/* 实用工具频道 — 与主站 layout 配合 */
.tools-channel-layout {
  display: block;
  max-width: 1440px;
  padding-left: 16px;
  padding-right: 16px;
}

.tools-channel-layout .tools-main {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 24px 0 32px;
}

.tools-hub-intro {
  margin-bottom: 24px;
  padding: 20px 22px;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  line-height: 1.75;
  color: var(--text);
  font-size: 0.95rem;
}

.tools-hub-intro a {
  font-weight: 600;
}

.tools-alert {
  padding: 14px 18px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.tools-alert-warn {
  background: #fff8e6;
  border: 1px solid #f0c674;
  color: #6b5900;
}

.tools-alert-warn a {
  font-weight: 600;
}

.tools-hub-grid-all {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

@media (max-width: 1200px) {
  .tools-hub-grid-all {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 992px) {
  .tools-hub-grid-all {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* H5 / 手机：一排两个 */
@media (max-width: 768px) {
  .tools-hub-grid-all {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .tools-hub-card {
    padding: 16px 10px;
  }

  .tools-hub-name {
    font-size: 0.88rem;
  }

  .tools-hub-desc {
    font-size: 0.7rem;
    line-height: 1.35;
  }

  .tools-channel-layout {
    padding-left: 12px;
    padding-right: 12px;
  }

  .tools-hub-intro {
    padding: 16px;
    font-size: 0.9rem;
  }
}

.tools-hub-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 12px;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--text);
  transition: transform 0.2s, box-shadow 0.2s;
}

.tools-hub-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  color: var(--primary-dark);
}

.tools-hub-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.tools-hub-name {
  font-weight: 700;
  font-size: 0.95rem;
}

.tools-hub-desc {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 4px;
}

/* 工具页：左操作区 + 右侧说明 */
.tools-page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
  gap: 24px;
  align-items: start;
}

.tools-page-main {
  min-width: 0;
}

.tools-page-aside {
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.tools-page-aside .tools-page-head {
  margin-bottom: 0;
  padding: 26px 24px;
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.tools-page-head h1 {
  font-size: 1.65rem;
  margin-bottom: 12px;
  line-height: 1.3;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tools-page-desc {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text);
  margin: 0;
}

.tools-privacy {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 14px;
  line-height: 1.6;
}

.tools-privacy i {
  color: var(--primary);
  margin-right: 4px;
}

.tools-form {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  max-width: none;
}

@media (max-width: 960px) {
  .tools-page-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .tools-page-aside {
    position: static;
    order: -1;
  }
  .tools-page-aside .tools-page-head {
    padding: 18px 20px;
  }
  .tools-page-head h1 {
    font-size: 1.35rem;
  }
}

.tools-upload-zone {
  border: 2px dashed var(--primary-light);
  border-radius: var(--radius);
  padding: 32px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  margin-bottom: 20px;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tools-upload-zone.dragover {
  border-color: var(--primary);
  background: rgba(108, 92, 231, 0.06);
}

.tools-upload-inner i {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.tools-upload-inner span {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 6px;
}

.tools-preview img {
  max-width: 100%;
  max-height: 280px;
  border-radius: 8px;
}

.tools-preview-clear {
  margin-top: 10px;
  border: none;
  background: var(--bg-deep);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
}

.tools-options {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.tools-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
}

.tools-field input,
.tools-field select,
.tools-field textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
}

.tools-field textarea {
  resize: vertical;
  min-height: 72px;
}

.tools-check {
  flex-direction: row;
  align-items: center;
  margin-top: 28px;
}

.tools-actions {
  text-align: center;
}

.tools-btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
  padding: 12px 36px;
  font-size: 1rem;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
}

.tools-btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.tools-btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 600;
}

.tools-status {
  text-align: center;
  margin-top: 16px;
  color: var(--muted);
}

.tools-status.error {
  color: #d63031;
}

.tools-status.success {
  color: #00b894;
}

.tools-result {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--border);
}

.tools-result-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 12px;
}

.tools-result-label i {
  margin-right: 6px;
}

.tools-result-preview-frame {
  background: var(--bg-deep);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 16px;
  text-align: center;
  max-height: 420px;
  overflow: auto;
}

.tools-result-preview-frame img {
  max-width: 100%;
  max-height: 380px;
  width: auto;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.tools-result-direct {
  text-align: center;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 14px;
}

.tools-result-actions {
  text-align: center;
}

.hidden {
  display: none !important;
}

.tools-multi-preview {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: 10px;
  width: 100%;
  padding: 8px;
}

.tools-multi-item {
  position: relative;
  background: var(--bg-deep);
  border-radius: 8px;
  overflow: hidden;
}

.tools-multi-item img {
  width: 100%;
  height: 72px;
  object-fit: cover;
  display: block;
}

.tools-multi-item button {
  width: 100%;
  border: none;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 0.7rem;
  padding: 4px;
  cursor: pointer;
}

.tools-info-panel {
  margin-top: 16px;
  padding: 16px 20px;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.tools-info-dl {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 8px 16px;
  font-size: 0.95rem;
}

.tools-info-dl dt {
  color: var(--muted);
  font-weight: 600;
}

@media (max-width: 768px) {
  .tools-header .tools-top-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--card);
    flex-direction: column;
    padding: 12px;
    box-shadow: var(--shadow);
    z-index: 100;
  }
  .tools-header .tools-top-nav.open {
    display: flex;
  }
}