:root {
  --bg: #e9eaec;
  --panel: #f7f7f8;
  --text: #2d3138;
  --muted: #7a7f87;
  --line: #d6d9de;
  --input-border: #c7ccd3;
  --btn-primary: #0e80f1;
  --btn-primary-hover: #066ed4;
  --upload-bg: #e4f0ff;
  --fs-display: 44px;
  --fs-section: 30px;
  --fs-label: 14px;
  --fs-input: 16px;
  --fs-body: 15px;
  --fs-meta: 12px;
  --fs-button: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}

.page {
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  padding: 20px 24px 36px;
}

.panel {
  width: 100%;
  max-width: 980px;
  min-height: calc(100dvh - 40px);
  background: var(--panel);
  padding: 28px 36px 36px;
  border: 1px solid #d9dce1;
}

.header {
  display: block;
  margin-bottom: 20px;
}

.logo-row {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 12px;
}

.title-block h1 {
  margin: 0;
  font-size: var(--fs-display);
  line-height: 1.2;
  font-weight: 700;
}

.logo {
  width: 180px;
  height: auto;
  object-fit: contain;
}

.generator-form {
  display: grid;
  gap: 10px;
}

.field-label {
  font-size: var(--fs-label);
  color: #5f6369;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.2px;
}

.text-input,
.text-area {
  width: 100%;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background: #f0f1f3;
  padding: 10px 14px;
  font-size: var(--fs-input);
  line-height: 1.5;
  color: #2f3338;
  outline: none;
}

.text-input::placeholder,
.text-area::placeholder {
  color: #9aa0a8;
}

.text-area {
  min-height: 120px;
  resize: vertical;
}

.attachments,
.generated {
  margin-top: 18px;
}

.section-title {
  margin: 0;
  font-size: var(--fs-section);
  line-height: 1.25;
  font-weight: 700;
  color: #5a5f66;
}

.section-subtitle {
  margin: 2px 0 10px;
  color: #838992;
  font-size: var(--fs-label);
  line-height: 1.4;
}

.upload-form {
  margin-bottom: 10px;
}

#file-input {
  display: none;
}

.upload-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  font-size: var(--fs-button);
  font-weight: 600;
  color: #2d84de;
  border: 1px solid #d7e6fa;
  border-radius: 8px;
  background: var(--upload-bg);
  cursor: pointer;
  user-select: none;
}

.attachment-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.attachment-card {
  min-width: 0;
  display: flex;
  align-items: center;
  border: 1px solid #cfd4db;
  background: #f7f8f9;
  border-radius: 8px;
  padding: 8px 10px;
}

.file-badge {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: #1d82f2;
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-right: 8px;
}

.file-content {
  min-width: 0;
}

.file-name {
  font-size: var(--fs-body);
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  font-size: var(--fs-meta);
  line-height: 1.3;
  color: var(--muted);
}

.icon-form {
  margin-left: auto;
}

.icon-btn {
  border: 0;
  background: transparent;
  font-size: 14px;
  cursor: pointer;
  color: #888c92;
}

.divider {
  margin-top: 14px;
  border-top: 1px solid var(--line);
}

.generate-bar {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: flex-end;
}

.generate-status {
  font-size: var(--fs-label);
  color: #5a6778;
  min-height: 20px;
}

.generate-btn {
  border: 0;
  background: var(--btn-primary);
  color: #fff;
  font-size: var(--fs-button);
  line-height: 1.2;
  font-weight: 600;
  border-radius: 8px;
  padding: 11px 22px;
  cursor: pointer;
}

.generate-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.generate-btn:hover {
  background: var(--btn-primary-hover);
}

.generated-list {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.generated-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.doc-card {
  min-width: 0;
  width: fit-content;
  max-width: min(560px, calc(100% - 140px));
  display: inline-flex;
  align-items: center;
  border: 1px solid #cfd4db;
  border-radius: 8px;
  padding: 8px 10px;
  text-decoration: none;
  color: inherit;
}

.doc-title {
  font-size: var(--fs-body);
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 420px;
}

.download-icon {
  margin-left: auto;
  color: #7e838a;
  font-size: 16px;
}

.doc-time {
  flex: 0 0 auto;
  font-size: var(--fs-label);
  line-height: 1.3;
  color: #656a71;
}

.doc-delete-form {
  flex: 0 0 auto;
}

.empty {
  margin: 0;
  font-size: var(--fs-label);
  color: #8c9198;
}