:root {
  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --ok: #22c55e;
  --warn: #f59e0b;
  --err: #ef4444;
  --radius: 16px;
  --radius-sm: 10px;
}

/* ===== 深色(默认) ===== */
[data-theme="dark"] {
  --bg: #07090f;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, rgba(99,102,241,.18), transparent 60%),
             radial-gradient(900px 500px at 0% 10%, rgba(139,92,246,.12), transparent 55%);
  --surface: rgba(20, 24, 38, 0.72);
  --surface-2: rgba(30, 35, 54, 0.6);
  --border: rgba(255,255,255,0.08);
  --text: #e7e9f3;
  --text-dim: #9aa0b5;
  --shadow: 0 20px 60px rgba(0,0,0,.45);
}

/* ===== 浅色 ===== */
[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, rgba(99,102,241,.12), transparent 60%),
             radial-gradient(900px 500px at 0% 10%, rgba(139,92,246,.10), transparent 55%);
  --surface: rgba(255,255,255,0.85);
  --surface-2: rgba(245,247,252,0.9);
  --border: rgba(20,30,60,0.10);
  --text: #14182a;
  --text-dim: #5b6378;
  --shadow: 0 20px 50px rgba(40,50,90,.12);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  background-image: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }

/* ===== 登录 ===== */
.login-screen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); background-image: var(--bg-grad);
  z-index: 50;
}
.login-card {
  width: min(380px, 90vw);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}
.login-logo { font-size: 54px; }
.login-title {
  margin: 10px 0 4px; font-size: 28px; letter-spacing: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.login-sub { color: var(--text-dim); margin: 0 0 24px; font-size: 14px; }
.login-form { display: flex; flex-direction: column; gap: 12px; }
.login-form input {
  padding: 13px 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text); font-size: 15px; outline: none;
}
.login-form input:focus { border-color: var(--accent); }
.login-form button {
  padding: 13px; border: 0; border-radius: var(--radius-sm); cursor: pointer;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff; font-size: 16px; font-weight: 600; transition: transform .1s;
}
.login-form button:active { transform: scale(.98); }
.login-error { color: var(--err); min-height: 18px; font-size: 13px; margin: 8px 0 0; }

/* ===== 顶栏 ===== */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--border);
  background: var(--surface); backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { font-size: 30px; }
.brand-name { font-weight: 700; font-size: 18px; letter-spacing: 1px; }
.brand-sub { font-size: 12px; color: var(--text-dim); }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.icon-btn, .ghost-btn {
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  border-radius: var(--radius-sm); padding: 8px 12px; cursor: pointer; font-size: 14px;
}
.icon-btn { padding: 8px 10px; }
.ghost-btn:hover, .icon-btn:hover { border-color: var(--accent); }

/* ===== 布局 ===== */
.layout {
  display: grid; grid-template-columns: 1fr 340px; gap: 20px;
  padding: 22px; max-width: 1280px; margin: 0 auto; align-items: start;
}
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; padding: 14px; }
}

/* ===== 上传面板 ===== */
.dropzone {
  border: 2px dashed var(--border); border-radius: var(--radius);
  background: var(--surface); padding: 38px 20px; text-align: center;
  transition: all .2s; cursor: pointer; outline: none;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--accent); }
.dropzone.drag {
  border-color: var(--accent); background: var(--surface-2);
  transform: scale(1.01); box-shadow: 0 0 0 4px rgba(99,102,241,.15);
}
.dz-inner { pointer-events: none; }
.dz-icon { font-size: 46px; }
.dz-title { font-size: 20px; font-weight: 600; margin: 8px 0 4px; }
.dz-hint { color: var(--text-dim); font-size: 14px; }
.dz-buttons { display: flex; gap: 12px; justify-content: center; margin: 18px 0 12px; pointer-events: auto; }
.dz-paste-hint { color: var(--text-dim); font-size: 12px; }

.primary-btn, .secondary-btn {
  border: 0; border-radius: var(--radius-sm); padding: 11px 20px; cursor: pointer;
  font-size: 15px; font-weight: 600; transition: transform .1s, opacity .2s;
}
.primary-btn { background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #fff; }
.secondary-btn { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.primary-btn:active, .secondary-btn:active { transform: scale(.97); }

/* ===== 队列 ===== */
.queue-head {
  display: flex; align-items: center; justify-content: space-between;
  margin: 22px 2px 10px;
}
.queue-head > span { font-weight: 600; font-size: 16px; }
.queue-tools { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.global-stats { color: var(--text-dim); font-size: 13px; }
.tiny-btn {
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text-dim);
  border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 12px;
}
.tiny-btn:hover { color: var(--text); border-color: var(--accent); }

.queue { display: flex; flex-direction: column; gap: 12px; }
.queue-empty, .recent-empty {
  color: var(--text-dim); text-align: center; padding: 30px 10px; font-size: 14px;
  border: 1px dashed var(--border); border-radius: var(--radius-sm);
}

.item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 16px;
  display: grid; grid-template-columns: 44px 1fr auto; gap: 14px; align-items: center;
}
.item-thumb {
  width: 44px; height: 44px; border-radius: 8px; object-fit: cover;
  background: var(--surface-2); display: flex; align-items: center; justify-content: center;
  font-size: 22px; overflow: hidden;
}
.item-body { min-width: 0; }
.item-name { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-meta { color: var(--text-dim); font-size: 12px; margin-top: 3px; display: flex; gap: 10px; flex-wrap: wrap; }
.bar { height: 7px; border-radius: 6px; background: var(--surface-2); margin-top: 9px; overflow: hidden; }
.bar > i {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .25s ease;
}
.item-actions { display: flex; gap: 6px; }
.item-btn {
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  border-radius: 8px; width: 34px; height: 34px; cursor: pointer; font-size: 14px;
}
.item-btn:hover { border-color: var(--accent); }
.item.status-done .bar > i { background: var(--ok); }
.item.status-error .bar > i { background: var(--err); }
.item.status-paused .bar > i { background: var(--warn); }
.status-tag {
  font-size: 11px; padding: 2px 8px; border-radius: 20px; margin-left: 6px;
}
.tag-done { background: rgba(34,197,94,.15); color: var(--ok); }
.tag-error { background: rgba(239,68,68,.15); color: var(--err); }
.tag-paused { background: rgba(245,158,11,.15); color: var(--warn); }
.tag-uploading { background: rgba(99,102,241,.15); color: var(--accent); }

/* ===== 最近上传 ===== */
.recent-panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; position: sticky; top: 84px;
}
.recent-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; font-weight: 600; }
.recent-list { display: flex; flex-direction: column; gap: 8px; max-height: 70vh; overflow: auto; }
.recent-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px;
  border-radius: 10px; background: var(--surface-2);
}
.recent-ico { font-size: 20px; }
.recent-info { min-width: 0; flex: 1; }
.recent-name { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.recent-sub { font-size: 11px; color: var(--text-dim); }

/* ===== Toast ===== */
.toasts { position: fixed; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 10px; z-index: 80; }
.toast {
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  border-radius: 12px; padding: 12px 16px; box-shadow: var(--shadow);
  font-size: 14px; min-width: 220px; max-width: 340px;
  animation: slideIn .25s ease; backdrop-filter: blur(10px);
}
.toast.ok { border-left: 3px solid var(--ok); }
.toast.err { border-left: 3px solid var(--err); }
.toast.info { border-left: 3px solid var(--accent); }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }