:root {
  --bg: #f6f8fb;
  --panel-bg: #ffffff;
  --text: #1f2937;
  --muted: #64748b;
  --border: #dbe3ef;
  --accent: #2563eb;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

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

.ide-layout {
  min-height: 100vh;
  width: 100%;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 320px;
  gap: 14px;
  padding: 14px;
}

.panel {
  min-height: 0;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
}

.panel-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.panel-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-header h1,
.panel-header h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 650;
}

.panel-editor {
  overflow: hidden;
}

.tabs-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.tabs-list {
  flex: 1;
  min-width: 0;
  display: flex;
  gap: 8px;
  overflow: auto;
}

.editor-textarea {
  width: 100%;
  height: 100%;
  min-height: 0;
  border: 0;
  resize: none;
  padding: 16px;
  background: transparent;
  color: inherit;
  font: 500 14px/1.55 "Consolas", "Courier New", monospace;
}

.editor-textarea:focus {
  outline: none;
}

.editor-textarea::placeholder {
  color: var(--muted);
}

.history-list {
  list-style: none;
  margin: 0;
  padding: 8px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@media (max-width: 1080px) {
  .ide-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) 220px;
  }

  .panel-sidebar {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .panel-editor {
    grid-column: 2;
    grid-row: 1;
  }

  .panel-history {
    grid-column: 2;
    grid-row: 2;
  }
}

@media (max-width: 820px) {
  .ide-layout {
    grid-template-columns: 1fr;
    grid-template-rows: 170px minmax(0, 1fr) 220px;
  }

  .panel-sidebar,
  .panel-editor,
  .panel-history {
    grid-column: 1;
  }
}



















.seo-faq-container {
  margin-top: 40px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.seo-box,
.faq-box {
  background: var(--panel-soft, #f8fafc);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.05);
  transition: 0.3s ease;
}

body.dark .seo-box,
body.dark .faq-box {
  background: #1e1e2a;
  border: 1px solid rgba(255,255,255,0.08);
  color: #e5e7eb;
}

.seo-box h2,
.faq-box h2 {
  margin-bottom: 12px;
  font-size: 18px;
  color: var(--text, #111827);
}

body.dark .seo-box h2,
body.dark .faq-box h2 {
  color: #ffffff;
}

.faq-item {
  margin-top: 12px;
  padding: 10px;
  border-left: 3px solid #3b82f6;
  background: rgba(59,130,246,0.06);
  border-radius: 10px;
}

body.dark .faq-item {
  background: rgba(59,130,246,0.08);
}

.faq-item h4 {
  margin: 0 0 6px 0;
  font-size: 15px;
}

.faq-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}