/* ========================================
   TXT 计算平台 - 深蓝黑 + 橙色主题
   配色参考 EBSDPro
   ======================================== */

:root {
  --primary: #FF6B35;
  --primary-dark: #e55a2b;
  --primary-light: rgba(255, 107, 53, 0.15);
  --bg-dark: #0B1121;
  --bg-mid: #1A2A4A;
  --gradient-bg: linear-gradient(135deg, #0B1121 0%, #1A2A4A 100%);
  --card: rgba(255, 255, 255, 0.05);
  --card-hover: rgba(255, 255, 255, 0.08);
  --card-solid: #162236;
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 107, 53, 0.5);
  --text: #ffffff;
  --text-light: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);
  --text-dim: rgba(255, 255, 255, 0.4);
  --success: #4ade80;
  --success-light: rgba(74, 222, 128, 0.15);
  --danger: #f87171;
  --danger-light: rgba(248, 113, 113, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Microsoft YaHei', sans-serif;
  background: var(--gradient-bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  padding: 20px;
}

/* ===== Header ===== */
.app-header {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  margin-bottom: 20px;
}
.header-left { display: flex; align-items: center; gap: 14px; }
.header-right { display: flex; align-items: center; gap: 12px; }
.logo { color: var(--primary); flex-shrink: 0; }
.app-header h1 { font-size: 20px; font-weight: 700; color: #fff; }
.app-header h1 span { color: var(--primary); }
.subtitle { font-size: 12px; color: var(--text-light); }

/* Header 按钮 */
.app-header .btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-light);
  border: 1px solid var(--border);
  backdrop-filter: blur(4px);
}
.app-header .btn-ghost:hover {
  background: var(--primary-light);
  border-color: var(--border-hover);
  color: var(--primary);
}

/* ===== 用户菜单 ===== */
.user-menu { position: relative; }
.user-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-light);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  transition: all 0.2s ease;
}
.user-trigger:hover {
  background: var(--primary-light);
  border-color: var(--border-hover);
  color: var(--primary);
}
.user-trigger svg { flex-shrink: 0; }
.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 170px;
  background: var(--card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.18s ease;
  z-index: 20;
}
.user-menu:hover .user-dropdown,
.user-menu.open .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-light);
  text-decoration: none;
  transition: all 0.12s ease;
}
.dropdown-item:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.dropdown-item.danger:hover { background: var(--danger-light); color: var(--danger); }

/* ===== Container ===== */
.container {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-bottom: 40px;
}

/* ===== Card ===== */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(8px);
}
.card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.card-title h2 { font-size: 16px; font-weight: 600; color: #fff; }
.step {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}
.step-done { background: var(--success); }
.badge {
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.06);
  padding: 3px 12px;
  border-radius: 50px;
  border: 1px solid var(--border);
}

/* ===== 计算程序卡片 ===== */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.calc-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: all 0.25s ease;
  background: var(--card);
}
.calc-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  background: var(--card-hover);
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.1);
}
.calc-item.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.2);
}
.calc-item.selected::after {
  content: "✓ 已选中";
  display: inline-block;
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  margin-top: 6px;
}
.calc-item-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.calc-item-name { font-weight: 600; font-size: 15px; color: #fff; }
.calc-item-id { font-size: 11px; color: var(--text-muted); font-family: monospace; background: rgba(255,255,255,0.06); padding: 2px 6px; border-radius: 4px; }
.calc-item-desc { font-size: 13px; color: var(--text-light); margin-top: 8px; }
.calc-item-author { font-size: 11px; color: var(--text-dim); margin-top: 8px; }
.loading-hint { color: var(--text-muted); font-size: 14px; padding: 12px 0; }

/* ===== 双文件上传 ===== */
.upload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.upload-box {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--card);
}
.upload-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 28px 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-muted);
}
.upload-area:hover, .upload-area.dragover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}
.upload-text { font-size: 13px; }
.upload-text .link { color: var(--primary); font-weight: 600; }
.upload-hint { font-size: 11px; color: var(--text-dim); margin-top: 4px; }
.upload-file-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--success-light);
  border: 1px solid rgba(74, 222, 128, 0.3);
  border-radius: 8px;
  font-size: 13px;
}
.upload-file-info .fname { font-weight: 600; color: var(--success); }
.upload-file-info .fsize { color: var(--text-muted); font-size: 11px; }
.clear-file { margin-left: auto; font-size: 18px; padding: 0 4px; color: var(--text-muted); }
.clear-file:hover { color: var(--danger); }

/* 旧的拖拽上传（保留兼容） */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 42px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-muted);
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}
.drop-zone svg { margin-bottom: 10px; }
.drop-text { font-size: 15px; }
.drop-text .link { color: var(--primary); font-weight: 600; }
.drop-hint { font-size: 12px; color: var(--text-dim); margin-top: 6px; }

.file-info {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  padding: 12px 16px;
  background: var(--success-light);
  border-radius: 8px;
  font-size: 14px;
}
.file-info #fileName { font-weight: 600; color: var(--success); }
.file-info #fileSize { color: var(--text-muted); font-size: 12px; }
.btn-icon {
  margin-left: auto;
  border: none;
  background: none;
  font-size: 20px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}
.btn-icon:hover { color: var(--danger); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  border-radius: 50px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}
.btn-primary:disabled { background: rgba(255,255,255,0.1); color: var(--text-dim); cursor: not-allowed; box-shadow: none; }
.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-light);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

.actions-card { display: flex; align-items: center; gap: 14px; }
.action-hint { font-size: 13px; color: var(--text-muted); }

/* ===== 结果展示 ===== */
.tab-group { margin-left: auto; display: flex; gap: 4px; }
.tab {
  border: 1px solid var(--border);
  background: var(--card);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-muted);
  font-family: inherit;
  transition: all 0.15s ease;
}
.tab:hover { color: var(--text-light); border-color: var(--text-muted); }
.tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.result-view { margin-top: 4px; }
.result-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}
.summary-chip {
  background: var(--primary-light);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid rgba(255, 107, 53, 0.2);
}
.summary-chip strong { font-weight: 700; }
.result-table-wrap { overflow-x: auto; border-radius: var(--radius-sm); }
.result-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.result-table th, .result-table td {
  text-align: right;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.result-table th {
  background: rgba(255, 255, 255, 0.06);
  font-weight: 600;
  color: var(--text-light);
  position: sticky;
  top: 0;
}
.result-table th:first-child, .result-table td:first-child { text-align: left; }
.result-table tr:hover td { background: rgba(255, 255, 255, 0.04); }
.result-table .value-list { font-family: monospace; font-size: 13px; word-break: break-all; }
.result-table .value-number { font-family: monospace; font-weight: 600; color: var(--primary); }

#resultJson {
  background: rgba(0, 0, 0, 0.3);
  color: #c8d3e0;
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 13px;
  font-family: "SFMono-Regular", Consolas, monospace;
  overflow-x: auto;
  line-height: 1.5;
  max-height: 500px;
}
#resultCsv {
  background: rgba(0, 0, 0, 0.3);
  color: #c8d3e0;
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 12px;
  font-family: "SFMono-Regular", Consolas, monospace;
  overflow: auto;
  line-height: 1.5;
  max-height: 500px;
  white-space: pre;
}

.result-actions { margin-top: 16px; display: flex; gap: 10px; }

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--card-solid);
  color: #fff;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 100;
  max-width: 90%;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: rgba(248, 113, 113, 0.9); border-color: var(--danger); }
.toast.success { background: rgba(74, 222, 128, 0.9); border-color: var(--success); }

/* ===== 响应式 ===== */
@media (max-width: 600px) {
  body { padding: 12px; }
  .app-header { padding: 14px 18px; flex-direction: column; gap: 10px; align-items: flex-start; }
  .container { padding: 0; }
  .card { padding: 18px; }
  .calc-grid { grid-template-columns: 1fr; }
  .upload-grid { grid-template-columns: 1fr; }
  .result-table th { width: auto; }
}