/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
  --color-primary: #FF6FAF;
  --color-primary-light: #FFC1E3;
  --color-primary-dark: #E8559A;
  --color-accent: #FF89C2;
  --color-bg: #FFFAFC;
  --color-bg-alt: #FFF0F5;
  --color-white: #FFFFFF;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-border: #F0D4E0;
  --color-gray-light: #F8F8F8;
  --font-ja: 'Noto Sans JP', 'Hiragino Sans', 'Meiryo', sans-serif;
  --font-en: 'Poppins', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 16px rgba(255, 111, 175, 0.10);
  --shadow-hover: 0 4px 24px rgba(255, 111, 175, 0.20);
  --max-width: 1100px;
  --section-padding: 80px 0;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-ja);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

/* ===========================
   Utility
   =========================== */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-heading {
  text-align: center;
  margin-bottom: 48px;
}

.section-heading .en {
  display: block;
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.section-heading h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
}

.section-heading h2::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  margin: 12px auto 0;
  border-radius: 2px;
}

.cta-button {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 700;
  padding: 16px 40px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(255, 111, 175, 0.3);
  text-align: center;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 111, 175, 0.4);
}

/* ===========================
   1. Header
   =========================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.site-logo small {
  display: block;
  font-family: var(--font-ja);
  font-size: 0.6rem;
  font-weight: 500;
  color: var(--color-text-light);
  letter-spacing: 0.08em;
}

/* Global Nav - Desktop */
.global-nav {
  display: none;
}

.global-nav ul {
  display: flex;
  gap: 24px;
}

.global-nav a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color 0.2s;
  white-space: nowrap;
}

.global-nav a:hover {
  color: var(--color-primary);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.4);
}

.mobile-nav-overlay.is-open {
  display: block;
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: -280px;
  z-index: 1000;
  width: 280px;
  height: 100%;
  background: var(--color-white);
  padding: 80px 24px 40px;
  transition: right 0.3s ease;
  overflow-y: auto;
}

.mobile-nav.is-open {
  right: 0;
}

.mobile-nav a {
  display: block;
  padding: 14px 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav a:hover {
  color: var(--color-primary);
}

/* ===========================
   2. Hero
   =========================== */
.hero {
  background: linear-gradient(135deg, #FFF0F5 0%, #FFE4F0 40%, #FFC1E3 100%);
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '♪';
  position: absolute;
  top: 20%;
  left: 8%;
  font-size: 3rem;
  color: rgba(255, 111, 175, 0.15);
  animation: float 4s ease-in-out infinite;
}

.hero::after {
  content: '★';
  position: absolute;
  bottom: 20%;
  right: 10%;
  font-size: 2.5rem;
  color: rgba(255, 137, 194, 0.15);
  animation: float 5s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

.hero-catch {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.4;
  margin-bottom: 8px;
}

.hero-sub {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.9;
}

.hero-sub p + p {
  margin-top: 16px;
}

/* ===========================
   3. About
   =========================== */
.about {
  padding: var(--section-padding);
}

.about-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.about-feature-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.about-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.about-feature-card .icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.about-feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.about-feature-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===========================
   4. Classes
   =========================== */
.classes {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
}

.class-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.class-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

.class-card-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  padding: 20px 24px;
}

.class-card-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.class-card-header .class-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.25);
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 20px;
  margin-top: 6px;
}

.class-card-body {
  padding: 24px;
}

.class-card-body dl {
  margin-bottom: 16px;
}

.class-card-body dt {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.class-card-body dd {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.class-card-body .class-desc {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
}

/* ===========================
   5. Price
   =========================== */
.price {
  padding: var(--section-padding);
}

.price-intro {
  text-align: center;
  font-size: 0.92rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.8;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.price-table thead th {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 14px 16px;
  text-align: left;
}

.price-table tbody td {
  padding: 14px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border);
}

.price-table tbody tr:last-child td {
  border-bottom: none;
}

.price-table tbody tr:nth-child(even) {
  background: var(--color-bg-alt);
}

.price-table .price-amount {
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 1rem;
}

.price-notes {
  max-width: 720px;
  margin: 0 auto;
}

.price-notes li {
  font-size: 0.82rem;
  color: var(--color-text-light);
  padding-left: 1.2em;
  text-indent: -1.2em;
  margin-bottom: 6px;
}

.price-notes li::before {
  content: '※ ';
  color: var(--color-primary);
}

/* ===========================
   6. Schedule
   =========================== */
.schedule {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
}

/* Studio Tabs */
.studio-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 20px;
}

.studio-tab {
  padding: 12px 32px;
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text-light);
  background: var(--color-white);
  border: 2px solid var(--color-border);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.studio-tab:first-child {
  border-radius: 8px 0 0 8px;
}

.studio-tab:last-child {
  border-radius: 0 8px 8px 0;
  border-left: none;
}

.studio-tab.is-active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  border-color: var(--color-primary);
}

.studio-tab:not(.is-active):hover {
  background: var(--color-bg-alt);
  border-color: var(--color-primary-light);
}

/* Studio Panels */
.studio-panel {
  display: none;
}

.studio-panel.is-active {
  display: block;
}

/* Timetable */
.timetable-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 24px;
}

.timetable {
  width: 100%;
  min-width: 760px;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  table-layout: fixed;
}

.timetable thead th {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 14px 8px;
  text-align: center;
  white-space: nowrap;
}

.timetable-time-header {
  width: 68px;
}

.timetable tbody td {
  padding: 4px 3px;
  border-bottom: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  text-align: center;
  vertical-align: middle;
  height: 36px;
  font-size: 0.8rem;
}

.timetable tbody td:last-child {
  border-right: none;
}

.timetable tbody tr:last-child td {
  border-bottom: none;
}

.timetable-time {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-light);
  white-space: nowrap;
  background: #FAF5F8 !important;
  border-right: 2px solid var(--color-border) !important;
  letter-spacing: -0.02em;
}

.timetable-cell {
  background: linear-gradient(135deg, #FFF0F5, #FFE8F2);
  padding: 6px 4px;
  border-left: 3px solid var(--color-primary) !important;
  border-radius: 0;
}

.timetable-lesson-time {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
  letter-spacing: -0.02em;
}

.timetable-name {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.timetable-instructor {
  display: block;
  font-size: 0.68rem;
  color: var(--color-text-light);
  margin-top: 2px;
}

.timetable-cell-offset-td {
  position: relative;
  padding: 0 !important;
  background: transparent !important;
  border-left: none !important;
}

.timetable-cell-offset-inner {
  position: absolute;
  top: 25%;
  left: 0;
  right: 0;
  bottom: -25%;
  background: linear-gradient(135deg, #FFF0F5, #FFE8F2);
  border-left: 3px solid var(--color-primary);
  border-radius: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6px 4px;
  z-index: 1;
}

.schedule-note {
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  padding: 24px;
  box-shadow: var(--shadow);
}

.schedule-note h3 {
  font-size: 0.95rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.schedule-note p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.schedule-note p + p {
  margin-top: 8px;
}

/* ===========================
   7. Instructor
   =========================== */
.instructor {
  padding: var(--section-padding);
}

.instructor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.instructor-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

.instructor-card-img {
  background: linear-gradient(135deg, var(--color-primary-light), #FFE4F0);
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--color-primary);
  overflow: hidden;
}

.instructor-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.instructor-card-body {
  padding: 24px;
}

.instructor-card-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.instructor-card-body .instructor-role {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 12px;
}

.instructor-card-body .instructor-career {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.instructor-card-body .instructor-career li {
  padding-left: 1em;
  text-indent: -1em;
  margin-bottom: 4px;
}

.instructor-card-body .instructor-career li::before {
  content: '◆ ';
  color: var(--color-primary);
}

.instructor-comment {
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.8;
  position: relative;
}

.instructor-comment::before {
  content: '💬';
  position: absolute;
  top: -10px;
  left: 16px;
  font-size: 1.2rem;
}

/* ===========================
   8. FAQ
   =========================== */
.faq {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  cursor: pointer;
}

.faq-question .q-mark {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 50%;
  font-family: var(--font-en);
}

.faq-answer {
  padding: 0 24px 20px 64px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ===========================
   9. Access
   =========================== */
.access {
  padding: var(--section-padding);
}

.access-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.access-map {
  width: 100%;
  height: 280px;
  background: var(--color-gray-light);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.access-info dl {
  margin-bottom: 20px;
}

.access-info dt {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.access-info dd {
  font-size: 0.92rem;
  color: var(--color-text);
  margin-bottom: 14px;
  line-height: 1.7;
}

.access-directions {
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
}

.access-directions h3 {
  font-size: 0.95rem;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.access-directions ol {
  padding-left: 1.5em;
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 2;
}

.access-directions ol li + li {
  margin-top: 4px;
}

/* ===========================
   10. Footer
   =========================== */
.site-footer {
  background: #2D2D2D;
  color: #CCCCCC;
  padding: 48px 0 24px;
}

.footer-inner {
  text-align: center;
}

.footer-logo {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: 4px;
}

.footer-logo small {
  display: block;
  font-family: var(--font-ja);
  font-size: 0.7rem;
  color: #999;
  font-weight: 400;
  margin-bottom: 16px;
}

.footer-nav {
  margin-bottom: 24px;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.footer-nav a {
  font-size: 0.8rem;
  color: #AAAAAA;
  transition: color 0.2s;
}

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

.footer-contact {
  margin-bottom: 20px;
  font-size: 0.82rem;
  color: #999;
}

.footer-contact a {
  color: var(--color-primary-light);
}

.footer-sns {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 24px;
}

.footer-sns a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #444;
  color: #CCC;
  font-size: 0.85rem;
  transition: background 0.2s, color 0.2s;
}

.footer-sns a:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.footer-copy {
  font-size: 0.72rem;
  color: #777;
  border-top: 1px solid #444;
  padding-top: 20px;
}

/* ===========================
   Responsive - Tablet (768px+)
   =========================== */
@media (min-width: 768px) {
  .about-features {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .access-content {
    grid-template-columns: 1fr 1fr;
  }

  .access-map {
    height: 100%;
    min-height: 320px;
  }
}

/* ===========================
   Responsive - Desktop (1024px+)
   =========================== */
@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }

  .global-nav {
    display: block;
  }

  .hero-catch {
    font-size: 2.8rem;
  }

  .about-features {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

  .section-heading h2 {
    font-size: 1.8rem;
  }
}