/* 文档在线自助转换 —— 单页样式（浅色现代风） */
:root {
  --primary: #4f6ef7;
  --primary-dark: #3b55d9;
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #1f2430;
  --text-sub: #6b7280;
  --border: #e2e6ef;
  --danger: #e5484d;
  --success: #2f9e6e;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(31, 36, 48, 0.08);
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 32px 16px;
}

.container { width: 100%; max-width: 560px; }

.header { text-align: center; margin-bottom: 20px; }
.header h1 { font-size: 26px; margin-bottom: 6px; }
.subtitle { color: var(--text-sub); font-size: 14px; }

/* 配额条 */
.quota-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 12px;
  font-size: 14px;
  box-shadow: var(--shadow);
}
.quota-bar strong { color: var(--primary); }
.btn-link {
  border: none; background: none; color: var(--primary);
  cursor: pointer; font-size: 13px;
}
.btn-link:hover { text-decoration: underline; }

/* 卡密兑换 */
.redeem-box {
  display: flex; gap: 8px; margin-bottom: 12px;
}
.redeem-box input {
  flex: 1; padding: 10px 12px; font-size: 14px;
  border: 1px solid var(--border); border-radius: 10px; outline: none;
}
.redeem-box input:focus { border-color: var(--primary); }

/* 上传区 */
.dropzone {
  background: var(--card);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  margin-bottom: 16px;
  outline: none;
}
.dropzone:hover, .dropzone:focus,
.dropzone.dragover {
  border-color: var(--primary);
  background: #f7f9ff;
}
.drop-icon { font-size: 36px; margin-bottom: 10px; }
.drop-main { font-size: 15px; }
.link { color: var(--primary); cursor: pointer; }
.drop-sub { color: var(--text-sub); font-size: 13px; margin-top: 6px; }
.drop-file {
  margin-top: 10px; font-size: 14px; color: var(--primary);
  word-break: break-all;
}

/* 转换类型 */
.options { display: flex; gap: 10px; margin-bottom: 16px; }
.option { flex: 1; }
.option input { display: none; }
.option-card {
  display: block; text-align: center; padding: 12px 8px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--card); font-size: 14px; cursor: pointer;
  transition: all 0.15s;
}
.option input:checked + .option-card {
  border-color: var(--primary); color: var(--primary);
  background: #f0f3ff; font-weight: 600;
}
.option.disabled .option-card {
  opacity: 0.45; cursor: not-allowed; filter: grayscale(0.6);
}
.soon {
  display: block; font-size: 11px; font-style: normal;
  color: var(--text-sub); margin-top: 4px;
}

/* 按钮 */
.btn {
  display: inline-block; padding: 10px 20px; font-size: 14px;
  border: none; border-radius: 10px; cursor: pointer;
  background: #e8ebf3; color: var(--text);
  text-decoration: none; text-align: center;
  transition: background 0.15s;
}
.btn:hover { background: #dde2ee; }
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { background: transparent; border: 1px solid var(--border); }
.btn.big { width: 100%; padding: 14px; font-size: 16px; font-weight: 600; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 任务状态区 */
.task-box {
  margin-top: 20px; padding: 20px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  text-align: center;
}
.task-status { display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 15px; font-weight: 600; }
.task-message { color: var(--text-sub); font-size: 13px; margin: 10px 0 14px; word-break: break-all; }
.task-box .btn { margin: 0 4px 4px; }
.task-box.done .task-status { color: var(--success); }
.task-box.failed .task-status { color: var(--danger); }

.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--border); border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 页脚 */
.footer {
  margin-top: 28px; text-align: center;
  color: var(--text-sub); font-size: 12px; line-height: 1.8;
}

.hidden { display: none !important; }

/* 配额条右侧操作按钮组 */
.quota-actions { display: flex; gap: 12px; align-items: center; }

/* 页脚链接 */
.footer-link { color: var(--text-sub); }

/* 购买次数弹层 */
.modal-mask {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(31, 36, 48, 0.45);
  display: flex; justify-content: center; align-items: flex-start;
  padding: 40px 16px; overflow-y: auto;
}
.modal {
  position: relative; width: 100%; max-width: 420px;
  background: var(--card); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.modal-close {
  position: absolute; top: 10px; right: 12px;
  border: none; background: none; font-size: 22px;
  color: var(--text-sub); cursor: pointer; line-height: 1;
}
.modal-title { font-size: 18px; margin-bottom: 6px; }
.modal-sub { color: var(--text-sub); font-size: 13px; margin-bottom: 14px; }

/* 档位卡片 */
.plan-list { display: flex; gap: 10px; margin-bottom: 8px; }
.plan-card {
  flex: 1; padding: 16px 8px; text-align: center;
  border: 1px solid var(--border); border-radius: 12px;
  background: #f7f9ff; cursor: pointer; transition: all 0.15s;
  font-size: 13px; color: var(--text-sub);
}
.plan-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.plan-card strong {
  display: block; font-size: 22px; color: var(--primary); margin-bottom: 4px;
}

/* 支付信息 */
.pay-qrcode {
  display: block; width: 200px; height: 200px; margin: 8px auto;
  border: 1px solid var(--border); border-radius: 10px; object-fit: contain;
}
.pay-amount { text-align: center; font-size: 18px; font-weight: 600; margin: 8px 0 4px; }
.pay-orderno { text-align: center; font-size: 14px; margin-bottom: 8px; word-break: break-all; }
.pay-orderno strong { color: var(--primary); }
.pay-tip {
  color: var(--text-sub); font-size: 12px; background: #fff8e6;
  border: 1px solid #f2e2b8; border-radius: 8px; padding: 8px 10px; margin-bottom: 12px;
}
.claim-box { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.claim-box input {
  padding: 10px 12px; font-size: 14px;
  border: 1px solid var(--border); border-radius: 10px; outline: none;
}
.claim-box input:focus { border-color: var(--primary); }
.back-link { display: inline-block; }

/* ============ 工具宫格（对标 iLovePDF） ============ */
.container { max-width: 640px; } /* 宫格视图加宽（覆盖顶部 560px 定义） */
.tool-group { margin-bottom: 22px; }
.tool-group-title {
  font-size: 15px; font-weight: 600; margin-bottom: 10px;
  color: var(--text); padding-left: 8px; border-left: 3px solid var(--primary);
}
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}
.tool-card {
  position: relative;
  display: flex; flex-direction: column; align-items: center;
  gap: 4px; padding: 16px 10px 12px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); cursor: pointer; text-align: center;
  transition: all 0.15s; font-family: inherit;
}
.tool-card:hover {
  border-color: var(--primary); box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.tool-icon { font-size: 26px; line-height: 1; }
.tool-name { font-size: 14px; color: var(--text); }
.tool-desc { font-size: 11px; color: var(--text-sub); line-height: 1.4; }
.tool-cost { font-size: 10px; color: #8a94a6; }
.tool-card.disabled {
  opacity: 0.5; cursor: not-allowed; filter: grayscale(0.7);
  transform: none;
}
.tool-card.disabled:hover { border-color: var(--border); box-shadow: none; }
.engine-badge {
  position: absolute; top: 6px; right: 6px;
  font-style: normal; font-size: 10px;
  background: #fff0f0; color: var(--danger);
  border: 1px solid #f3c2c4; border-radius: 6px; padding: 1px 6px;
}

/* ============ 操作面板 ============ */
.back-btn { display: inline-block; margin-bottom: 10px; font-size: 14px; }
.tool-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.tool-head-icon { font-size: 34px; line-height: 1; }
.tool-head h2 { font-size: 20px; margin-bottom: 2px; }

.file-list {
  list-style: none; margin-bottom: 14px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 6px;
}
.file-list-tip { font-size: 12px; color: var(--text-sub); padding: 6px 8px; }
.file-item {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 8px; font-size: 13px;
  border-bottom: 1px dashed var(--border);
}
.file-item:last-child { border-bottom: none; }
.file-item-name { flex: 1; word-break: break-all; color: var(--text); }
.file-item-btn {
  border: 1px solid var(--border); background: #f7f9ff;
  border-radius: 6px; width: 26px; height: 24px;
  cursor: pointer; font-size: 12px; line-height: 1; color: var(--text-sub);
}
.file-item-btn:hover { border-color: var(--primary); color: var(--primary); }
.file-item-btn:disabled { opacity: 0.35; cursor: not-allowed; }

.param-form {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; margin-bottom: 14px;
  display: flex; flex-wrap: wrap; gap: 12px;
}
.param-item { display: flex; flex-direction: column; gap: 4px; flex: 1; min-width: 140px; }
.param-label { font-size: 12px; color: var(--text-sub); }
.param-item input, .param-item select {
  padding: 9px 12px; font-size: 14px;
  border: 1px solid var(--border); border-radius: 10px; outline: none;
  background: #fff; font-family: inherit;
}
.param-item input:focus, .param-item select:focus { border-color: var(--primary); }

@media (max-width: 480px) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
}