/* ── 按钮 ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s, opacity 0.2s;
  white-space: nowrap;
  text-decoration: none;
}

.btn:active:not(:disabled) { transform: scale(0.97); }

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--color-primary-dark); }

.btn-secondary {
  background: #f0f0f0;
  color: var(--color-text);
}
.btn-secondary:hover:not(:disabled) { background: #e0e0e0; }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}
.btn-danger:hover:not(:disabled) { background: #b02a37; }

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

/* ── 表单组 ──────────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: #555;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-family: var(--font-family);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  background: var(--color-surface);
  color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,111,196,0.12);
}

.form-group textarea { resize: vertical; min-height: 100px; }

/* 输入框错误状态 */
.input-error {
  border-color: var(--color-danger) !important;
  box-shadow: 0 0 0 3px rgba(220,53,69,0.1) !important;
}

/* 字段错误提示 */
.field-error {
  display: none;
  font-size: 12px;
  color: var(--color-danger);
  margin-top: 4px;
}
.field-error.visible { display: block; }

/* ── 卡片 ────────────────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

/* ── 徽章 ────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
}

/* 状态徽章 */
.badge-draft     { background: #f0f0f0; color: #666; }
.badge-published { background: #e6f4ea; color: var(--color-success); }
.badge-rejected  { background: #fde8e8; color: var(--color-danger); }
.badge-pending   { background: #fff8e1; color: var(--color-pending); }
.badge-approved  { background: #e6f4ea; color: var(--color-success); }

/* 类型徽章 */
.badge-notice   { background: #e8f0fe; color: var(--color-primary); }
.badge-supply   { background: #e6f4ea; color: var(--color-success); }
.badge-activity { background: #fff3e0; color: var(--color-warning); }
.badge-training { background: #f3e8ff; color: #7c3aed; }
.badge-report   { background: #fef9e7; color: #b7791f; }

/* ── Toast 通知 ──────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #333;
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
  z-index: 9999;
  max-width: 360px;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast.success { background: var(--color-success); }
.toast.error   { background: var(--color-danger); }

/* ── 加载旋转 ─────────────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

.spinner-dark {
  border-color: rgba(0,0,0,0.15);
  border-top-color: var(--color-primary);
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── 步骤条 ──────────────────────────────────────────────────────────────── */
.stepper {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 32px;
  overflow-x: auto;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.step-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #e0e0e0;
  color: #999;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  transition: background 0.2s, color 0.2s;
}

.step.active .step-circle {
  background: var(--color-primary);
  color: #fff;
}

.step.done .step-circle {
  background: var(--color-success);
  color: #fff;
}

.step-label {
  font-size: 12px;
  color: #999;
  white-space: nowrap;
}

.step.active .step-label { color: var(--color-primary); font-weight: 600; }
.step.done  .step-label  { color: var(--color-success); }

.step-line {
  flex: 1;
  height: 2px;
  background: #e0e0e0;
  min-width: 24px;
  margin-bottom: 18px;
  transition: background 0.2s;
}

.step-line.done { background: var(--color-success); }

/* ── 上传区域 ─────────────────────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  color: var(--color-text-muted);
  font-size: 14px;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--color-primary);
  background: rgba(26,111,196,0.04);
  color: var(--color-primary);
}

/* ── Tab 栏 ──────────────────────────────────────────────────────────────── */
.tab-bar {
  display: flex;
  gap: 0;
  padding: 0 20px;
  border-bottom: 1px solid #f0f0f0;
  background: var(--color-surface);
  overflow-x: auto;
}

.tab-btn {
  padding: 14px 20px;
  border: none;
  background: none;
  font-size: 14px;
  font-weight: 500;
  color: #666;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}

.tab-btn:hover { color: var(--color-primary); }

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

/* ── 状态/空/错误占位 ────────────────────────────────────────────────────── */
.state-loading,
.state-empty,
.state-error {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.state-loading::before {
  content: '';
  display: block;
  width: 36px;
  height: 36px;
  border: 3px solid #e0e0e0;
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 14px;
}

.state-empty::before { content: '📭'; display: block; font-size: 40px; margin-bottom: 12px; }
.state-error::before { content: '⚠️'; display: block; font-size: 40px; margin-bottom: 12px; }