:root{
  --rose:#c2185b; --rose-d:#8e0038; --rose-l:#fce4ec;
  --ink:#2b2b2b; --muted:#777; --line:#e6e6e6; --bg:#f6f4f2;
  --ok:#2e7d32; --booked:#ef6c00; --todo:#9e9e9e;
  --radius:12px; --shadow:0 2px 10px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--rose-d)}

/* ===== ログイン ===== */
.login-page{display:flex;min-height:100vh;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#fce4ec,#f8bbd0)}
.login-card{background:#fff;padding:36px 32px;border-radius:16px;box-shadow:var(--shadow);width:min(360px,92vw);text-align:center}
.login-card h1{color:var(--rose-d);margin:.2em 0 .8em;font-size:1.5rem}
.login-card h1 small{font-size:.95rem;color:var(--muted);font-weight:600}
.login-card label{display:block;text-align:left;margin:.7em 0;font-size:.9rem;color:var(--muted)}
.login-card input{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font-size:1rem;margin-top:4px}
.login-card button{width:100%;margin-top:1em;padding:11px;background:var(--rose);color:#fff;border:0;border-radius:8px;font-size:1rem;font-weight:700;cursor:pointer}
.login-card button:hover{background:var(--rose-d)}
.login-card .hint{font-size:.78rem;color:var(--muted);margin-top:1em}
.alert{background:#ffebee;color:#c62828;padding:10px;border-radius:8px;font-size:.88rem}

/* ===== トップバー ===== */
.topbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;
  background:var(--rose);color:#fff;padding:10px 18px;box-shadow:var(--shadow)}
.brand{font-weight:800;font-size:1.05rem}
.brand span{font-weight:500;opacity:.85;font-size:.85rem}
.topbar nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.who{font-size:.85rem;opacity:.95}
.btn-link{background:rgba(255,255,255,.18);color:#fff;border:0;border-radius:6px;padding:6px 12px;
  font-size:.82rem;cursor:pointer;text-decoration:none}
.btn-link:hover{background:rgba(255,255,255,.32)}

.banner{background:#fff8e1;color:#8d6e00;padding:10px 18px;font-size:.88rem;border-bottom:1px solid #f0e0a0}

/* ===== レイアウト ===== */
.container{max-width:1000px;margin:18px auto;padding:0 14px;display:flex;flex-direction:column;gap:18px}
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}
.card h2{margin:.1em 0 .6em;font-size:1.1rem;color:var(--rose-d);border-left:4px solid var(--rose);padding-left:10px}
.note,.hint{font-size:.8rem;color:var(--muted);margin:.2em 0 .8em}

/* ===== TODO ===== */
.todo-form{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.todo-form input[type=text]{flex:1 1 240px}
.todo-form input,.todo-form select{padding:8px;border:1px solid var(--line);border-radius:8px;font-size:.9rem}
.todo-form button{background:var(--rose);color:#fff;border:0;border-radius:8px;padding:8px 18px;font-weight:700;cursor:pointer}
.todo-form button:hover{background:var(--rose-d)}
.todo-list{list-style:none;margin:0;padding:0}
.todo-item{display:flex;align-items:center;gap:10px;padding:9px 4px;border-bottom:1px solid var(--line)}
.todo-item label{display:flex;align-items:center;gap:9px;flex:1;cursor:pointer}
.todo-check{width:18px;height:18px;accent-color:var(--rose)}
.todo-item.done .todo-title{text-decoration:line-through;color:var(--muted)}
.todo-meta{display:flex;gap:6px;align-items:center;font-size:.78rem}
.tag{background:var(--rose-l);color:var(--rose-d);padding:2px 8px;border-radius:20px}
.due{color:var(--booked)}
.todo-del{background:none;border:0;color:#bbb;cursor:pointer;font-size:1rem;padding:2px 6px}
.todo-del:hover{color:#c62828}
.empty{color:var(--muted);font-size:.88rem;padding:8px 4px}

/* ===== マトリクス ===== */
.matrix-wrap{overflow-x:auto}
.matrix{border-collapse:collapse;width:100%;font-size:.86rem;min-width:max-content}
.matrix th,.matrix td{border:1px solid var(--line);padding:6px 10px;text-align:center}
.matrix thead th{background:#fafafa;color:var(--ink);font-weight:700;white-space:nowrap}
.matrix thead th small{color:var(--muted);font-weight:400;font-size:.72rem}
.matrix .mtitle{color:var(--rose-d)}
.matrix th.sticky{position:sticky;left:0;background:#fafafa;text-align:left;white-space:nowrap;z-index:1}
.matrix tbody tr.me th.sticky,.matrix tbody tr.me td{background:#fff5f8}
.matrix tbody tr.me th.sticky{box-shadow:inset 3px 0 0 var(--rose)}
.matrix td.on{background:#e8f5e9}
.matrix input[type=checkbox]{width:18px;height:18px;accent-color:var(--ok);cursor:pointer}
.matrix input:disabled{accent-color:#bbb;cursor:default;opacity:.5}
.matrix tfoot td.count{font-weight:700;color:var(--rose-d);background:#fafafa}
.matrix select{padding:4px 6px;border:1px solid var(--line);border-radius:6px;font-size:.82rem}
.st-done{background:#e8f5e9}.st-booked{background:#fff3e0}.st-todo{background:#fff}
.badge{padding:2px 8px;border-radius:20px;font-size:.76rem;color:#fff}
.b-done{background:var(--ok)}.b-booked{background:var(--booked)}.b-todo{background:var(--todo)}

/* ===== モーダル ===== */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:50}
.modal[hidden]{display:none}
.modal-box{background:#fff;border-radius:14px;padding:24px;width:min(360px,92vw);box-shadow:var(--shadow)}
.modal-box h3{margin:0 0 14px;color:var(--rose-d)}
.modal-box label{display:block;font-size:.85rem;color:var(--muted);margin:.6em 0}
.modal-box input{width:100%;padding:9px;border:1px solid var(--line);border-radius:8px;margin-top:4px}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}
.modal-actions button{padding:9px 18px;border:0;border-radius:8px;font-weight:700;cursor:pointer}
.modal-actions button[type=submit]{background:var(--rose);color:#fff}
.modal-actions .ghost{background:#eee;color:#555}

/* ===== フラッシュ ===== */
#flash{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(20px);opacity:0;
  padding:10px 22px;border-radius:24px;color:#fff;font-size:.88rem;font-weight:700;pointer-events:none;
  transition:.25s;z-index:100}
#flash.show{opacity:1;transform:translateX(-50%) translateY(0)}
#flash.ok{background:var(--ok)}#flash.err{background:#c62828}

/* ===== 管理画面 ===== */
.admin-table{border-collapse:collapse;width:100%;font-size:.86rem;margin-top:10px}
.admin-table th,.admin-table td{border:1px solid var(--line);padding:7px 10px;text-align:left}
.admin-table th{background:#fafafa}
.admin-form{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:10px 0}
.admin-form input,.admin-form select{padding:8px;border:1px solid var(--line);border-radius:8px;font-size:.88rem}
.admin-form button{background:var(--rose);color:#fff;border:0;border-radius:8px;padding:8px 16px;font-weight:700;cursor:pointer}
.back-link{display:inline-block;margin:14px 0;font-size:.88rem}