/* ============================================================
   Lesson Hub — public.css
   公開ページ（検索・教室詳細・講師詳細）共通スタイル
============================================================ */
:root {
  --black:      #080a07;
  --black-2:    #0d110c;
  --green-950:  #0a160a;
  --green-900:  #0f2010;
  --green-800:  #163318;
  --green-700:  #1e4820;
  --green-600:  #275c2a;
  --green-400:  #4a9050;
  --green-200:  #9dd4a3;
  --green-100:  #d0ecd3;
  --green-50:   #f0f8f1;
  --gold:       #c9a84c;
  --gold-light: #e8c97a;
  --gold-dim:   #7a6330;
  --cream:      #f5f0e8;
  --cream-dim:  #c8c0ad;
  --gray-mid:   #3a3d38;
  --gray-light: #6b6e68;
  --border:     #e0ddd6;
  --white:      #ffffff;
  --font-display: 'Cormorant Garamond', serif;
  --font-body:    'Noto Serif JP', serif;
  --font-mono:    'Space Mono', monospace;
  --nav-h: 68px;
  --max-w: 1140px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--cream);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.8;
  overflow-x: hidden;
  cursor: none;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 9990; opacity: 0.4;
}
.cursor { position: fixed; width: 8px; height: 8px; background: var(--gold); border-radius: 50%; pointer-events: none; z-index: 9999; transform: translate(-50%,-50%); mix-blend-mode: difference; }
.cursor-ring { position: fixed; width: 36px; height: 36px; border: 1px solid rgba(201,168,76,0.5); border-radius: 50%; pointer-events: none; z-index: 9998; transform: translate(-50%,-50%); transition: width 0.2s, height 0.2s, border-color 0.2s; }
body:has(a:hover) .cursor-ring, body:has(button:hover) .cursor-ring { width: 54px; height: 54px; border-color: var(--gold); }

/* NAV */
.pub-nav { position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 100; display: flex; align-items: center; justify-content: space-between; padding: 0 48px; background: rgba(8,10,7,0.92); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(201,168,76,0.1); }
.pub-nav-logo { display: flex; flex-direction: column; text-decoration: none; gap: 1px; }
.pub-nav-logo-main { font-family: var(--font-display); font-size: 19px; font-weight: 600; color: var(--white); letter-spacing: 0.04em; line-height: 1; }
.pub-nav-logo-sub { font-family: var(--font-mono); font-size: 9px; color: var(--gold); letter-spacing: 0.2em; text-transform: uppercase; }
.pub-nav-right { display: flex; align-items: center; gap: 12px; }
.pub-nav-link { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cream-dim); text-decoration: none; transition: color 0.2s; }
.pub-nav-link:hover { color: var(--gold); }
.pub-nav-btn { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--black); background: var(--gold); border: none; padding: 9px 20px; text-decoration: none; cursor: none; transition: background 0.2s; }
.pub-nav-btn:hover { background: var(--gold-light); }
.pub-nav-hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: none; padding: 4px; }
.pub-nav-hamburger span { display: block; width: 24px; height: 1px; background: var(--cream); transition: all 0.3s; }
.pub-mobile-nav { display: none; position: fixed; inset: 0; background: var(--black); z-index: 99; flex-direction: column; align-items: center; justify-content: center; gap: 36px; opacity: 0; pointer-events: none; transition: opacity 0.3s; }
.pub-mobile-nav.open { opacity: 1; pointer-events: all; }
.pub-mobile-nav a { font-family: var(--font-display); font-size: 32px; font-weight: 300; color: var(--cream); text-decoration: none; transition: color 0.2s; }
.pub-mobile-nav a:hover { color: var(--gold); }

/* PAGE HEADER */
.pub-page-header { padding-top: var(--nav-h); padding-bottom: 40px; padding-left: 48px; padding-right: 48px; border-bottom: 1px solid rgba(201,168,76,0.08); position: relative; overflow: hidden; }
.pub-page-header-bg { position: absolute; inset: 0; background: radial-gradient(ellipse 50% 80% at 80% 50%, rgba(22,51,24,0.22) 0%, transparent 70%), var(--black); }
.pub-page-header-inner { position: relative; z-index: 1; max-width: var(--max-w); margin: 0 auto; padding-top: 40px; }

/* MAIN WRAP */
.pub-wrap { max-width: var(--max-w); margin: 0 auto; padding: 48px; }

/* SEARCH FILTER */
.search-filter-bar {
  background: rgba(30,72,32,0.06);
  border: 1px solid rgba(201,168,76,0.12);
  padding: 20px 24px;
  margin-bottom: 32px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
}
.filter-group { display: flex; flex-direction: column; gap: 5px; }
.filter-label { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); }
.filter-select, .filter-input {
  background: rgba(30,72,32,0.12);
  border: 1px solid rgba(201,168,76,0.18);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 13px;
  padding: 9px 32px 9px 12px;
  outline: none;
  appearance: none;
  cursor: none;
  transition: border-color 0.2s;
  min-width: 140px;
}
.filter-select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23c9a84c' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; }
.filter-select option { background: var(--green-900); color: var(--cream); }
.filter-input { padding-right: 12px; }
.filter-input::placeholder { color: rgba(245,240,232,0.3); font-size: 12px; }
.filter-select:focus, .filter-input:focus { border-color: rgba(201,168,76,0.45); }
.filter-btn { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; background: var(--gold); color: var(--black); border: none; padding: 9px 20px; cursor: none; transition: background 0.2s; align-self: flex-end; white-space: nowrap; }
.filter-btn:hover { background: var(--gold-light); }
.filter-clear { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; background: none; color: var(--gray-light); border: 1px solid rgba(255,255,255,0.1); padding: 9px 16px; cursor: none; transition: all 0.2s; align-self: flex-end; }
.filter-clear:hover { color: var(--cream); border-color: rgba(255,255,255,0.25); }

/* STUDIO CARDS */
.studio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; }
.studio-card {
  background: rgba(30,72,32,0.05);
  border: 1px solid rgba(201,168,76,0.1);
  text-decoration: none;
  color: var(--cream);
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s, background 0.3s;
  position: relative;
  overflow: hidden;
}
.studio-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--green-700), var(--gold-dim)); transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease); }
.studio-card:hover { border-color: rgba(201,168,76,0.28); background: rgba(30,72,32,0.1); }
.studio-card:hover::after { transform: scaleX(1); }
.studio-card-visual { height: 160px; background: linear-gradient(135deg, var(--green-900) 0%, var(--green-800) 100%); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.studio-card-visual-icon { font-size: 56px; opacity: 0.25; user-select: none; }
.studio-card-plan { position: absolute; top: 12px; right: 12px; font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase; padding: 3px 10px; border: 1px solid rgba(201,168,76,0.3); color: var(--gold); background: rgba(8,10,7,0.6); }
.studio-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.studio-card-pref { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold-dim); margin-bottom: 6px; }
.studio-card-name { font-family: var(--font-display); font-size: 20px; font-weight: 400; color: var(--white); margin-bottom: 8px; line-height: 1.2; letter-spacing: -0.01em; }
.studio-card-desc { font-size: 12px; color: var(--gray-light); line-height: 1.8; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.studio-card-footer { padding: 14px 20px; border-top: 1px solid rgba(201,168,76,0.07); display: flex; justify-content: space-between; align-items: center; }
.studio-card-instruments { font-size: 11px; color: var(--gray-light); }
.studio-card-arrow { color: var(--gold-dim); font-size: 14px; transition: transform 0.3s var(--ease); }
.studio-card:hover .studio-card-arrow { transform: translateX(4px); }

/* PAGINATION */
.pagination { display: flex; justify-content: center; gap: 4px; margin-top: 40px; }
.page-btn { font-family: var(--font-mono); font-size: 11px; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border: 1px solid rgba(201,168,76,0.15); background: none; color: var(--cream-dim); cursor: none; transition: all 0.2s; text-decoration: none; }
.page-btn:hover { border-color: var(--gold); color: var(--gold); }
.page-btn.active { background: var(--gold); color: var(--black); border-color: var(--gold); }

/* STUDIO DETAIL */
.studio-detail-header { display: grid; grid-template-columns: 1fr 320px; gap: 48px; align-items: start; }
.studio-detail-name { font-family: var(--font-display); font-size: clamp(36px, 5vw, 64px); font-weight: 300; color: var(--white); line-height: 1.05; letter-spacing: -0.02em; margin-bottom: 12px; }
.studio-detail-meta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 20px; }
.studio-detail-meta-item { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; color: var(--cream-dim); display: flex; align-items: center; gap: 6px; }
.studio-detail-meta-item svg { width: 12px; height: 12px; color: var(--gold-dim); }
.studio-detail-desc { font-size: 14px; color: var(--cream-dim); line-height: 2.1; }

/* BOOKING PANEL */
.booking-panel { background: rgba(30,72,32,0.08); border: 1px solid rgba(201,168,76,0.15); padding: 28px; position: sticky; top: calc(var(--nav-h) + 20px); }
.booking-panel-title { font-family: var(--font-display); font-size: 22px; font-weight: 400; color: var(--white); margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid rgba(201,168,76,0.1); }
.booking-panel-select { width: 100%; background: rgba(30,72,32,0.15); border: 1px solid rgba(201,168,76,0.2); color: var(--cream); font-family: var(--font-body); font-size: 13px; padding: 10px 32px 10px 12px; outline: none; appearance: none; margin-bottom: 14px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23c9a84c' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; cursor: none; }
.booking-panel-select option { background: var(--green-900); }

/* SLOT LIST */
.slot-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; max-height: 280px; overflow-y: auto; }
.slot-item { padding: 10px 14px; border: 1px solid rgba(201,168,76,0.12); background: rgba(30,72,32,0.06); cursor: none; transition: all 0.2s; display: flex; justify-content: space-between; align-items: center; }
.slot-item:hover { border-color: rgba(201,168,76,0.3); background: rgba(30,72,32,0.15); }
.slot-item.selected { border-color: var(--gold); background: rgba(201,168,76,0.08); }
.slot-item-time { font-family: var(--font-mono); font-size: 12px; color: var(--cream); }
.slot-item-teacher { font-size: 11px; color: var(--gray-light); }
.slot-empty { font-size: 13px; color: var(--gray-light); text-align: center; padding: 20px; }

.btn-book { width: 100%; display: flex; align-items: center; justify-content: center; gap: 10px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; background: var(--gold); color: var(--black); border: none; padding: 14px; cursor: none; transition: background 0.2s, transform 0.15s var(--ease); margin-top: 8px; }
.btn-book:hover { background: var(--gold-light); transform: translateY(-1px); }
.btn-book:disabled { opacity: 0.4; transform: none; }

/* TEACHERS GRID */
.teachers-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; margin-top: 32px; }
.teacher-card { background: rgba(30,72,32,0.05); border: 1px solid rgba(201,168,76,0.08); padding: 24px; text-decoration: none; color: var(--cream); transition: border-color 0.3s, background 0.3s; display: block; }
.teacher-card:hover { border-color: rgba(201,168,76,0.22); background: rgba(30,72,32,0.1); }
.teacher-avatar { width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg, var(--green-800), var(--green-700)); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 28px; color: rgba(201,168,76,0.5); margin-bottom: 14px; border: 1px solid rgba(201,168,76,0.15); }
.teacher-name { font-family: var(--font-display); font-size: 20px; font-weight: 400; color: var(--white); margin-bottom: 4px; }
.teacher-instruments { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; color: var(--gold-dim); text-transform: uppercase; margin-bottom: 8px; }
.teacher-bio { font-size: 12px; color: var(--gray-light); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* PLAN CARDS */
.plan-cards { display: flex; flex-direction: column; gap: 8px; margin-top: 24px; }
.plan-card { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border: 1px solid rgba(201,168,76,0.1); background: rgba(30,72,32,0.04); gap: 16px; flex-wrap: wrap; }
.plan-card-name { font-family: var(--font-display); font-size: 17px; font-weight: 400; color: var(--white); }
.plan-card-cat { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold-dim); margin-top: 2px; }
.plan-card-duration { font-family: var(--font-mono); font-size: 12px; color: var(--cream-dim); }
.plan-card-price { font-family: var(--font-display); font-size: 22px; color: var(--gold-light); }
.plan-card-price small { font-size: 13px; color: var(--cream-dim); font-weight: 300; }

/* SECTION TITLE */
.pub-section-label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.pub-section-label::before { content: ''; width: 24px; height: 1px; background: var(--gold); }
.pub-section-title { font-family: var(--font-display); font-size: clamp(24px, 3vw, 36px); font-weight: 300; color: var(--white); margin-bottom: 8px; letter-spacing: -0.01em; }
.pub-section-title em { font-style: italic; color: var(--green-200); }
.pub-section-divider { height: 1px; background: linear-gradient(90deg, rgba(201,168,76,0.15), transparent); margin: 48px 0; }

/* FOOTER */
.pub-footer { background: var(--black); border-top: 1px solid rgba(201,168,76,0.1); padding: 40px 48px; }
.pub-footer-inner { max-width: var(--max-w); margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
.pub-footer-logo { font-family: var(--font-display); font-size: 16px; color: var(--white); }
.pub-footer-logo span { color: var(--gold); }
.pub-footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.pub-footer-links a { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gray-light); text-decoration: none; transition: color 0.2s; }
.pub-footer-links a:hover { color: var(--gold); }
.pub-footer-copy { font-family: var(--font-mono); font-size: 9px; color: var(--gray-mid); width: 100%; text-align: center; border-top: 1px solid rgba(255,255,255,0.04); padding-top: 20px; margin-top: 12px; letter-spacing: 0.08em; }

/* REVEAL */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }

/* LOADING */
.loading-spinner { display: flex; align-items: center; justify-content: center; padding: 60px; }
.loading-spinner::after { content: ''; width: 32px; height: 32px; border: 2px solid rgba(201,168,76,0.2); border-top-color: var(--gold); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* EMPTY */
.pub-empty { text-align: center; padding: 80px 20px; color: var(--gray-light); }
.pub-empty-icon { font-size: 48px; opacity: 0.3; margin-bottom: 16px; }
.pub-empty-title { font-family: var(--font-display); font-size: 24px; font-weight: 300; color: var(--cream-dim); margin-bottom: 8px; }
.pub-empty-desc { font-size: 13px; line-height: 1.9; }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .studio-grid { grid-template-columns: repeat(2, 1fr); }
  .studio-detail-header { grid-template-columns: 1fr; }
  .booking-panel { position: static; }
  .teachers-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .pub-nav { padding: 0 20px; }
  .pub-nav-link { display: none; }
  .pub-nav-hamburger { display: flex !important; }
  .pub-mobile-nav { display: flex; }
  .pub-page-header { padding-left: 20px; padding-right: 20px; }
  .pub-wrap { padding: 32px 20px; }
  .studio-grid { grid-template-columns: 1fr; }
  .teachers-grid { grid-template-columns: 1fr; }
  .search-filter-bar { flex-direction: column; }
  .filter-select, .filter-input { min-width: 100%; }
  .pub-footer { padding: 32px 20px; }
  .pub-footer-inner { flex-direction: column; align-items: flex-start; }
  body { cursor: auto; }
  .cursor, .cursor-ring { display: none; }
}