/* ========================================
   Base / Variables
   ======================================== */
:root {
  --white: #ffffff;
  --beige: #f7f3ee;
  --beige-light: #faf8f5;
  --blue: #c5dde8;
  --blue-light: #e8f2f7;
  --blue-accent: #7bb8d0;
  --green: #9ec5b4;
  --green-light: #e2f0e9;
  --green-accent: #6ba68e;
  --text: #2e2e2e;
  --text-light: #4a4a4a;
  --text-muted: #737373;
  --font-en: 'Cormorant Garamond', serif;
  --font-ja: 'Noto Sans JP', sans-serif;
  --danger: #e74c3c;
}

*,
*::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(--text);
  background: var(--beige-light);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   Header
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-en);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text);
}

.nav ul {
  display: flex;
  gap: 32px;
}

.nav a {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--text-light);
  transition: color 0.3s;
}

.nav a:hover,
.nav a.nav-active {
  color: var(--blue-accent);
}

/* ========================================
   Page Hero
   ======================================== */
.page-hero {
  padding: 140px 0 60px;
  text-align: center;
  background: url('images/hero-reserve.jpg') center/cover no-repeat;
  position: relative;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
}

.page-hero-inner {
  position: relative;
}

.page-hero-label {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 8px;
}

.page-hero-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--white);
}

.page-hero-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 300;
}

/* ========================================
   Steps
   ======================================== */
.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 48px 0 40px;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0.35;
  transition: opacity 0.3s;
}

.step.active {
  opacity: 1;
}

.step.done {
  opacity: 0.7;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 700;
}

.step.active .step-num {
  background: var(--blue-accent);
}

.step.done .step-num {
  background: var(--green-accent);
}

.step-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-light);
  letter-spacing: 0.02em;
}

.step-line {
  width: 40px;
  height: 2px;
  background: var(--blue);
  margin: 0 12px;
  margin-bottom: 20px;
}

/* ========================================
   Step Content
   ======================================== */
.step-content {
  display: none;
  padding-bottom: 80px;
}

.step-content.active {
  display: block;
}

.step-title {
  font-size: 1.3rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 32px;
}

.sub-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 3px solid var(--blue-accent);
}

/* ========================================
   Step 1: Type Cards
   ======================================== */
.type-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.type-card {
  background: var(--white);
  border: 2px solid transparent;
  border-radius: 16px;
  padding: 36px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: inherit;
  color: inherit;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.type-card:hover {
  border-color: var(--blue-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.type-card.selected {
  border-color: var(--blue-accent);
  background: var(--blue-light);
}

.type-icon {
  font-size: 2.5rem;
}

.type-name {
  font-size: 1.1rem;
  font-weight: 700;
}

.type-desc {
  font-size: 0.82rem;
  color: var(--text-light);
  font-weight: 300;
  line-height: 1.6;
}

.type-price {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--green-accent);
  margin-top: 4px;
}

/* Group inquiry */
.group-inquiry {
  margin-top: 40px;
  text-align: center;
  padding: 28px 24px;
  background: var(--beige-light, #faf8f5);
  border-radius: 14px;
}

.group-inquiry-text {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.group-inquiry-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
}

.group-inquiry-btn.mail {
  background: var(--blue-accent, #7ba6a0);
  color: #fff;
}

.group-inquiry-btn.mail:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

.group-inquiry-btn.tel {
  background: #fff;
  color: var(--text-main, #333);
  border: 1.5px solid #ddd;
}

.group-inquiry-btn.tel:hover {
  border-color: var(--blue-accent, #7ba6a0);
  transform: translateY(-2px);
}

.group-inquiry-icon {
  font-size: 1rem;
}

/* ========================================
   Step 2: Calendar
   ======================================== */
.calendar-wrap {
  background: var(--white);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  margin-bottom: 28px;
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
}

.cal-nav {
  width: 36px;
  height: 36px;
  border: 1px solid var(--blue);
  border-radius: 50%;
  background: none;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--blue-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  font-family: inherit;
}

.cal-nav:hover {
  background: var(--blue-accent);
  color: var(--white);
}

.cal-month {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  min-width: 180px;
  text-align: center;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.cal-day-name {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 0;
}

.cal-day-name:first-child {
  color: var(--danger);
}

.cal-day-name:last-child {
  color: var(--blue-accent);
}

.cal-day {
  text-align: center;
  padding: 10px 4px;
  font-size: 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 400;
}

.cal-day:hover:not(.disabled):not(.empty) {
  background: var(--blue-light);
}

.cal-day.selected {
  background: var(--blue-accent);
  color: var(--white);
  font-weight: 700;
}

.cal-day.today {
  border: 2px solid var(--green);
}

.cal-day.disabled {
  color: #d0d0d0;
  cursor: default;
  opacity: 0.5;
  text-decoration: line-through;
}

.cal-day.has-lesson {
  background: var(--green-light);
  font-weight: 600;
  position: relative;
}

.cal-day.has-lesson:hover {
  background: var(--green);
  color: var(--white);
}

.cal-day.has-lesson:hover .cal-month-badge {
  color: var(--white);
}

.cal-month-badge {
  display: block;
  font-size: 0.55rem;
  font-weight: 500;
  color: var(--green-accent);
  line-height: 1;
  margin-top: 2px;
}

.cal-day.selected .cal-month-badge {
  color: var(--white);
}

.cal-avail-badge {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  line-height: 1;
  margin-top: 2px;
}
.avail-available { color: #2e7d32; }
.avail-few { color: #e65100; }
.avail-full { color: #c62828; }
.cal-day.selected .cal-avail-badge { color: var(--white); }

.cal-day.empty {
  cursor: default;
}

.cal-day.other-month {
  color: #ccc;
  cursor: default;
}

.cal-day.sunday {
  color: var(--danger);
}

.cal-day.saturday {
  color: var(--blue-accent);
}

.cal-day.selected.sunday,
.cal-day.selected.saturday {
  color: var(--white);
}

/* ========================================
   Lesson Select
   ======================================== */
.lesson-select {
  margin-bottom: 28px;
}

.lesson-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.no-lesson-msg {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 20px;
}

.lesson-location-group {
  margin-bottom: 20px;
}

.lesson-location-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--blue-accent);
  padding: 6px 12px;
  background: var(--blue-light);
  border-radius: 8px;
  margin-bottom: 8px;
  display: inline-block;
}

.lesson-item {
  background: var(--white);
  border: 2px solid transparent;
  border-radius: 12px;
  padding: 16px 20px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.lesson-item:hover {
  border-color: var(--blue-accent);
}

.lesson-item.selected {
  border-color: var(--blue-accent);
  background: var(--blue-light);
}

.lesson-item-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lesson-item-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.lesson-item-detail {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.lesson-item-time {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--blue-accent);
}

/* ========================================
   Time Select (Rental)
   ======================================== */
.time-select {
  margin-bottom: 28px;
}

.time-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.time-field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-light);
}

.time-field select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 10px;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--white);
  color: var(--text);
  appearance: none;
  cursor: pointer;
}

.time-field select:focus {
  outline: none;
  border-color: var(--blue-accent);
}

.rental-summary {
  background: var(--green-light);
  border-radius: 12px;
  padding: 20px 24px;
}

.rental-summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  padding: 6px 0;
}

.rental-summary-row.total {
  border-top: 1px solid var(--green);
  margin-top: 8px;
  padding-top: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--green-accent);
}

/* ========================================
   Birth Date Inputs
   ======================================== */
.birth-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
}

.birth-field {
  display: flex;
  align-items: center;
  gap: 4px;
}

.birth-field input {
  width: 64px;
  padding: 12px 8px;
  border: 1px solid #ddd;
  border-radius: 10px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  text-align: center;
  transition: border-color 0.3s;
}

.birth-field input:first-child {
  width: 80px;
}

.birth-field input:focus {
  outline: none;
  border-color: var(--blue-accent);
}

.birth-unit {
  font-size: 0.85rem;
  color: var(--text-light);
}

.birth-inputs .age-display {
  margin-left: 8px;
  white-space: nowrap;
}

/* ========================================
   Usage Select (Rental)
   ======================================== */
.usage-select {
  margin-bottom: 28px;
}

.usage-options {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

.usage-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--white);
  border: 2px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.88rem;
  transition: all 0.2s;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.usage-option:hover {
  border-color: var(--blue-accent);
}

.usage-option:has(input:checked) {
  border-color: var(--blue-accent);
  background: var(--blue-light);
}

.usage-option input {
  accent-color: var(--blue-accent);
}

.usage-other-wrap {
  margin-top: 12px;
}

.usage-other-wrap input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 10px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  transition: border-color 0.3s;
}

.usage-other-wrap input:focus {
  outline: none;
  border-color: var(--blue-accent);
}

/* ========================================
   Step 3: Form
   ======================================== */
.customer-form {
  background: var(--white);
  border-radius: 16px;
  padding: 36px 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  margin-bottom: 28px;
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.required {
  font-size: 0.7rem;
  color: var(--danger);
  margin-left: 4px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="date"],
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 10px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue-accent);
}

.form-group textarea {
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.radio-group {
  display: flex;
  gap: 20px;
  padding-top: 6px;
}

.radio-label {
  font-size: 0.88rem;
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.radio-label input {
  accent-color: var(--blue-accent);
}

.age-display {
  padding: 12px 16px;
  background: var(--beige-light);
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blue-accent);
}

/* ========================================
   Step 4: Confirm
   ======================================== */
.confirm-card {
  background: var(--white);
  border-radius: 16px;
  padding: 36px 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  margin-bottom: 28px;
}

.confirm-section-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blue-accent);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--blue-light);
  margin-bottom: 16px;
  margin-top: 28px;
}

.confirm-section-title:first-child {
  margin-top: 0;
}

.confirm-table {
  width: 100%;
  border-collapse: collapse;
}

.confirm-table th {
  text-align: left;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 0;
  width: 120px;
  vertical-align: top;
}

.confirm-table td {
  font-size: 0.88rem;
  padding: 8px 0;
}

.payment-detail {
  background: var(--beige-light);
  border-radius: 10px;
  padding: 16px 20px;
}

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

/* Payment method selection */
.payment-options {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.payment-card {
  flex: 1;
  background: var(--white);
  border: 2px solid transparent;
  border-radius: 12px;
  padding: 16px;
  cursor: pointer;
  transition: all 0.3s;
  text-align: center;
  font-family: inherit;
  color: inherit;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.payment-card:hover {
  border-color: var(--blue-accent);
}

.payment-card.selected {
  border-color: var(--blue-accent);
  background: var(--blue-light);
}

@media (max-width: 600px) {
  .payment-options {
    flex-direction: column;
    gap: 10px;
  }
}

/* ========================================
   Step 5: Complete
   ======================================== */
.complete-wrap {
  text-align: center;
  padding: 40px 0;
}

.complete-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: var(--green-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--green-accent);
}

.complete-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.complete-desc {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 2;
  margin-bottom: 24px;
}

.complete-note {
  background: var(--beige-light);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 24px;
  display: inline-block;
}

.complete-note p {
  font-size: 0.85rem;
  color: var(--text-light);
}

.complete-contact {
  margin-bottom: 32px;
}

.complete-contact p {
  font-size: 0.85rem;
  color: var(--text-light);
}

.complete-contact a {
  color: var(--blue-accent);
  font-weight: 500;
}

.btn-back-home {
  display: inline-block;
  padding: 14px 40px;
  background: var(--blue-accent);
  color: var(--white);
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.3s;
}

.btn-back-home:hover {
  background: #5a9bae;
}

/* ========================================
   Buttons
   ======================================== */
.step-actions {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 32px;
}

.btn-back {
  padding: 14px 32px;
  border: 1px solid #ddd;
  border-radius: 30px;
  background: var(--white);
  color: var(--text-light);
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-back:hover {
  border-color: var(--text-muted);
}

.btn-next {
  padding: 14px 40px;
  border: none;
  border-radius: 30px;
  background: var(--blue-accent);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-next:hover {
  background: #5a9bae;
}

.btn-next:disabled {
  background: #ccc;
  cursor: not-allowed;
}

.btn-submit {
  padding: 16px 48px;
  border: none;
  border-radius: 30px;
  background: var(--green-accent);
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
  letter-spacing: 0.04em;
}

.btn-submit:hover {
  background: #5a9280;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--text);
  color: var(--white);
  padding: 40px 0;
}

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

.footer-logo {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .header-inner {
    padding: 14px 20px;
  }

  .page-hero {
    padding: 120px 0 48px;
  }

  .page-hero-title {
    font-size: 1.6rem;
  }

  .steps {
    padding: 32px 0 28px;
  }

  .step-label {
    font-size: 0.65rem;
  }

  .step-num {
    width: 30px;
    height: 30px;
    font-size: 0.8rem;
  }

  .step-line {
    width: 24px;
    margin: 0 6px;
  }

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

  .step-title {
    font-size: 1.1rem;
  }

  .calendar-wrap {
    padding: 20px 16px;
  }

  .cal-day {
    padding: 8px 2px;
    font-size: 0.8rem;
  }

  .birth-field input {
    width: 56px;
    padding: 10px 6px;
  }

  .birth-field input:first-child {
    width: 72px;
  }

  .usage-options {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .customer-form {
    padding: 24px 20px;
  }

  .confirm-card {
    padding: 24px 20px;
  }

  .confirm-table th {
    display: block;
    width: 100%;
    padding-bottom: 2px;
  }

  .confirm-table td {
    display: block;
    padding-top: 0;
    padding-bottom: 12px;
  }

  .step-actions {
    flex-direction: column-reverse;
  }

  .btn-next,
  .btn-back,
  .btn-submit {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .radio-group {
    flex-direction: column;
    gap: 10px;
  }
}