/* =====================================================================
   SmartBoard 智慧教學白板平台 — 一般頁面樣式
   © 2026 多元教育．版權所有
   ===================================================================== */

:root{
  --brand:#1b4f8f;
  --brand-2:#2f6db5;
  --brand-light:#e8f0fa;
  --accent:#f5911e;
  --ok:#1f8a54;
  --warn:#c77700;
  --danger:#c0392b;
  --ink:#1c2430;
  --muted:#6b7684;
  --line:#dde4ec;
  --bg:#f4f7fb;
  --card:#ffffff;
  --radius:14px;
  --shadow:0 2px 10px rgba(27,79,143,.08);
  --font:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);
  font-size:16px;line-height:1.65;display:flex;flex-direction:column;min-height:100vh;
}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:1.5rem;margin:.2em 0 .6em}
h2{font-size:1.2rem;margin:0 0 .8em}
.page{flex:1}

/* ---------- 品牌 ---------- */
.brand{display:flex;align-items:center;gap:.6rem}
.brand-logo{height:52px;width:auto;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{color:var(--brand);font-size:1.05rem;letter-spacing:.04em}
.brand-text span{color:var(--muted);font-size:.78rem}


/* 完整標誌（登入 / 註冊頁）*/
.brand-full{justify-content:center}
.brand-logo-full{width:auto;height:150px;display:block}

/* 後台深色列上的標誌加白底圓角，避免深藍疊深藍看不清 */
.admin-theme .topbar .brand-logo{
  background:#fff;border-radius:10px;padding:4px;height:46px;
}

/* ---------- 登入 / 註冊 ---------- */
.auth-page .page{display:flex;align-items:center;justify-content:center;padding:2rem 1rem}
.auth-card{
  width:100%;max-width:420px;background:var(--card);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:2rem 1.75rem;text-align:center;
}
.auth-card .brand{justify-content:center;margin-bottom:1rem}
.auth-card form{text-align:left;margin-top:1rem}
.auth-alt{margin-top:1.2rem;font-size:.9rem;color:var(--muted)}
.hint{color:var(--muted);font-size:.9rem;text-align:left}
.tiny{color:var(--muted);font-size:.8rem}

/* ---------- 表單 ---------- */
label{display:block;margin-bottom:1rem}
label>span{display:block;font-size:.88rem;color:var(--muted);margin-bottom:.3rem}
label>span em{color:var(--danger);font-style:normal}
input[type=text],input[type=email],input[type=password],input[type=tel],
input[type=search],input[type=file],select,textarea{
  width:100%;padding:.7rem .8rem;font-size:1rem;font-family:inherit;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(47,109,181,.15);
}

/* ---------- 按鈕 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.35rem;
  padding:.6rem 1.1rem;font-size:.95rem;font-family:inherit;font-weight:500;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);
  cursor:pointer;text-decoration:none;transition:.15s;
}
.btn:hover{background:#f0f4f9;text-decoration:none}
.btn-lg{width:100%;padding:.85rem 1rem;font-size:1.05rem}
.btn-sm{padding:.35rem .7rem;font-size:.85rem}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2)}
.btn-ok{background:var(--ok);border-color:var(--ok);color:#fff}
.btn-ok:hover{filter:brightness(1.1)}
.btn-warn{background:var(--warn);border-color:var(--warn);color:#fff}
.btn-warn:hover{filter:brightness(1.1)}
.btn-danger{background:#fff;border-color:var(--danger);color:var(--danger)}
.btn-danger:hover{background:var(--danger);color:#fff}
form.inline{display:inline}

/* ---------- 提示訊息 ---------- */
.alert{padding:.7rem 1rem;border-radius:10px;margin-bottom:1rem;font-size:.92rem;text-align:left}
.alert-success{background:#e6f6ec;color:#14653c;border:1px solid #bfe6cf}
.alert-error{background:#fdecea;color:#8f2419;border:1px solid #f5c6c0}
.alert-info{background:var(--brand-light);color:var(--brand);border:1px solid #c9dcf3}
.notice{background:#fff7e8;border:1px solid #f6dfb5;color:#8a5c00;padding:.8rem 1rem;border-radius:10px}
.empty{color:var(--muted);padding:1.2rem 0;text-align:center}

/* ---------- 版面 ---------- */
.topbar{
  display:flex;align-items:center;gap:1rem;justify-content:space-between;
  background:#fff;border-bottom:1px solid var(--line);padding:.6rem 1.2rem;flex-wrap:wrap;
}
.topbar-right{display:flex;align-items:center;gap:.7rem}
.who{color:var(--muted);font-size:.9rem}
.container{max-width:1080px;margin:0 auto;padding:1.5rem 1.2rem}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem;margin-bottom:1.5rem}
.card-narrow{max-width:460px}
.quota{font-size:.85rem;color:var(--muted);font-weight:400}
.quota.is-full{color:var(--danger)}

/* ---------- 講義清單 ---------- */
.material-list{list-style:none;margin:0;padding:0}
.material{
  display:flex;align-items:center;gap:1rem;padding:.9rem 0;border-top:1px solid var(--line);flex-wrap:wrap;
}
.material:first-child{border-top:none}
.material-icon{
  flex:0 0 auto;width:48px;height:48px;border-radius:10px;display:flex;
  align-items:center;justify-content:center;font-size:.72rem;font-weight:700;color:#fff;letter-spacing:.05em;
}
.material-icon-pdf{background:#c0392b}
.material-icon-image{background:var(--brand-2)}
.material-info{flex:1 1 220px;min-width:0}
.material-info strong{display:block;word-break:break-all}
.material-info small{color:var(--muted);font-size:.82rem}
.material-actions{display:flex;gap:.5rem;align-items:center}
.upload-form{max-width:520px}

/* ---------- 後台 ---------- */
.admin-theme .topbar{background:var(--brand);border-bottom-color:var(--brand)}
.admin-theme .topbar .who{color:#cfe0f5}
.admin-theme .brand-text strong{color:#fff}
.admin-nav{display:flex;gap:1rem;flex:1}
.admin-nav a{color:#dceafa;font-size:.95rem}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-bottom:1.5rem}
.stat{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:1.1rem;text-align:center}
.stat b{display:block;font-size:1.9rem;line-height:1.1;color:var(--brand)}
.stat span{font-size:.85rem;color:var(--muted)}
.stat-warn b{color:var(--warn)}
.stat-ok b{color:var(--ok)}
.stat-off b{color:var(--muted)}

.filter-bar{display:flex;gap:.6rem;margin-bottom:1rem;flex-wrap:wrap}
.filter-bar select{width:auto;min-width:140px}
.filter-bar input[type=search]{width:auto;flex:1;min-width:180px}
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:760px}
.table th,.table td{padding:.6rem .7rem;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.table th{color:var(--muted);font-weight:600;font-size:.85rem;background:#fafcfe}
.row-actions{display:flex;gap:.35rem}
.pin-cell{
  font-size:1.05rem;letter-spacing:.14em;color:var(--brand);
  font-variant-numeric:tabular-nums;font-family:ui-monospace,Menlo,Consolas,monospace;
}
.tag{display:inline-block;padding:.15rem .55rem;border-radius:999px;font-size:.78rem}
.tag-pending{background:#fff3dc;color:#8a5c00}
.tag-active{background:#e6f6ec;color:#14653c}
.tag-suspended{background:#eef1f4;color:#5c6773}

/* ---------- 頁尾 ---------- */
.site-footer{
  text-align:center;padding:1.4rem 1rem;color:var(--muted);font-size:.82rem;
  border-top:1px solid var(--line);background:#fff;
}
.site-footer p{margin:.15rem 0}

@media (max-width:560px){
  .brand-logo{height:42px}
  .card{padding:1.1rem}
  .material-actions{width:100%;justify-content:flex-end}
}