/* ========== 管理后台样式 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0b1020;
  --card: rgba(30, 41, 59, 0.6);
  --card-border: rgba(148, 163, 184, 0.18);
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --accent: #38bdf8;
  --green: #34d399;
  --yellow: #fbbf24;
  --red: #f87171;
  --purple: #a78bfa;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}
.glow-1 { width: 400px; height: 400px; background: #38bdf8; top: -100px; left: -100px; }
.glow-2 { width: 350px; height: 350px; background: #a855f7; bottom: -100px; right: -100px; }

.hidden { display: none !important; }

/* ---------- 通用按钮 ---------- */
.btn-primary {
  background: linear-gradient(135deg, #38bdf8, #6366f1);
  border: none;
  color: #fff;
  padding: 11px 26px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(56, 189, 248, 0.35); }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-dim);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}
.btn-ghost:hover { color: var(--text); border-color: var(--accent); }

/* ========== 登录视图 ========== */
.login-view {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
  z-index: 1;
}
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 40px 32px;
  text-align: center;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.login-logo { font-size: 44px; margin-bottom: 12px; }
.login-card h1 { font-size: 22px; margin-bottom: 4px; }
.login-sub { font-size: 13px; color: var(--text-dim); margin-bottom: 24px; }
.login-card input {
  width: 100%;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text);
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.login-card input:focus { border-color: var(--accent); }
.login-card .btn-primary { width: 100%; }
.login-tip { min-height: 18px; font-size: 13px; color: var(--red); margin-top: 10px; }
.login-back { display: block; margin-top: 16px; font-size: 13px; color: var(--text-dim); text-decoration: none; }
.login-back:hover { color: var(--accent); }

/* ========== 管理视图 ========== */
.admin-view { position: relative; z-index: 1; }

.admin-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 20px;
  background: rgba(11, 16, 32, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--card-border);
  flex-wrap: wrap;
}
.admin-brand { font-weight: 700; font-size: 15px; }
.admin-nav { display: flex; gap: 6px; flex-wrap: wrap; }
.nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: 9px;
  font-size: 13.5px;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-btn:hover { color: var(--text); background: rgba(148, 163, 184, 0.1); }
.nav-btn.active {
  color: var(--accent);
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.3);
}
.admin-top-right { display: flex; gap: 8px; }

.admin-main {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

.tab-panel { display: flex; flex-direction: column; gap: 16px; }
.tab-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.tab-head h2 { font-size: 19px; }

.filter-group { display: flex; gap: 6px; }
.filter-btn {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover { color: var(--text); }
.filter-btn.active { background: rgba(56, 189, 248, 0.15); color: var(--accent); border-color: rgba(56, 189, 248, 0.4); }

.placeholder { text-align: center; color: var(--text-dim); padding: 40px 0; font-size: 14px; }

/* ---------- 留言列表 ---------- */
.msg-list { display: flex; flex-direction: column; gap: 12px; }
.msg-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.msg-item.pending { border-left: 3px solid var(--yellow); }
.msg-item.approved { border-left: 3px solid var(--green); }
.msg-item.hidden { border-left: 3px solid var(--text-dim); opacity: 0.75; }

.msg-main { flex: 1; min-width: 240px; }
.msg-nick { font-size: 14px; font-weight: 700; color: var(--accent); margin-right: 8px; }
.msg-time { font-size: 12px; color: var(--text-dim); }
.msg-content { font-size: 14px; line-height: 1.7; margin-top: 6px; word-break: break-word; }
.msg-ip { font-size: 12px; color: var(--text-dim); margin-top: 8px; font-family: monospace; }

.msg-actions { display: flex; gap: 8px; align-items: flex-start; flex-wrap: wrap; }
.btn-sm {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 12.5px;
  border: 1px solid var(--card-border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s;
}
.btn-sm:hover { color: var(--text); border-color: var(--accent); }
.btn-sm.ok { color: var(--green); }
.btn-sm.ok:hover { border-color: var(--green); background: rgba(52, 211, 153, 0.1); }
.btn-sm.warn { color: var(--yellow); }
.btn-sm.warn:hover { border-color: var(--yellow); background: rgba(251, 191, 36, 0.1); }
.btn-sm.danger { color: var(--red); }
.btn-sm.danger:hover { border-color: var(--red); background: rgba(248, 113, 113, 0.1); }

/* ---------- 音乐/账号管理 ---------- */
.admin-upload { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.admin-upload input {
  background: rgba(15,23,42,0.7);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 13.5px;
  outline: none;
}
.admin-upload input:focus { border-color: var(--accent); }
.admin-upload input[type="text"] { flex: 1; min-width: 130px; }
.admin-upload-status { font-size: 12.5px; color: var(--green); min-height: 16px; width: 100%; }

/* ---------- 实时监控 ---------- */
.mon-info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.mon-info-item { background: rgba(15,23,42,0.6); border: 1px solid var(--card-border); border-radius: 12px; padding: 12px 14px; display: flex; flex-direction: column; gap: 5px; }
.mon-info-item .label { font-size: 11.5px; color: var(--text-dim); }
.mon-info-item .value { font-size: 14px; font-weight: 600; word-break: break-all; }
.mon-info-item .mono { font-family: "SF Mono", Consolas, monospace; }

.mon-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-bottom: 16px; }
.mon-metric { background: rgba(15,23,42,0.6); border: 1px solid var(--card-border); border-radius: 14px; padding: 16px; }
.mon-metric-head { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-dim); margin-bottom: 10px; }
.mon-metric-head .big-num { font-size: 24px; font-weight: 700; color: var(--text); font-family: monospace; }
.mon-bar { height: 7px; background: rgba(10,14,28,0.8); border-radius: 4px; overflow: hidden; }
.mon-bar-fill { height: 100%; background: linear-gradient(90deg, #38bdf8, #6366f1); transition: width 0.6s; border-radius: 4px; }
.mon-bar-mem { background: linear-gradient(90deg, #a78bfa, #ec4899); }
.mon-bar-disk { background: linear-gradient(90deg, #f59e0b, #f97316); }
.mon-meta { display: flex; justify-content: space-between; margin-top: 8px; font-size: 11.5px; color: var(--text-dim); }

.mon-svc { display: flex; flex-direction: column; gap: 8px; }
.mon-svc-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; background: rgba(15,23,42,0.6); border-radius: 10px; font-size: 13.5px; }

/* ---------- 图表 ---------- */
.stats-hint { font-size: 12.5px; color: var(--text-dim); }
.chart-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 18px;
}
.chart-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; font-size: 14px; font-weight: 600; }
.chart-now { font-size: 13px; color: var(--text-dim); font-family: monospace; }
.chart { width: 100%; height: 180px; background: rgba(15, 23, 42, 0.5); border-radius: 8px; }
.chart-grid { stroke: rgba(148, 163, 184, 0.12); stroke-width: 1; }
.chart-line { fill: none; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.chart-area { opacity: 0.15; }
.chart-dot { r: 2.5; }

/* ---------- 黑名单 ---------- */
.bl-form { display: flex; gap: 10px; flex-wrap: wrap; }
.bl-form input {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text);
  padding: 11px 14px;
  font-size: 13.5px;
  outline: none;
  flex: 1;
  min-width: 160px;
}
.bl-form input:focus { border-color: var(--accent); }
.bl-tip { min-height: 18px; font-size: 12.5px; color: var(--green); }
.bl-list { display: flex; flex-direction: column; gap: 10px; }
.bl-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.bl-ip { font-family: monospace; font-weight: 700; font-size: 14px; }
.bl-reason { font-size: 12.5px; color: var(--text-dim); margin-top: 3px; }
.bl-time { font-size: 12px; color: var(--text-dim); }

@media (max-width: 640px) {
  .admin-topbar { flex-direction: column; align-items: flex-start; }
  .msg-actions { width: 100%; }
}