/* ALBA GOLF CLUB 共通デザイントークン。
   alba_index.html の :root 変数と同じ値を使い、個人レッスン予約ページ群
   （/lesson/ 以下）でも同じ配色・雰囲気になるようにする。
   index.html 側のインライン <style> はここから複製せず独立管理のまま。 */
:root{
  --green-900:#0e2b1f;
  --green-800:#163c2b;
  --green-700:#1b4332;
  --green-600:#2d6a4f;
  --green-500:#40916c;
  --green-100:#e7f4ec;
  --gold:#c9a227;
  --gold-light:#e9cf6b;
  --cream:#faf8f2;
  --ink:#1c231f;
  --ink-soft:#4c564f;
  --line:#dfe6e0;
  --red:#b3392f;
  --radius:16px;
  --shadow:0 10px 30px rgba(14,43,31,.10);
  --shadow-lg:0 20px 50px rgba(14,43,31,.16);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{overflow-x:hidden}
body{
  font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP","Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--cream);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:880px;margin:0 auto;padding:0 24px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.14em;font-weight:700;color:var(--green-600);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--gold);display:inline-block}
h1.page-title{font-size:clamp(1.5rem,3.4vw,2.1rem);font-weight:800;color:var(--green-800);margin:10px 0 8px;letter-spacing:.02em}
.page-lead{color:var(--ink-soft);font-size:.95rem;margin-bottom:8px}

/* ---------- Header / Footer ---------- */
header.lesson-header{
  position:sticky;top:0;z-index:100;
  background:rgba(250,248,242,.95);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
header.lesson-header .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;max-width:880px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--green-800);font-size:1.05rem;letter-spacing:.02em}
.logo .mark{width:30px;height:30px;border-radius:50%;background:radial-gradient(circle at 32% 30%,#fff,#e7f4ec 45%,var(--green-600) 100%);border:2px solid var(--green-700);flex:none}
.logo small{display:block;font-size:.68rem;font-weight:600;color:var(--ink-soft)}
.back-home{font-size:.85rem;font-weight:700;color:var(--green-700)}
footer.lesson-footer{padding:40px 0;text-align:center;color:var(--ink-soft);font-size:.8rem}

main{min-height:60vh;padding:48px 0 80px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-weight:700;font-size:.9rem;
  border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-primary{background:var(--green-700);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--green-800);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-primary:disabled{background:var(--line);color:var(--ink-soft);cursor:not-allowed;transform:none;box-shadow:none}
.btn-gold{background:var(--gold);color:var(--green-900)}
.btn-gold:hover{background:var(--gold-light);transform:translateY(-2px)}
.btn-outline{border-color:var(--green-700);color:var(--green-700);background:transparent}
.btn-outline:hover{background:var(--green-700);color:#fff}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{background:#8f2c24;transform:translateY(-2px)}
.btn-small{padding:8px 16px;font-size:.8rem}

/* ---------- Cards / lists ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.choice-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:24px}
.choice-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;
}
.choice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.choice-card h3{color:var(--green-800);font-size:1.05rem;margin-bottom:6px}
.choice-card p{color:var(--ink-soft);font-size:.85rem}

.slot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:10px;margin-top:16px}
.slot-btn{
  background:#fff;border:1px solid var(--green-600);color:var(--green-700);
  border-radius:10px;padding:10px 8px;font-weight:700;font-size:.88rem;cursor:pointer;
  transition:background .15s ease,color .15s ease;
}
.slot-btn:hover{background:var(--green-100)}
.slot-btn.selected{background:var(--green-700);color:#fff}
.slot-btn.booked{background:#f7e6e4;border-color:var(--red);color:var(--red);cursor:not-allowed;opacity:.85}
.slot-btn.booked:hover{background:#f7e6e4}
.slot-btn.booked small{font-weight:600;font-size:.68rem;margin-top:2px}
.empty-note{color:var(--ink-soft);font-size:.9rem;padding:16px 0}

/* ---------- Forms ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-size:.85rem;font-weight:700;color:var(--green-800);margin-bottom:6px}
.field .required{color:var(--red);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;
  font-size:.95rem;font-family:inherit;background:#fff;color:var(--ink);
}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--green-500);outline-offset:1px}
.field-hint{font-size:.78rem;color:var(--ink-soft);margin-top:4px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:520px){.field-row{grid-template-columns:1fr}}

.unit-toggle{display:flex;gap:10px;margin-top:10px}
.unit-toggle button{
  flex:1;padding:10px;border-radius:10px;border:1px solid var(--line);background:#fff;
  font-weight:700;cursor:pointer;color:var(--ink-soft);
}
.unit-toggle button.selected{border-color:var(--green-700);background:var(--green-100);color:var(--green-800)}

/* ---------- Summary box ---------- */
.summary-box{background:var(--green-100);border-radius:var(--radius);padding:20px;margin-bottom:24px}
.summary-box dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:.9rem}
.summary-box dt{color:var(--ink-soft);font-weight:700}
.summary-box dd{color:var(--ink)}

/* ---------- Table (admin) ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
table.data-table{width:100%;border-collapse:collapse;font-size:.85rem;background:#fff}
table.data-table th,table.data-table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
table.data-table th{background:var(--green-100);color:var(--green-800);font-weight:700}
table.data-table tr:last-child td{border-bottom:none}
.status-pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.75rem;font-weight:700}
.status-pill.confirmed{background:var(--green-100);color:var(--green-700)}
.status-pill.cancelled{background:#f3e2df;color:var(--red)}

.alert{border-radius:12px;padding:14px 18px;font-size:.88rem;margin-bottom:18px}
.alert-error{background:#f7e6e4;color:var(--red);border:1px solid #e6c3bd}
.alert-success{background:var(--green-100);color:var(--green-700);border:1px solid #bfe0cd}

.top-actions{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:20px}

/* ---------- Month calendar (schedule overview) ---------- */
.month-calendar-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.month-calendar-head h2{color:var(--green-800);font-size:1.15rem}
.month-calendar-updated{font-size:.78rem;color:var(--ink-soft)}
.month-calendar-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.month-calendar{display:grid;grid-template-columns:repeat(7,minmax(112px,1fr));min-width:820px}
.mc-weekday{padding:10px 8px;text-align:center;font-size:.78rem;font-weight:700;color:var(--green-800);background:var(--green-100);border-bottom:1px solid var(--line)}
.mc-weekday.sat{color:#2a5da0}
.mc-weekday.sun{color:var(--red)}
.mc-day{min-height:104px;padding:8px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);font-size:.75rem}
.month-calendar .mc-day:nth-child(7n){border-right:none}
.mc-day.empty{background:#fafafa}
.mc-day.closed{background:#faf1ef}
.mc-day.today{background:var(--green-100);box-shadow:inset 0 0 0 2px var(--green-600)}
.mc-date{font-weight:700;color:var(--green-800);margin-bottom:6px;display:block}
.mc-entry{margin-bottom:4px;line-height:1.35}
.mc-entry .mc-teacher{font-weight:700;color:var(--green-700)}
.mc-entry .mc-range{display:block;color:var(--ink)}
.mc-closed-label{color:var(--red);font-weight:700;font-size:.72rem}
.month-calendar-legend{display:flex;gap:18px;flex-wrap:wrap;margin-top:12px;font-size:.78rem;color:var(--ink-soft)}
.month-calendar-legend span{display:inline-flex;align-items:center;gap:6px}
.month-calendar-legend i{width:12px;height:12px;border-radius:3px;display:inline-block}
.month-calendar-legend i.today{background:var(--green-100);box-shadow:inset 0 0 0 2px var(--green-600)}
.month-calendar-legend i.closed{background:#faf1ef;border:1px solid var(--line)}

/* スマホ幅では横スクロール前提の週グリッドが読みにくいため、縦積みの一覧表示に切り替える */
.month-calendar-list{display:none}
@media (max-width:640px){
  .month-calendar-wrap{display:none}
  .month-calendar-list{display:block;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
  .mc-row{display:flex;gap:12px;padding:10px 12px;border-bottom:1px solid var(--line)}
  .mc-row:last-child{border-bottom:none}
  .mc-row.closed{background:#faf1ef}
  .mc-row.today{background:var(--green-100)}
  .mc-row-date{flex:0 0 40px;text-align:center}
  .mc-row-num{display:block;font-weight:700;color:var(--green-800);font-size:1.05rem;line-height:1.2}
  .mc-row-dow{display:block;font-size:.7rem;color:var(--ink-soft)}
  .mc-row-dow.sat{color:#2a5da0}
  .mc-row-dow.sun{color:var(--red)}
  .mc-row-body{flex:1;font-size:.82rem;padding-top:1px}
  .mc-row-body .mc-entry{margin-bottom:4px}
  .mc-row-body .mc-entry:last-child{margin-bottom:0}
  .mc-row-body .mc-closed-label{font-size:.78rem}
}

/* ---------- Modal ---------- */
.modal-backdrop{
  position:fixed;inset:0;background:rgba(14,43,31,.55);display:none;
  align-items:center;justify-content:center;padding:20px;z-index:200;
}
.modal-backdrop.open{display:flex}
.modal{background:#fff;border-radius:var(--radius);max-width:520px;width:100%;padding:28px;box-shadow:var(--shadow-lg);max-height:85vh;overflow-y:auto}
.modal h3{color:var(--green-800);margin-bottom:12px}
.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:20px}