/* 讲师审片平台 · 视觉沿用讲师包：深蓝 #1e3a8a / 强调橙 #f97316 / 底 #f6f8fc */
:root {
  --primary: #1e3a8a;
  --primary-light: #2d4ba8;
  --accent: #f97316;
  --accent-dark: #ea6a0a;
  --bg: #f6f8fc;
  --card: #ffffff;
  --text: #1e293b;
  --text-2: #64748b;
  --border: #e2e8f0;
  --danger: #dc2626;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(30, 58, 138, .08), 0 4px 14px rgba(30, 58, 138, .06);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.hidden { display: none !important; }

/* ---------- 首屏加载 ---------- */
.booting {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--bg);
  color: var(--text-2);
}
.booting-logo {
  width: 52px; height: 52px;
  border-radius: 15px;
  background: var(--primary);
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .55; } }

/* ---------- 登录 ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eef2fb 0%, #f6f8fc 55%, #fdeee2 100%);
}
.login-card {
  width: 380px;
  background: var(--card);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 40px 36px 32px;
  text-align: center;
}
.login-logo {
  width: 56px; height: 56px;
  margin: 0 auto 14px;
  border-radius: 16px;
  background: var(--primary);
  color: #fff;
  font-size: 28px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.login-card h1 { font-size: 22px; color: var(--primary); }
.login-sub { color: var(--text-2); font-size: 13px; margin: 8px 0 22px; }

.portal-tabs {
  display: flex;
  background: var(--bg);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 8px;
}
.portal-tab {
  flex: 1;
  border: none;
  background: transparent;
  padding: 9px 0;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-2);
  cursor: pointer;
  font-family: inherit;
}
.portal-tab.active { background: var(--card); color: var(--primary); font-weight: 600; box-shadow: 0 1px 4px rgba(30,58,138,.12); }
.portal-hint { font-size: 12px; color: var(--text-2); margin-bottom: 18px; }

.login-form input {
  width: 100%;
  padding: 11px 14px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
}
.login-form input:focus { outline: 2px solid rgba(30, 58, 138, .25); border-color: var(--primary); }
.login-error { color: var(--danger); font-size: 13px; min-height: 18px; margin-bottom: 6px; text-align: left; }

/* ---------- 按钮 ---------- */
.btn {
  border: none;
  border-radius: 10px;
  padding: 9px 18px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: filter .15s;
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-ghost { background: transparent; color: var(--text-2); border: 1px solid var(--border); }
.btn-danger { background: #fee2e2; color: var(--danger); }
.btn-block { width: 100%; padding: 12px; font-size: 15px; letter-spacing: 2px; }
.btn-sm { padding: 5px 12px; font-size: 13px; border-radius: 8px; }

/* ---------- 主框架 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 28px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  height: 58px;
}
.brand { font-size: 17px; font-weight: 700; color: var(--primary); white-space: nowrap; }
.nav { display: flex; gap: 4px; flex: 1; }
.nav button {
  border: none; background: transparent;
  padding: 8px 16px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--text-2);
  cursor: pointer;
  font-family: inherit;
}
.nav button:hover { background: var(--bg); color: var(--primary); }
.nav button.active { background: rgba(30, 58, 138, .08); color: var(--primary); font-weight: 600; }
.user-box { display: flex; align-items: center; gap: 10px; }
.role-badge {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(249, 115, 22, .12);
  color: var(--accent-dark);
  font-weight: 600;
}
.role-badge.admin { background: rgba(30, 58, 138, .1); color: var(--primary); }
.user-name { color: var(--text); font-weight: 600; }

.content { max-width: 1180px; margin: 0 auto; padding: 26px 24px 60px; }

.section-title { font-size: 18px; color: var(--primary); margin-bottom: 4px; }
.section-desc { color: var(--text-2); font-size: 13px; margin-bottom: 20px; }
.empty {
  text-align: center;
  color: var(--text-2);
  padding: 70px 0;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

/* ---------- 图片宫格 ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.gallery figure {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: zoom-in;
  transition: transform .15s;
}
.gallery figure:hover { transform: translateY(-3px); }
.gallery img { width: 100%; height: 170px; object-fit: cover; display: block; background: #eef1f7; }
.gallery figcaption { padding: 10px 12px; font-size: 13px; }
.gallery figcaption .t { font-weight: 600; }
.gallery figcaption .n { color: var(--text-2); font-size: 12px; margin-top: 2px; }

/* ---------- 视频卡片 ---------- */
.video-list { display: flex; flex-direction: column; gap: 18px; }
.video-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.video-card video { width: 100%; max-height: 520px; background: #0f172a; display: block; }
.video-meta { padding: 14px 18px; }
.video-meta .t { font-weight: 600; font-size: 15px; }
.video-meta .n { color: var(--text-2); font-size: 13px; margin-top: 4px; }

/* ---------- 文档卡片 ---------- */
.doc-list { display: flex; flex-direction: column; gap: 12px; }
.doc-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 18px;
}
.doc-icon { font-size: 30px; }
.doc-info { flex: 1; min-width: 0; }
.doc-info .t { font-weight: 600; font-size: 15px; }
.doc-info .n { color: var(--text-2); font-size: 12px; margin-top: 3px; }

/* ---------- 大图预览 ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(15, 23, 42, .88);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  cursor: zoom-out;
}
.lightbox img { max-width: 92vw; max-height: 86vh; border-radius: 8px; }
.lightbox-caption { color: #e2e8f0; margin-top: 14px; font-size: 14px; }

/* ---------- 管理面板 ---------- */
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) { .admin-grid { grid-template-columns: 1fr; } }
.panel {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
}
.panel h3 { font-size: 15px; color: var(--primary); margin-bottom: 14px; }
.panel h3 .sub { font-size: 12px; color: var(--text-2); font-weight: 400; margin-left: 8px; }

.storage-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px;
  background: var(--bg);
  border-radius: 10px;
  margin-bottom: 10px;
  font-size: 13px;
}
.storage-row .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 8px; }
.storage-row .dot.ok { background: #16a34a; }
.storage-row .dot.no { background: var(--danger); }
.storage-row .msg { color: var(--text-2); font-size: 12px; }

.form-row { display: flex; gap: 10px; margin-bottom: 10px; }
.form-row input, .form-row select {
  flex: 1;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 13px;
  font-family: inherit;
  background: #fff;
  min-width: 0;
}
.form-row input:focus, .form-row select:focus { outline: 2px solid rgba(30,58,138,.2); border-color: var(--primary); }
.form-msg { font-size: 12px; color: var(--accent-dark); min-height: 16px; margin: 4px 0 8px; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th {
  text-align: left;
  color: var(--text-2);
  font-weight: 500;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.tbl td { padding: 9px 10px; border-bottom: 1px solid var(--bg); vertical-align: middle; }
.tbl tr:hover td { background: #fafbfe; }
.tbl .title-cell { max-width: 220px; }
.tbl .title-cell .n { color: var(--text-2); font-size: 12px; }
.tag {
  display: inline-block;
  font-size: 12px;
  padding: 2px 9px;
  border-radius: 6px;
  background: rgba(30,58,138,.08);
  color: var(--primary);
  white-space: nowrap;
}
.tag.off { background: #f1f5f9; color: var(--text-2); }
.ops { display: flex; gap: 6px; white-space: nowrap; }
.ops button { border: none; background: transparent; color: var(--primary); cursor: pointer; font-size: 13px; font-family: inherit; padding: 2px 4px; }
.ops button.del { color: var(--danger); }
.ops button:hover { text-decoration: underline; }