/* =========================================================
   トリセツ! システム管理コンソール — プロトタイプ
   PC前提（左サイドバー）。学校管理画面と統一感のある管理UI。
   ========================================================= */
:root{
  --c-teal:#64a19c;--c-blue:#76a3db;--c-gold:#d29a24;--c-purple:#bf6ea3;
  --brand:#5b76b0;--brand-dark:#4a6296; /* 管理者は青系アクセント */
  --bg:#eef1f5;--surface:#fff;--line:#e2e7ee;
  --text:#1d2733;--text-sub:#5f6c7b;--text-mute:#97a3b2;
  --ok:#3a9d6e;--warn:#d29a24;--danger:#d2604f;
  --radius:12px;--shadow:0 1px 4px rgba(20,30,45,.07);--shadow-lg:0 12px 34px rgba(20,30,45,.2);
  --font:"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,system-ui,sans-serif;
  --sidebar-w:252px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;}

.shell{display:flex;min-height:100vh;}
.sidebar{width:var(--sidebar-w);flex:0 0 var(--sidebar-w);background:#1b2433;color:#cdd6e3;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;z-index:40;}
.brand{display:flex;align-items:center;gap:12px;padding:18px;border-bottom:1px solid rgba(255,255,255,.08);}
.brand-mark{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,#5b76b0,#76a3db);display:flex;align-items:center;justify-content:center;font-size:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-text b{font-size:15px;color:#fff;}
.brand-text small{font-size:11px;color:#8d9bb0;}
.side-nav{flex:1;padding:10px 12px;display:flex;flex-direction:column;gap:2px;overflow-y:auto;}
.nav-cap{font-size:10.5px;font-weight:800;color:#6c7a90;letter-spacing:.06em;padding:14px 14px 5px;text-transform:uppercase;}
.snav{display:flex;align-items:center;gap:11px;border:0;background:none;cursor:pointer;font-family:inherit;font-size:14px;font-weight:600;color:#aeb9c9;padding:10px 14px;border-radius:9px;text-align:left;width:100%;}
.snav .ico{font-size:17px;width:21px;text-align:center;}
.snav:hover{background:rgba(255,255,255,.06);color:#fff;}
.snav.active{background:var(--brand);color:#fff;font-weight:800;}
.side-foot{padding:14px;border-top:1px solid rgba(255,255,255,.08);}
.side-user{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.side-user .avatar{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;font-size:18px;}
.side-user b{font-size:13px;color:#fff;display:block;}
.side-user small{font-size:11px;color:#8d9bb0;}

.main-col{flex:1;min-width:0;display:flex;flex-direction:column;}
.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);height:60px;display:flex;align-items:center;gap:14px;padding:0 24px;}
.hamburger{display:none;border:0;background:var(--bg);font-size:18px;border-radius:9px;padding:7px 11px;cursor:pointer;}
.page-title{flex:1;font-size:19px;font-weight:800;margin:0;}
.topbar-right{display:flex;align-items:center;gap:8px;}
.content{flex:1;padding:24px;max-width:1320px;width:100%;margin:0 auto;}

@media (max-width:900px){
  .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%);transition:transform .25s;box-shadow:var(--shadow-lg);}
  .sidebar.open{transform:translateX(0);}
  .hamburger{display:block;}
  .content{padding:16px;}
}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:0;border-radius:10px;cursor:pointer;font-family:inherit;font-size:14px;font-weight:700;padding:11px 18px;background:var(--brand);color:#fff;transition:filter .15s,transform .05s;}
.btn:hover{filter:brightness(1.07);}.btn:active{transform:translateY(1px);}
.btn.secondary{background:#fff;color:var(--brand);border:1.5px solid var(--brand);}
.btn.ghost{background:var(--bg);color:var(--text);}
.btn.danger{background:#fff;color:var(--danger);border:1.5px solid var(--danger);}
.btn.solid-danger{background:var(--danger);color:#fff;}
.btn.gold{background:var(--c-gold);}
.btn.teal{background:var(--c-teal);}
.btn.sm{padding:7px 13px;font-size:13px;border-radius:8px;}
.btn.full{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;}
.link{background:none;border:0;color:var(--brand);font-weight:700;cursor:pointer;font-size:14px;font-family:inherit;padding:2px;}
.link:hover{text-decoration:underline;}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);}
.card-pad{padding:18px;}
.card-head{display:flex;align-items:center;justify-content:space-between;padding:15px 18px;border-bottom:1px solid var(--line);gap:10px;flex-wrap:wrap;}
.card-head h3{margin:0;font-size:15px;}

.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:700;color:var(--text-sub);margin-bottom:6px;}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;font-size:14px;font-family:inherit;border:1.5px solid var(--line);border-radius:9px;background:#fff;color:var(--text);}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);}
.hint{font-size:12px;color:var(--text-mute);}
.row-2f{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media(max-width:560px){.row-2f{grid-template-columns:1fr;}}

.badge{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;background:var(--bg);color:var(--text-sub);white-space:nowrap;}
.badge.ok{background:#e6f4ee;color:var(--ok);}
.badge.warn{background:#fbf1dc;color:#a9781a;}
.badge.danger{background:#fbe7e3;color:var(--danger);}
.badge.info{background:#e9f1fb;color:#3f6fa8;}
.badge.brand{background:#e8edf7;color:var(--brand-dark);}
.badge.gray{background:#eef1f5;color:var(--text-mute);}
.badge.purple{background:#f7e9f1;color:#9c4f7e;}

.section-title{font-size:13px;font-weight:800;color:var(--text-mute);margin:22px 2px 10px;}
.divider{height:1px;background:var(--line);margin:14px 0;}

.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:20px;}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);}
.kpi .k-top{display:flex;align-items:center;gap:8px;color:var(--text-sub);font-size:13px;font-weight:700;}
.kpi .k-ico{width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:16px;background:#e8edf7;}
.kpi .k-num{font-size:27px;font-weight:800;margin-top:8px;line-height:1.1;}
.kpi .k-sub{font-size:12px;color:var(--text-mute);margin-top:3px;}

.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:680px;}
thead th{background:#f5f7fa;text-align:left;padding:11px 14px;font-size:12.5px;font-weight:800;color:var(--text-sub);border-bottom:1px solid var(--line);white-space:nowrap;}
tbody td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:middle;}
tbody tr:last-child td{border-bottom:0;}
tbody tr.clickable{cursor:pointer;}
tbody tr.clickable:hover{background:#f6f8fc;}
td .name{font-weight:700;}
td.mono,.mono{font-family:monospace;font-size:13px;}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px;}
.toolbar .search{flex:1;min-width:200px;position:relative;}
.toolbar .search input{width:100%;padding:10px 12px 10px 36px;border:1.5px solid var(--line);border-radius:10px;font-size:14px;font-family:inherit;background:#fff;}
.toolbar .search::before{content:"🔍";position:absolute;left:11px;top:50%;transform:translateY(-50%);font-size:14px;}
.toolbar select{padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;font-size:14px;font-family:inherit;background:#fff;}
.spacer{flex:1;}

.mini-prog{width:110px;height:7px;border-radius:999px;background:#e7ecf2;overflow:hidden;display:inline-block;vertical-align:middle;}
.mini-prog>i{display:block;height:100%;background:var(--brand);}

.kv{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px;gap:10px;}
.kv:last-child{border-bottom:0;}
.kv .k{color:var(--text-sub);}.kv .v{font-weight:700;text-align:right;}

.note{background:#eef2f9;border:1px solid #d6e0ee;border-radius:11px;padding:13px 16px;font-size:13px;color:var(--text-sub);}
.note.warn{background:#fbf4e3;border-color:#eed9a8;color:#8a6614;}
.note.danger{background:#fbeae6;border-color:#f0c7bd;color:#9c3a29;}

.grid-2{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;align-items:start;}
@media(max-width:980px){.grid-2{grid-template-columns:1fr;}}
.grid-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;}

/* タブ */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:18px;flex-wrap:wrap;}
.tab{border:0;background:none;cursor:pointer;font-family:inherit;font-size:14px;font-weight:700;color:var(--text-sub);padding:11px 16px;border-bottom:3px solid transparent;}
.tab.active{color:var(--brand);border-bottom-color:var(--brand);}

/* アップロード風ドロップゾーン */
.dropzone{border:2px dashed #c4cfdd;border-radius:14px;padding:34px;text-align:center;color:var(--text-mute);background:#fafbfd;cursor:pointer;}
.dropzone:hover{border-color:var(--brand);color:var(--brand);}
.dropzone .big{font-size:40px;}

/* 並び替えリスト */
.sortable .sort-row{display:flex;align-items:center;gap:12px;padding:13px 16px;border-bottom:1px solid var(--line);background:#fff;}
.sortable .sort-row:last-child{border-bottom:0;}
.sort-handle{cursor:grab;color:var(--text-mute);font-size:18px;}
.sort-row .s-main{flex:1;min-width:0;}
.sort-row .s-title{font-weight:700;}
.sort-row .s-sub{font-size:12px;color:var(--text-mute);}
.order-btns{display:flex;flex-direction:column;gap:2px;}
.order-btns button{border:0;background:var(--bg);width:26px;height:22px;border-radius:6px;cursor:pointer;font-size:11px;}
.order-btns button:hover{background:#e2e7ee;}

/* プレビュー（動画） */
.preview-player{background:#0e1416;aspect-ratio:16/9;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;position:relative;}
.preview-player .pp-play{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;font-size:26px;}

/* 認証 */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(135deg,#1b2433,#2c3a52);}
.auth-card{width:100%;max-width:400px;background:#fff;border-radius:16px;padding:30px;box-shadow:var(--shadow-lg);}
.auth-logo{text-align:center;margin-bottom:22px;}
.auth-logo .mark{width:58px;height:58px;border-radius:15px;margin:0 auto 12px;background:linear-gradient(135deg,#5b76b0,#76a3db);display:flex;align-items:center;justify-content:center;font-size:28px;}
.auth-logo h1{font-size:20px;margin:0;}
.auth-logo p{font-size:13px;color:var(--text-sub);margin:4px 0 0;}

.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);background:#1d2733;color:#fff;padding:12px 20px;border-radius:11px;font-size:14px;font-weight:600;z-index:1000;box-shadow:var(--shadow-lg);}
.modal-overlay{position:fixed;inset:0;background:rgba(15,22,33,.55);z-index:900;display:flex;align-items:center;justify-content:center;padding:18px;}
.modal{background:#fff;width:100%;max-width:640px;border-radius:16px;padding:24px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg);}
.modal h3{margin:0 0 4px;font-size:19px;}
.modal .m-sub{color:var(--text-sub);font-size:13px;margin-bottom:16px;}
.modal-close{float:right;border:0;background:var(--bg);width:32px;height:32px;border-radius:8px;cursor:pointer;font-size:16px;}

.code-pill{display:inline-flex;align-items:center;gap:8px;background:var(--bg);border:1px dashed var(--line);border-radius:9px;padding:8px 12px;font-family:monospace;font-size:15px;font-weight:700;}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px;}
.dot.green{background:var(--ok);}.dot.amber{background:var(--warn);}.dot.red{background:var(--danger);}.dot.gray{background:var(--text-mute);}

/* hidden属性を常に優先（display指定で上書きされ、モーダル等が表示されてしまう不具合の修正） */
[hidden]{display:none !important;}