/* === リセット & ベース === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-black: #0a0a0a;
  --color-dark: #1a1a1a;
  --color-grey-dark: #444;
  --color-grey: #777;
  --color-grey-light: #aaa;
  --color-border: #e5e5e5;
  --color-bg: #f7f7f7;
  --color-bg-warm: #fafaf8;
  --color-white: #ffffff;
  --color-red: #ED1C24;
  --color-red-dark: #c8151c;
  --color-blue: #2B5EB4;
  --color-blue-dark: #1e4a8f;
  --font-en: "Inter", sans-serif;
  --font-jp: "Noto Sans JP", "Hiragino Sans", sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.06);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-jp);
  color: var(--color-dark);
  background: var(--color-white);
  line-height: 1.8;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
}

/* === セクションヘッダー === */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: 12px;
}

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-black);
  letter-spacing: 1px;
}

.section-title::after {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background: var(--color-red);
  margin: 20px auto 0;
}

.section-desc {
  color: var(--color-grey);
  margin-top: 16px;
  font-size: 0.9rem;
}

/* === ボタン === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 40px;
  border: none;
  font-family: var(--font-jp);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 1px;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  background: var(--color-red-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(237, 28, 36, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--color-blue);
  border: 1px solid var(--color-blue);
}

.btn-ghost:hover {
  background: var(--color-blue);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(43, 94, 180, 0.3);
}

.btn-submit {
  background: var(--color-black);
  color: var(--color-white);
  width: 100%;
  padding: 18px;
  font-size: 0.9rem;
  letter-spacing: 2px;
}

.btn-submit:hover {
  background: var(--color-blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(43, 94, 180, 0.3);
}

.btn-submit svg {
  transition: transform 0.3s;
}

.btn-submit:hover svg {
  transform: translateX(4px);
}

/* === ヘッダー === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: all 0.4s ease;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-black);
  letter-spacing: 6px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  font-family: var(--font-en);
  color: var(--color-blue);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--color-blue-dark);
}

.nav-cta {
  background: var(--color-blue);
  color: var(--color-white) !important;
  padding: 10px 24px;
  transition: background 0.3s, color 0.3s !important;
}

.nav-cta:hover {
  background: var(--color-blue-dark);
}

/* ハンバーガー */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
  z-index: 101;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-black);
  position: absolute;
  left: 0;
  transition: all 0.3s;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 9px; }
.hamburger span:nth-child(3) { top: 18px; }

.hamburger.active span:nth-child(1) {
  top: 9px;
  transform: rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  top: 9px;
  transform: rotate(-45deg);
}

/* === ヒーロー === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--color-white);
  color: var(--color-dark);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 0 24px;
}

.hero-logo {
  max-width: 320px;
  margin: 0 auto 32px;
}

.hero-tagline {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 6px;
  color: var(--color-grey);
  margin-bottom: 48px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
}

.hero-scroll a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-grey);
  transition: color 0.3s;
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero-scroll a:hover {
  color: var(--color-blue);
}

.hero-scroll span {
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 3px;
  text-transform: uppercase;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* === お店について === */
.about {
  padding: 120px 0;
  background: var(--color-blue);
  position: relative;
}

.about .section-label {
  color: rgba(255, 255, 255, 0.5);
}

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

.about .section-title::after {
  background: rgba(255, 255, 255, 0.4);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-card {
  padding: 48px 32px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.4s ease;
  position: relative;
}

.about-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.about-number {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.1);
  line-height: 1;
  margin-bottom: 24px;
}

.about-card:hover .about-number {
  color: rgba(255, 255, 255, 0.2);
}

.about-card h3 {
  margin-bottom: 16px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: 1px;
}

.about-card p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  line-height: 1.9;
}

/* === 予約フォーム === */
.reservation {
  padding: 120px 0;
  background: var(--color-bg-warm);
}

.reservation-form {
  max-width: 680px;
  margin: 0 auto;
  background: var(--color-white);
  padding: 56px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.78rem;
  letter-spacing: 1px;
  color: var(--color-grey-dark);
}

.required {
  color: var(--color-red);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: 0;
  font-size: 0.95rem;
  font-family: var(--font-jp);
  transition: border-color 0.3s, box-shadow 0.3s;
  background: var(--color-white);
  color: var(--color-dark);
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23777' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(43, 94, 180, 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-grey-light);
}

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

/* === モーダル === */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal[hidden] {
  display: none;
}

.modal-content {
  background: var(--color-white);
  padding: 64px 56px;
  text-align: center;
  max-width: 440px;
  width: 90%;
  animation: modalIn 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-blue);
  color: var(--color-white);
  margin: 0 auto 28px;
}

.modal-content h3 {
  margin-bottom: 16px;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 1px;
}

.modal-content p {
  color: var(--color-grey);
  margin-bottom: 36px;
  line-height: 2;
  font-size: 0.9rem;
}

/* === 予約一覧 === */
.admin {
  padding: 100px 0 120px;
  background: var(--color-white);
}

.reservation-list {
  max-width: 680px;
  margin: 0 auto;
}

.reservation-item {
  background: var(--color-bg);
  padding: 24px 28px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-left: 3px solid var(--color-blue);
  transition: all 0.3s;
}

.reservation-item:hover {
  transform: translateX(4px);
}

.reservation-item-info h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
  font-weight: 600;
}

.reservation-item-info p {
  font-size: 0.8rem;
  color: var(--color-grey);
}

.btn-cancel {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-grey);
  padding: 8px 20px;
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-en);
  cursor: pointer;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all 0.3s;
}

.btn-cancel:hover {
  background: var(--color-red);
  border-color: var(--color-red);
  color: var(--color-white);
}

.empty-message {
  text-align: center;
  color: var(--color-grey-light);
  padding: 64px;
  font-size: 0.9rem;
  border: 1px dashed var(--color-border);
}

/* === フッター === */
.footer {
  background: var(--color-black);
  color: rgba(255, 255, 255, 0.6);
  padding: 80px 0 32px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  margin-bottom: 20px;
  display: block;
  color: var(--color-white);
}

.footer-address {
  font-size: 0.85rem;
  line-height: 1.9;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer h4 {
  font-family: var(--font-en);
  color: var(--color-white);
  margin-bottom: 16px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.footer p, .footer li {
  font-size: 0.85rem;
  line-height: 2;
}

.footer li a {
  transition: color 0.3s;
}

.footer li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  padding-top: 32px;
  text-align: center;
  font-family: var(--font-en);
  font-size: 0.7rem;
  opacity: 0.4;
  letter-spacing: 1px;
}

/* === トップへ戻るボタン === */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-black);
  color: var(--color-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  z-index: 99;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-blue);
  transform: translateY(-4px);
}

/* === スクロールアニメーション === */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

/* === レスポンシブ === */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-black);
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    transition: right 0.4s ease;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 0.9rem;
  }

  .nav-cta {
    margin-top: 16px;
  }

  .hero-logo {
    max-width: 200px;
  }

  .hero-tagline {
    font-size: 0.65rem;
    letter-spacing: 4px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .reservation-form {
    padding: 36px 24px;
  }

  .footer-top {
    flex-direction: column;
    gap: 40px;
  }

  .footer-links {
    flex-direction: column;
    gap: 32px;
  }

  .reservation-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .hero-scroll {
    bottom: 15%;
  }
}