/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --white: #ffffff;
  --off-white: #fafaf8;
  --ink: #1a1a1a;
  --ink-soft: #333333;
  --gray: #767676;
  --line: #e5e3df;
  --footer: #3d3631;
}

html { scroll-behavior: smooth; }

body {
  font-family: "Shippori Mincho", "Noto Serif JP", "游明朝", "Yu Mincho", serif;
  background: var(--white);
  color: var(--ink);
  line-height: 2;
  font-size: 15.5px;
  font-weight: 400;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

button, input, textarea, select { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
::selection { background: rgba(26,26,26,0.15); }

/* ---------- Header ---------- */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 28px 0;
  transition: all 0.5s ease;
  background: transparent;
}
header.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 18px 0;
  border-bottom: 1px solid rgba(229,227,223,0.6);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-family: "Cormorant Garamond", serif;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--white);
  transition: color 0.5s ease;
}
header.scrolled .logo { color: var(--ink); }

nav ul {
  display: flex;
  list-style: none;
  gap: 34px;
}
nav a {
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--white);
  transition: opacity 0.3s ease, color 0.5s ease;
  position: relative;
}
header.scrolled nav a { color: var(--ink); }
nav a:hover { opacity: 0.65; }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.menu-toggle span {
  width: 22px;
  height: 1px;
  background: var(--white);
  transition: 0.3s;
}
header.scrolled .menu-toggle span { background: var(--ink); }

/* ---------- Hero ---------- */
.page-hero {
  position: relative;
  min-height: 58vh;
  width: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background: #0a0a0a;
  z-index: 1;
}
.page-hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 100px 32px 0;
  color: var(--white);
  animation: fadeUp 1.4s ease 0.3s both;
}
.page-hero-tag {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-weight: 300;
  font-size: 14px;
  letter-spacing: 0.5em;
  margin-bottom: 30px;
  opacity: 0.9;
  text-transform: uppercase;
}
.page-hero h1 {
  font-family: "Shippori Mincho", serif;
  font-weight: 400;
  font-size: clamp(32px, 5.4vw, 58px);
  letter-spacing: 0.16em;
  margin-bottom: 40px;
  text-shadow: 0 2px 30px rgba(0,0,0,0.2);
}
.page-hero-line {
  width: 50px;
  height: 1px;
  background: rgba(255,255,255,0.7);
  margin: 0 auto 36px;
}
.page-hero-sub {
  font-size: 15px;
  line-height: 2.2;
  letter-spacing: 0.12em;
  opacity: 0.92;
  font-weight: 300;
}
.sp-only { display: none; }

/* ---------- Intro ---------- */
.page-intro {
  padding: 110px 0 70px;
  background: var(--white);
  text-align: center;
}
.page-intro-inner {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 32px;
}
.page-intro-eyebrow,
.form-heading span,
.thanks-panel span {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.4em;
  color: var(--gray);
  margin-bottom: 22px;
  text-transform: uppercase;
}
.page-intro h2,
.form-heading h2,
.thanks-panel h2 {
  font-family: "Shippori Mincho", serif;
  font-weight: 400;
  font-size: clamp(22px, 3vw, 28px);
  letter-spacing: 0.14em;
  margin-bottom: 34px;
  line-height: 1.8;
}
.page-intro h2 span {
  font-size: 0.82em;
  letter-spacing: 0.12em;
}
.page-intro p,
.form-heading p,
.thanks-panel p {
  font-size: 16px;
  line-height: 2.45;
  color: var(--ink-soft);
  margin-bottom: 22px;
}
.page-intro p:last-child,
.form-heading p:last-child,
.thanks-panel p:last-child { margin-bottom: 0; }

/* ---------- Form Shell ---------- */
.reservation-section {
  background: var(--off-white);
  padding: 90px 0 130px;
}
.reservation-inner {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 32px;
}
.reservation-panel {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 44px;
}
.reservation-form[hidden],
.thanks-panel[hidden] {
  display: none;
}
.form-heading {
  margin-bottom: 34px;
}
.form-heading span,
.thanks-panel span {
  display: inline-block;
}

/* ---------- Inputs ---------- */
.field-group {
  border: none;
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}
.field-group label,
.field-group legend {
  color: var(--ink);
  font-size: 15px;
  letter-spacing: 0.1em;
  line-height: 1.8;
}
.required,
.optional {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.1em;
  margin-left: 8px;
  padding: 1px 8px;
  vertical-align: 0.08em;
}
.required {
  background: var(--ink);
  color: var(--white);
}
.optional {
  border: 1px solid var(--line);
  color: var(--gray);
}
input,
textarea,
select {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 0;
  color: var(--ink);
  min-height: 54px;
  padding: 14px 16px;
  width: 100%;
}
textarea {
  line-height: 1.9;
  min-height: 140px;
  resize: vertical;
}
input[type="datetime-local"] {
  min-width: 0;
}
select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: calc(100% - 22px) 23px, calc(100% - 16px) 23px;
  background-repeat: no-repeat;
  background-size: 6px 6px, 6px 6px;
}
input:focus,
textarea:focus,
select:focus {
  border-color: var(--ink);
  outline: none;
}
::placeholder {
  color: #9c9c9c;
  opacity: 1;
}
.field-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.notice-box {
  background: var(--off-white);
  border: 1px solid var(--line);
  margin-top: 4px;
  padding: 22px 24px;
}
.notice-box p {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 2;
}
.form-status {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.9;
  margin-top: 20px;
}
.form-status.is-error {
  color: #9f2d2d;
}
.form-actions {
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  margin-top: 34px;
  padding-top: 30px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-width: 220px;
  padding: 16px 32px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--white);
  font-size: 14px;
  letter-spacing: 0.14em;
  transition: all 0.3s ease;
  cursor: pointer;
}
.btn:hover {
  background: var(--white);
  color: var(--ink);
}
.btn:disabled {
  cursor: wait;
  opacity: 0.65;
}
.btn-line {
  background: transparent;
  color: var(--ink);
}
.btn-line:hover {
  background: var(--ink);
  color: var(--white);
}
.arrow {
  font-family: serif;
  font-size: 16px;
}
.thanks-panel {
  padding: 8px 0 4px;
}
.thanks-panel .btn {
  margin-top: 30px;
}

/* ---------- Closing / Footer ---------- */
.closing {
  background: var(--footer);
  color: var(--white);
  padding: 110px 0;
  text-align: center;
}
.closing-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 32px;
}
.closing-eyebrow {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  letter-spacing: 0.35em;
  color: rgba(255,255,255,0.55);
  margin-bottom: 30px;
}
.closing h2 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 400;
  letter-spacing: 0.14em;
  line-height: 2;
  margin-bottom: 34px;
}
.closing p {
  color: rgba(255,255,255,0.78);
  line-height: 2.4;
}
footer {
  background: #2f2925;
  color: var(--white);
  padding: 70px 0 30px;
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 40px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}
.footer-brand .logo {
  color: var(--white);
  display: inline-block;
  margin-bottom: 18px;
}
.footer-tag-line {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.22em;
  margin-bottom: 20px;
}
.footer-brand p,
.footer-col a {
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  line-height: 2;
}
.footer-col h4 {
  font-family: "Cormorant Garamond", serif;
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.18em;
  margin-bottom: 20px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a:hover {
  color: var(--white);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.45);
  font-family: "Cormorant Garamond", serif;
  font-size: 12px;
  letter-spacing: 0.18em;
  padding-top: 28px;
  text-align: center;
}

/* ---------- Animation ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  header {
    padding: 20px 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(14px);
  }
  body.menu-open header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .logo,
  header.scrolled .logo { color: var(--ink); }
  .menu-toggle { display: flex; z-index: 200; }
  .menu-toggle span,
  header.scrolled .menu-toggle span { background: var(--ink); }
  nav {
    position: fixed;
    inset: 0;
    background: var(--ink);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
    z-index: 150;
  }
  nav.open {
    opacity: 1;
    pointer-events: auto;
  }
  nav ul {
    flex-direction: column;
    gap: 28px;
    text-align: center;
  }
  nav a,
  header.scrolled nav a {
    color: var(--white);
    font-size: 15px;
  }
  .menu-toggle.open span { background: var(--white); }
  .menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
  .menu-toggle.open span:nth-child(2) { opacity: 0; }
  .menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

  .page-hero { min-height: 54vh; }
  .page-intro { padding: 86px 0 54px; }
  .reservation-section { padding: 64px 0 90px; }
  .reservation-inner { padding: 0 20px; }
  .reservation-panel { padding: 28px 20px; }
  .field-grid { grid-template-columns: 1fr; }
  .form-actions {
    flex-direction: column-reverse;
  }
  .btn {
    width: 100%;
  }
  .closing { padding: 90px 0; }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 480px) {
  .header-inner { padding: 0 22px; }
  .page-hero-inner { padding: 90px 22px 0; }
  .page-hero h1 {
    font-size: 31px;
    letter-spacing: 0.12em;
  }
  .sp-only { display: block; }
  .page-intro-inner,
  .closing-inner { padding: 0 22px; }
  .page-intro h2,
  .form-heading h2,
  .thanks-panel h2 {
    font-size: 22px;
  }
  .page-intro p,
  .form-heading p,
  .thanks-panel p {
    font-size: 14.5px;
    line-height: 2.25;
  }
  .field-group label,
  .field-group legend {
    font-size: 14px;
  }
  input,
  textarea,
  select {
    font-size: 16px;
  }
  .footer-inner { padding: 0 24px; }
}