:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f5f7fb;
  color: #1b2230;
}

.page {
  max-width: 1500px;
  margin: 0 auto;
  padding: 16px;
}

.hero h1 {
  margin: 0 0 6px;
}

.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.locale-selector {
  min-width: 120px;
}

.hero p {
  margin: 0 0 14px;
}

.layout {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(420px, 520px) 1fr;
}

.panel {
  border: 1px solid #d7dce6;
  border-radius: 12px;
  background: #ffffff;
  padding: 14px;
}

.left-panel,
.builder,
.api-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  border: 1px solid #cfd6e3;
  border-radius: 8px;
  padding: 8px 10px;
}

textarea {
  resize: vertical;
}

.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}

.builder {
  border: 1px solid #e2e8f3;
  border-radius: 10px;
  padding: 10px;
}

.builder-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.api-card {
  border: 1px solid #e5eaf4;
  border-radius: 10px;
  padding: 10px;
}

.param-row {
  display: grid;
  grid-template-columns: 1fr 140px 90px;
  gap: 8px;
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.actions {
  margin-top: 4px;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  background: #0e5ae7;
  color: #fff;
  transition: transform 0.18s ease, filter 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button.secondary {
  background: #e8edfb;
  color: #25304a;
}

button.danger {
  background: #c53d4c;
  color: #fff;
}

.spec-input {
  width: 100%;
  min-height: 280px;
  margin-bottom: 12px;
}

.spec-input[readonly] {
  background: #f8faff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;
  font-size: 12px;
}

.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.tab {
  background: #e8edfb;
  color: #25304a;
  font-size: 12px;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tab.active {
  background: #0e5ae7;
  color: #fff;
}

.language-label,
.message,
.meta {
  margin: 0;
  font-size: 13px;
}

.code-input {
  width: 100%;
  min-height: 460px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;
  font-size: 13px;
}

.file-hint {
  max-width: 1500px;
  margin: 12px auto 0;
  border: 1px solid #f0c36d;
  background: #fff7e6;
  color: #7a4e00;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
}

.app-footer {
  margin-top: 14px;
  text-align: center;
  font-size: 13px;
}

.app-footer a {
  color: #0e5ae7;
  text-decoration: none;
}

.app-footer a:hover {
  text-decoration: underline;
}

.fade-in {
  animation: fadeIn 0.45s ease;
}

.slide-up {
  animation: slideUp 0.4s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .page {
    padding: 10px;
  }

  .hero-top {
    flex-direction: column;
    align-items: stretch;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .param-row {
    grid-template-columns: 1fr;
  }

  .inline-actions button,
  .builder-header button {
    width: 100%;
  }

  .builder-header {
    flex-direction: column;
    align-items: stretch;
  }

  .code-input,
  .spec-input {
    min-height: 320px;
  }
}