/* 任务分发平台 - 统一样式 */
:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --accent: #38bdf8;
  --accent-dim: #0ea5e9;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,.25);
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
input, button, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}
.container { max-width: 960px; margin: 0 auto; padding: 24px; }
.container-wide { max-width: 1200px; margin: 0 auto; padding: 24px; }

/* 头部 */
.header {
  background: var(--bg-card);
  border-bottom: 1px solid rgba(255,255,255,.06);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.header h1 { font-size: 1.35rem; font-weight: 600; color: var(--accent); }
.header-actions { display: flex; gap: 12px; align-items: center; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-weight: 500;
  transition: transform .15s, box-shadow .15s;
}
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn:hover:not(:disabled) { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #0f172a;
}
.btn-secondary { background: var(--bg-card-hover); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #0f172a; }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-sm { padding: 6px 14px; font-size: .9rem; }

/* 表单 */
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: .9rem;
}
.form-control {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
}
.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56,189,248,.2);
}
.form-control::placeholder { color: var(--text-muted); opacity: .8; }

/* 注册：验证码一行，输入框占大部分、按钮小且固定 */
.code-row {
  display: flex;
  gap: 12px;
  align-items: center;
}
.code-row .code-input {
  flex: 1 1 0%;
  min-width: 140px;
  max-width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  font-size: 1rem;
}
.code-row .code-btn {
  flex: 0 0 auto;
  width: 108px;
  max-width: 108px;
  padding: 10px 12px;
  font-size: 0.875rem;
  white-space: nowrap;
}
.send-code-hint { font-size: .85rem; margin-top: 6px; display: block; }

/* 卡片 */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,.06);
}
.card-title { font-size: 1.1rem; margin-bottom: 16px; color: var(--text); }
.card-body { color: var(--text-muted); }

/* 标签 */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 500;
}
.badge-primary { background: rgba(56,189,248,.25); color: var(--accent); }
.badge-success { background: rgba(52,211,153,.25); color: var(--success); }
.badge-warning { background: rgba(251,191,36,.25); color: var(--warning); }
.badge-danger { background: rgba(248,113,113,.25); color: var(--danger); }
.badge-muted { background: rgba(148,163,184,.2); color: var(--text-muted); }

/* 页面区块 */
.page-section { margin-bottom: 32px; }
.page-section h2 { font-size: 1.25rem; margin-bottom: 16px; color: var(--text); }

/* 登录/注册面板 */
.auth-panel {
  max-width: 420px;
  margin: 60px auto;
  padding: 40px;
  background: var(--bg-card);
  border-radius: 16px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.06);
}
.auth-panel h1 { text-align: center; margin-bottom: 28px; color: var(--accent); }
.auth-tabs { display: flex; margin-bottom: 24px; border-bottom: 1px solid rgba(255,255,255,.08); }
.auth-tabs button {
  flex: 1;
  padding: 12px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.auth-tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }
.auth-panel .btn { width: 100%; margin-top: 8px; padding: 12px; }

/* 任务大厅 */
.task-hall .stats {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.task-hall .stat-card {
  flex: 1;
  min-width: 160px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.06);
}
.task-hall .stat-card .num { font-size: 1.75rem; font-weight: 700; color: var(--accent); }
.task-hall .stat-card .label { font-size: .85rem; color: var(--text-muted); margin-top: 4px; }

/* 任务列表 */
.task-list { list-style: none; }
.task-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg);
  border-radius: var(--radius);
  margin-bottom: 10px;
  border: 1px solid rgba(255,255,255,.06);
}
.task-list li:hover { background: var(--bg-card-hover); }
.task-list .task-info .title { font-weight: 500; color: var(--text); }
.task-list .task-info .meta { font-size: .85rem; color: var(--text-muted); margin-top: 4px; }
.task-list .task-actions { display: flex; gap: 10px; align-items: center; }

/* 当前任务卡片 - 标题→标签→简介→状态，标签更显眼 */
.current-task-card .task-info { display: flex; flex-direction: column; gap: 18px; }
.current-task-card .task-field {
  display: block;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.current-task-card .task-field:last-child { border-bottom: none; padding-bottom: 0; }
.current-task-card .task-field-label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
  letter-spacing: .03em;
}
.current-task-card .task-field-value {
  display: block;
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.6;
}
.current-task-card .task-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}
.current-task-card .task-tags-list .badge {
  margin: 0;
  padding: 6px 14px;
  font-size: .9rem;
  background: rgba(56,189,248,.2);
  color: var(--accent);
  border: 1px solid rgba(56,189,248,.4);
}
.current-task-card .task-status-row {
  font-size: .95rem;
  color: var(--text-muted);
  margin-top: 4px;
}
.current-task-card .task-status-row .task-field-label { margin-bottom: 6px; }
.current-task-card .task-status-row .countdown { color: var(--accent); font-weight: 600; }

/* 倒计时 */
.countdown { font-variant-numeric: tabular-nums; font-weight: 600; }
.countdown.danger { color: var(--danger); }

/* 向导步骤 */
.wizard-steps {
  display: flex;
  margin-bottom: 28px;
  gap: 8px;
}
.wizard-steps .step {
  flex: 1;
  padding: 12px;
  text-align: center;
  background: var(--bg);
  border-radius: var(--radius);
  color: var(--text-muted);
  border: 1px solid rgba(255,255,255,.08);
}
.wizard-steps .step.active { border-color: var(--accent); color: var(--accent); background: rgba(56,189,248,.1); }
.wizard-steps .step.done { border-color: var(--success); color: var(--success); }

/* 仪表盘（管理端） */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}
.dashboard-grid .card-num {
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.06);
}
.dashboard-grid .card-num .num { font-size: 1.6rem; font-weight: 700; color: var(--accent); }
.dashboard-grid .card-num .label { font-size: .85rem; color: var(--text-muted); margin-top: 4px; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid rgba(255,255,255,.06); }
th { color: var(--text-muted); font-weight: 500; font-size: .9rem; }
tr:hover td { background: rgba(255,255,255,.03); }

/* 提示信息 */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius);
  margin-bottom: 16px;
}
.alert-info { background: rgba(56,189,248,.15); color: var(--accent); border: 1px solid rgba(56,189,248,.3); }
.alert-success { background: rgba(52,211,153,.15); color: var(--success); }
.alert-danger { background: rgba(248,113,113,.15); color: var(--danger); }
.text-danger, .danger { color: var(--danger); }
.alert-warning { background: rgba(251,191,36,.15); color: var(--warning); }

/* 隐藏 */
.hide { display: none !important; }
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mb-2 { margin-bottom: 8px; }

/* 上传区域 */
.upload-zone {
  border: 2px dashed rgba(255,255,255,.2);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.upload-zone:hover, .upload-zone.dragover { border-color: var(--accent); background: rgba(56,189,248,.08); }
.upload-zone input[type=file] { display: none; }
.upload-preview { max-width: 200px; max-height: 200px; margin-top: 12px; border-radius: var(--radius); }
.progress-bar-wrap { height: 8px; background: rgba(255,255,255,.15); border-radius: 4px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--accent); border-radius: 4px; transition: width .2s; }
.mt-1 { margin-top: 6px; }
.mt-2 { margin-top: 12px; }