/* ========================================
   うなぎ処 湖月 — 浜名湖うなぎ
   ======================================== */

:root {
  --sumi: #20242b;
  --indigo: #16202c;
  --indigo-light: #23303f;
  --gold: #c39a3b;
  --gold-dark: #a87f24;
  --cream: #f7f3ea;
  --cream-dark: #efe7d6;
  --text: #3a3a3a;
  --text-light: #6b6b6b;
  --white: #ffffff;
  --red: #8c2f2f;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --shadow: 0 8px 30px rgba(22, 32, 44, 0.08);
  --radius: 10px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background-color: var(--cream);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.container-narrow {
  width: min(760px, 92%);
}

.pc-only {
  display: inline;
}
.sp-only {
  display: none;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

.site-header.is-scrolled {
  background-color: rgba(22, 32, 44, 0.96);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
  padding: 10px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--gold);
  color: var(--indigo);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.08em;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
  letter-spacing: 0.06em;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--gold);
}

.nav-cta {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid var(--gold);
  border-radius: 999px;
  color: var(--gold) !important;
}

.nav-cta:hover {
  background-color: var(--gold);
  color: var(--indigo) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  margin: 0 auto;
  background-color: var(--white);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 75% 20%, rgba(195, 154, 59, 0.22), transparent 55%),
    radial-gradient(ellipse at 15% 85%, rgba(60, 90, 120, 0.35), transparent 60%),
    linear-gradient(160deg, #1d2938 0%, #16202c 55%, #101822 100%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      -45deg,
      rgba(255, 255, 255, 0.02) 0 2px,
      transparent 2px 14px
    );
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 140px 0 120px;
}

.hero-kicker {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.35em;
  color: var(--gold);
  border: 1px solid rgba(195, 154, 59, 0.5);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 28px;
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.35;
  letter-spacing: 0.06em;
  margin-bottom: 28px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.hero-lead {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 44px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 90px;
  z-index: 1;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.08em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary {
  background-color: var(--gold);
  color: var(--indigo);
}

.btn-primary:hover {
  background-color: var(--gold-dark);
  color: var(--white);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--white);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.12);
}

.btn-block {
  width: 100%;
  margin-top: 8px;
}

/* ---------- Sections ---------- */

.section {
  padding: 96px 0;
}

.section-dark {
  background-color: var(--indigo);
  color: var(--white);
}

.section-cream {
  background-color: var(--cream-dark);
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  text-align: center;
  letter-spacing: 0.12em;
  margin-bottom: 56px;
  color: var(--indigo);
}

.section-title::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin: 16px auto 0;
  background-color: var(--gold);
}

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

.section-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
  margin: -32px 0 40px;
}

.section-dark .section-note {
  color: rgba(255, 255, 255, 0.7);
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-lead {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--indigo);
  margin-bottom: 20px;
}

.about-text p + p {
  margin-top: 16px;
}

.about-points {
  list-style: none;
  display: grid;
  gap: 24px;
}

.about-points li {
  display: flex;
  gap: 18px;
  background-color: var(--white);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
}

.point-num {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.4;
}

.about-points h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--indigo);
  margin-bottom: 4px;
}

.about-points p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ---------- Craft ---------- */

.craft-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.craft-card {
  background-color: var(--indigo-light);
  border: 1px solid rgba(195, 154, 59, 0.25);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.craft-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold);
}

.craft-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
}

.craft-card h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.craft-card p {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
}

/* ---------- Menu ---------- */

.menu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.menu-card {
  position: relative;
  background-color: var(--white);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--gold);
  transition: transform 0.25s ease;
}

.menu-card:hover {
  transform: translateY(-6px);
}

.menu-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
}

.menu-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--indigo);
  white-space: nowrap;
}

.menu-price {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--red);
  white-space: nowrap;
}

.menu-desc {
  font-size: 13.5px;
  color: var(--text-light);
  line-height: 1.8;
}

.menu-badge {
  position: absolute;
  top: -12px;
  right: 16px;
  background-color: var(--red);
  color: var(--white);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 3px 12px;
  border-radius: 999px;
}

/* ---------- Access ---------- */

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: stretch;
}

.access-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-size: 14.5px;
}

.access-table th,
.access-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--cream-dark);
  vertical-align: top;
}

.access-table tr:last-child th,
.access-table tr:last-child td {
  border-bottom: none;
}

.access-table th {
  width: 96px;
  font-family: var(--font-serif);
  color: var(--indigo);
  background-color: rgba(195, 154, 59, 0.08);
  white-space: nowrap;
}

.access-map {
  min-height: 360px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.access-map iframe {
  display: block;
  height: 100%;
  min-height: 360px;
}

/* ---------- Contact ---------- */

.contact-form {
  background-color: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px;
}

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

.form-field {
  margin-bottom: 20px;
}

.form-field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--indigo);
  margin-bottom: 6px;
}

.required {
  font-size: 11px;
  color: var(--white);
  background-color: var(--red);
  border-radius: 4px;
  padding: 1px 7px;
  margin-left: 6px;
  vertical-align: 2px;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--text);
  background-color: var(--cream);
  border: 1px solid #ddd3bd;
  border-radius: 6px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(195, 154, 59, 0.2);
}

.form-field textarea {
  resize: vertical;
}

.form-error {
  color: var(--red);
  font-size: 13.5px;
  margin-bottom: 12px;
}

.form-success {
  margin-top: 16px;
  text-align: center;
  font-size: 14.5px;
  color: #2e6b3a;
  background-color: #e6f3e9;
  border: 1px solid #b7dcc2;
  border-radius: 6px;
  padding: 12px 16px;
}

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

.site-footer {
  background-color: var(--indigo);
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 32px;
}

.footer-inner {
  display: grid;
  gap: 24px;
  justify-items: center;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.08em;
}

.footer-sub {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  font-size: 13.5px;
}

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

.footer-copy {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 20px;
  width: 100%;
}

/* ---------- Reveal animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .craft-grid,
  .menu-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid,
  .access-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 640px) {
  .pc-only {
    display: none;
  }
  .sp-only {
    display: inline;
  }

  .section {
    padding: 72px 0;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    background-color: rgba(22, 32, 44, 0.98);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }

  .site-nav a {
    font-size: 18px;
    font-family: var(--font-serif);
  }

  .hero-inner {
    padding: 120px 0 100px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 28px 22px;
  }
}

@media (max-width: 480px) {
  .craft-grid,
  .menu-grid {
    grid-template-columns: 1fr;
  }
}