.hero {
  max-width: 560px;
  text-align: center;
}

.hero h1 {
  margin: 0 0 14px;
  font-family: "Calistoga", serif;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero .tagline {
  margin: 0;
  color: var(--muted-fg);
  line-height: 1.7;
}

.tools {
  /* 让工具区在桌面端占据更强主体位置 */
  width: min(100%, 980px);
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(420px, 1.25fr);
  gap: 24px;
}

.tool-card {
  padding: 22px 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 300px;
}

.tool-card.featured {
  position: relative;
  border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  padding: 2px;
}

.tool-card.featured .card-inner {
  border-radius: calc(var(--radius) - 1px);
  background: var(--card);
  height: 100%;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #ffffff;
}

.card-title {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card-desc {
  margin: 0;
  color: var(--muted-fg);
  line-height: 1.65;
  flex: 1;
}

.form-stack {
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-size: 0.84rem;
  color: var(--muted-fg);
  font-weight: 600;
}

.field input[type="text"],
.field select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
  color: var(--fg);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.86rem;
}

.upload-zone {
  border: 1px dashed var(--border);
  border-radius: 12px;
  background: var(--muted);
  text-align: center;
  padding: 24px 16px;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.upload-zone p {
  margin: 0 0 4px;
  color: var(--fg);
}

.upload-zone small {
  color: var(--muted-fg);
}

#fileInput {
  display: none;
}

.current-file {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  border-radius: 10px;
  padding: 10px 12px;
  word-break: break-all;
}

.toggle-grid {
  display: grid;
  gap: 10px;
}

.toggle-row {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
}

.toggle-row span {
  font-size: 0.9rem;
}

.toggle {
  position: relative;
  display: inline-flex;
  width: 44px;
  height: 24px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: #fff;
  transition: all 0.2s ease;
}

.toggle-slider::before {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--muted-fg);
  left: 2px;
  top: 2px;
  transition: transform 0.2s ease;
}

.toggle input:checked + .toggle-slider {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: #fff;
}

.actions {
  width: min(100%, 680px);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.btn {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--fg);
  padding: 12px 18px;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary {
  border: none;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.btn-success {
  border: none;
  color: #fff;
  background: linear-gradient(135deg, #1a9d66, #1f8b74);
}

.btn-link {
  border-color: var(--accent-border);
  color: var(--accent);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.status-bar {
  width: min(100%, 680px);
  display: none;
  align-items: center;
  gap: 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  padding: 12px 14px;
  box-shadow: var(--shadow-sm);
}

.status-bar.show {
  display: flex;
}

.status-bar.success {
  color: var(--ok);
  border-color: rgba(26, 157, 102, 0.35);
  background: var(--ok-soft);
}

.status-bar.error {
  color: var(--danger);
  border-color: rgba(201, 63, 63, 0.35);
  background: var(--danger-soft);
}

.status-bar.loading {
  color: var(--warn);
  border-color: rgba(200, 134, 26, 0.35);
  background: var(--warn-soft);
}

.status-text {
  line-height: 1.5;
}

.spinner {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(200, 134, 26, 0.25);
  border-top-color: var(--warn);
  animation: spin 1s linear infinite;
}

.link-arrow {
  transition: transform 0.2s ease;
}

.btn-link:hover .link-arrow {
  transform: translateX(3px);
}

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

@media (max-width: 520px) {
  .page {
    gap: 30px;
    padding: 36px 16px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .tools {
    grid-template-columns: 1fr;
  }

  .actions {
    flex-direction: column;
  }

  .btn,
  .btn-link {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 920px) {
  .tools {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}