
}

.about-body p:last-child {
  margin-bottom: 0;
}

.about-item {
  margin-bottom: 36px;
}

.about-item h3 {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 12px;
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
}

.about-item h3 .num {
  flex: 0 0 auto;
  color: var(--c-accent);
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 700;
}

.about-item p {
  margin: 0 0 14px;
  padding-left: 32px;
  color: var(--c-ink);
  font-size: 14.5px;
  line-height: 1.95;
}

.about-item ul {
  margin: 0 0 14px;
  padding-left: 52px;
  color: var(--c-ink);
  font-size: 14.5px;
  line-height: 1.95;
}

.about-figure {
  margin: 36px 0;
  padding: 0;
}

.about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
  box-shadow: 0 4px 16px rgba(26, 24, 21, 0.1);
}

.about-consent {
  padding: 32px 36px;
  background: rgba(255, 255, 255, 0.6);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.about-consent .about-header {
  margin-bottom: 24px;
}

.about-consent .about-body p {
  font-size: 14px;
  line-height: 1.9;
}

.btn-scroll-to-form {
  display: block;
  margin: 32px auto 0;
  padding: 14px 36px;
  border: none;
  border-radius: var(--r-sm);
  background: var(--c-ink);
  color: #fff;
  cursor: pointer;
  font-family: var(--f-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: background-color 0.15s, box-shadow 0.15s, transform 0.1s;
}

.btn-scroll-to-form:hover {
  background: var(--c-accent);
}

.btn-scroll-to-form:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(179, 74, 31, 0.18);
}

.btn-scroll-to-form:active {
  transform: translateY(1px);
}

@media (max-width: 768px) {
  .about {
    width: 100%;
    margin-bottom: 56px;
    left: auto;
    transform: none;
  }

  .about-block {
    margin-bottom: 56px;
  }

  .about-header {
    gap: 14px;
    margin-bottom: 24px;
  }

  .about-header h2 {
    font-size: 19px;
  }

  .about-item h3 {
    font-size: 16px;
  }

  .about-item p,
  .about-item ul {
    padding-left: 0;
    font-size: 14px;
  }

  .about-item ul {
    padding-left: 20px;
  }

  .about-consent {
    padding: 24px 20px;
  }

  .btn-scroll-to-form {
    width: 100%;
    padding: 14px 20px;
  }
}

/* ---------- Fieldset ---------- */

.entry-form { display: block; }

.fs {
  margin: 0 0 56px;
  padding: 0;
  border: 0;
}

.fs legend {
  display: flex;
  align-items: baseline;
  gap: 16px;
  width: 100%;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--c-ink);
}

.fs legend .num {
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.1em;
}

.fs legend .legend-text {
  font-family: var(--f-body);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--c-ink);
}

/* ---------- Fields ---------- */

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

@media (max-width: 600px) {
  .row { grid-template-columns: 1fr; }
}

.field {
  display: flex;
  flex-direction: column;
  margin-bottom: 20px;
}

.lbl {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}

.lbl em {
  font-style: normal;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  background: var(--c-accent);
  margin-left: 8px;
  padding: 3px 8px;
  border-radius: 2px;
  letter-spacing: 0.1em;
  vertical-align: 1px;
}

.lbl .note {
  font-size: 11px;
  color: var(--c-ink-soft);
  font-weight: 400;
  margin-left: 6px;
}

.hint {
  font-size: 13px;
  color: var(--c-ink);
  margin-top: 8px;
  opacity: 0.75;
}

.hint.counter {
  text-align: right;
  font-family: var(--f-mono);
}

.cal-morning-note {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 10px 14px;
  margin-top: 14px;
  padding: 16px 18px;
  background: var(--c-bg);
  border-left: 3px solid var(--c-accent);
  border-radius: 2px;
}

.cal-morning-note__icon {
  flex-shrink: 0;
  font-size: 18px;
  line-height: 1.4;
}

.cal-morning-note__text {
  flex: 1 1 240px;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-ink);
  letter-spacing: 0.02em;
}

.cal-morning-note__link {
  display: inline-flex;
  align-items: center;
  margin-left: auto;
  padding: 6px 14px;
  background: var(--c-accent);
  color: #ffffff !important;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: 2px;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}

.cal-morning-note__link:hover {
  opacity: 0.85;
}

@media (max-width: 768px) {
  .cal-morning-note {
    padding: 14px 16px;
  }

  .cal-morning-note__text {
    flex: 1 1 100%;
    font-size: 13px;
  }

  .cal-morning-note__link {
    margin-left: 0;
    align-self: flex-start;
  }
}

input[type="text"],
input[type="tel"],
input[type="email"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 13px 16px;
  font-family: var(--f-body);
  font-size: 15px;
  color: var(--c-ink);
  background: rgba(255, 255, 255, 0.7);
  border: 1.5px solid #8a7d68;
  border-radius: var(--r-sm);
  transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s;
  box-shadow: 0 1px 2px rgba(26, 24, 21, 0.04);
}

input::placeholder, textarea::placeholder {
  color: #8a7e6a;
  font-size: 14px;
  font-weight: 400;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 3px rgba(179, 74, 31, 0.12);
}

input:invalid:not(:placeholder-shown) {
  border-color: var(--c-error);
}

textarea { resize: vertical; min-height: 120px; }

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23514a40' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* ---------- Calendar ---------- */

.calendar-field {
  margin-bottom: 28px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 4px 0 0;
}

.calendar-status {
  grid-column: 1 / -1;
  margin: 0;
}

.calendar-day {
  min-width: 0;
  padding: 14px 10px;
  background: rgba(255, 255, 255, 0.58);
  border: 1.5px solid #8a7d68;
  border-radius: 4px;
  box-shadow: 0 1px 2px rgba(26, 24, 21, 0.04);
}

.calendar-day-header {
  margin: 0 0 12px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-ink);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  letter-spacing: 0.03em;
}

.calendar-day-header .weekday {
  display: block;
  margin-top: 2px;
  color: var(--c-ink-soft);
  font-size: 12px;
  font-weight: 500;
}

.calendar-day-time-slots {
  display: grid;
  gap: 6px;
}

.time-slot {
  display: block;
  width: 100%;
  min-height: 38px;
  padding: 8px 6px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.78);
  color: var(--c-ink);
  font-family: var(--f-mono);
  font-size: 13px;
  line-height: 1.4;
  text-align: center;
  transition: background-color 0.15s, border-color 0.15s, box-shadow 0.15s, color 0.15s;
}

button.time-slot {
  cursor: pointer;
}

button.time-slot:hover {
  background: rgba(179, 74, 31, 0.08);
  border-color: var(--c-accent);
}

button.time-slot:focus-visible {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(179, 74, 31, 0.18);
}

.time-slot.selected {
  background: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
  font-weight: 700;
}

.time-slot.booked {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #e8e3d8;
  color: #72695b;
  border-color: #d4cab7;
  cursor: not-allowed;
}

@media (max-width: 768px) {
  .calendar-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .calendar-day {
    padding: 12px;
  }

  .calendar-day-header {
    text-align: left;
  }

  .calendar-day-header .weekday {
    display: inline;
    margin: 0 0 0 4px;
  }

  .calendar-day-time-slots {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- Price block ---------- */

.price-block .price-summary {
  background: var(--c-bg-alt);
  border-left: 2px solid var(--c-accent);
  padding: 20px 24px;
  margin-bottom: 20px;
}

.price-summary dl {
  margin: 0;
  display: grid;
  gap: 14px;
}

.price-summary dl > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  align-items: start;
}

.price-summary dt {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-ink);
  letter-spacing: 0.05em;
}

.price-summary dd {
  margin: 0;
  font-size: 14px;
  color: var(--c-ink-soft);
  line-height: 1.7;
}

@media (max-width: 600px) {
  .price-summary dl > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

/* ---------- Privacy block ---------- */

.privacy-block .privacy-summary {
  background: var(--c-bg-alt);
  border-left: 2px solid var(--c-accent);
  padding: 16px 20px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--c-ink-soft);
}

.privacy-summary p { margin: 0; }

.checkbox-field {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  cursor: pointer;
  padding: 10px 0;
}

.checkbox-field input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--c-accent);
  cursor: pointer;
}

/* ---------- Submit ---------- */

.submit-area {
  margin-top: 64px;
  text-align: center;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 40px;
  background: var(--c-ink);
  color: var(--c-bg);
  border: none;
  border-radius: var(--r-sm);
  font-family: var(--f-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

.btn-submit:hover:not(:disabled) {
  background: var(--c-accent-deep);
}

.btn-submit:active:not(:disabled) {
  transform: translateY(1px);
}

.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-arrow {
  font-family: var(--f-display);
  font-size: 18px;
  transition: transform 0.2s;
}

.btn-submit:hover:not(:disabled) .btn-arrow {
  transform: translateX(4px);
}

.submit-note {
  margin-top: 16px;
  font-size: 12px;
  color: var(--c-ink-soft);
}

/* ---------- Error ---------- */

.form-error {
  margin-top: 24px;
  padding: 16px 20px;
  background: #fdf3ef;
  border-left: 2px solid var(--c-error);
  color: var(--c-error);
  font-size: 14px;
}

/* ---------- Inquiry section ---------- */

.inquiry-section {
  width: min(880px, calc(100vw - 64px));
  margin: 24px auto 0;
  padding: 80px 0 60px;
  border-top: 1px solid var(--c-line);
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.inquiry-inner {
  padding: 40px 36px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: var(--r-md);
}

.inquiry-header {
  margin-bottom: 32px;
}

.inquiry-marker {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--c-accent);
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.inquiry-header h2 {
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--c-ink);
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.inquiry-header p {
  margin: 0 0 8px;
  color: var(--c-ink);
  font-size: 14.5px;
  line-height: 1.85;
}

.inquiry-header p.hint {
  color: var(--c-ink-soft);
  font-size: 13px;
}

.inquiry-form .inq-field {
  margin-bottom: 22px;
}

.inquiry-form .inq-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 22px;
}

.inquiry-form .inq-row .inq-field {
  margin-bottom: 0;
}

.inquiry-form .lbl {
  display: block;
  margin-bottom: 6px;
  color: var(--c-ink);
  font-size: 14px;
  font-weight: 700;
}

.inquiry-form .lbl .optional {
  margin-left: 4px;
  color: var(--c-ink-soft);
  font-size: 12px;
  font-weight: 500;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.8);
  border: 1.5px solid var(--c-line);
  border-radius: var(--r-sm);
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: 14.5px;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(179, 74, 31, 0.12);
}

.inquiry-form select {
  appearance: none;
  padding-right: 36px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--c-ink) 50%),
    linear-gradient(135deg, var(--c-ink) 50%, transparent 50%);
  background-position: calc(100% - 18px) center, calc(100% - 13px) center;
  background-repeat: no-repeat;
  background-size: 5px 5px, 5px 5px;
}

.inquiry-form textarea {
  min-height: 140px;
  resize: vertical;
}

.inquiry-form .hint.counter {
  display: block;
  margin-top: 4px;
  color: var(--c-ink-soft);
  font-size: 12px;
  text-align: right;
}

.inq-submit {
  display: block;
  margin: 28px auto 0;
  padding: 14px 48px;
  background: var(--c-ink);
  border: none;
  border-radius: var(--r-sm);
  color: #fff;
  cursor: pointer;
  font-family: var(--f-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: background-color 0.15s, box-shadow 0.15s;
}

.inq-submit:hover:not(:disabled) {
  background: var(--c-accent);
}

.inq-submit:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(179, 74, 31, 0.18);
}

.inq-submit:disabled {
  background: var(--c-line);
  cursor: not-allowed;
}

@media (max-width: 768px) {
  .inquiry-section {
    width: 100%;
    margin-top: 0;
    padding: 60px 0 40px;
    left: auto;
    transform: none;
  }

  .inquiry-inner {
    padding: 28px 20px;
  }

  .inquiry-header h2 {
    font-size: 19px;
  }

  .inquiry-form .inq-row {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .inq-submit {
    width: 100%;
    padding: 14px 24px;
  }
}

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

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px 40px;
  border-top: 1px solid var(--c-line-soft);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-ink-soft);
  background: rgba(245, 241, 234, 0.95);
  position: relative;
  z-index: 2;
}

.foot-sub {
  margin-top: 4px;
  color: var(--c-line);
}

@media (max-width: 600px) {
  .site-header, .site-footer { padding: 16px 20px; }
  .container { padding: 0 20px 64px; }
  .fs { margin-bottom: 40px; }
  .header-right { gap: 12px; }
  .event-tag { display: none; }
}

/* ---------- Thanks page ---------- */

.thanks-wrap {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
  padding: 120px 32px 96px;
  text-align: center;
}

.thanks-mark {
  font-family: var(--f-display);
  font-size: 48px;
  color: var(--c-accent);
  margin-bottom: 24px;
  font-style: italic;
}

.thanks-title {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 24px;
  letter-spacing: 0.04em;
}

.thanks-body {
  color: var(--c-ink-soft);
  margin-bottom: 48px;
}

.thanks-divider {
  width: 80px;
  height: 1px;
  background: var(--c-line);
  margin: 0 auto 32px;
}

.thanks-back {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

/* ---------- Privacy page ---------- */

.privacy-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 32px 96px;
}

.privacy-wrap h1 {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 12px;
  letter-spacing: 0.04em;
}

.privacy-wrap h2 {
  font-size: 18px;
  margin: 40px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--c-line-soft);
  letter-spacing: 0.04em;
}

.privacy-wrap h2 .num {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--c-accent);
  margin-right: 12px;
}

.privacy-wrap p, .privacy-wrap li {
  font-size: 15px;
  color: var(--c-ink-soft);
  line-height: 1.85;
}

.privacy-wrap ul { padding-left: 20px; }

.privacy-meta {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--c-ink-soft);
  margin-bottom: 40px;
}

/* ---------- i18n: hide opposite language ---------- */

html[lang="en"] [data-only="ja"] { display: none !important; }
html[lang="ja"] [data-only="en"] { display: none !important; }

/* ---------- Instagram sticky banner ---------- */

.instagram-sticky {
  position: fixed;
  z-index: 1000;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-decoration: none;
  background: linear-gradient(135deg, #833ab4 0%, #fd1d1d 50%, #fcb045 100%);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.instagram-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.instagram-icon svg {
  display: block;
}

@media (min-width: 769px) {
  .instagram-sticky {
    right: 24px;
    bottom: 24px;
    width: 64px;
    height: 64px;
    flex-direction: column;
    gap: 3px;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  }

  .instagram-sticky:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.28);
  }

  .instagram-icon svg {
    width: 26px;
    height: 26px;
  }

  .instagram-label-full,
  .instagram-arrow {
    display: none;
  }

  .instagram-label-short {
    display: block;
    font-size: 10px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0;
  }
}

@media (max-width: 768px) {
  body {
    padding-bottom: 52px;
  }

  .instagram-sticky {
    right: 0;
    bottom: 0;
    left: 0;
    width: 100vw;
    height: 52px;
    display: grid;
    grid-template-columns: 24px minmax(0, 1fr) 24px;
    gap: 12px;
    padding: 0 20px;
    box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.15);
  }

  .instagram-icon svg {
    width: 22px;
    height: 22px;
  }

  .instagram-label-full {
    display: block;
    min-width: 0;
    font-size: 13.5px;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: 0;
    text-align: center;
  }

  .instagram-label-short {
    display: none;
  }

  .instagram-arrow {
    position: fixed;
    right: 20px;
    bottom: 18px;
    font-size: 16px;
    line-height: 1;
    text-align: right;
  }
}