/* ===== UPLOAD SECTION ===== */
.upload-section {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 56px);
  padding: 2rem;
}

.drop-zone {
  border: 2px dashed var(--card-border);
  border-radius: var(--radius);
  padding: 3.5rem 2.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  max-width: 480px;
  width: 100%;
  background: var(--card);
}
.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-light);
}
.drop-zone svg { color: var(--text-secondary); margin-bottom: 1rem; }
.drop-zone h2 { font-size: 1.2rem; margin-bottom: 0.25rem; }
.drop-zone p { color: var(--text-secondary); font-size: 0.9rem; }
.supported-types {
  margin-top: 1rem;
  font-size: 0.78rem !important;
  opacity: 0.65;
}

/* ===== EDITOR SECTION ===== */
.editor-section {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 56px);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1.25rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--card-border);
  gap: 0.5rem;
  flex-wrap: wrap;
}
.toolbar-right { display: flex; gap: 0.5rem; }

.content-area {
  flex: 1;
  overflow: auto;
  padding: 1.25rem;
  background: var(--bg);
}

/* ===== CODE VIEW ===== */
.code-view {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  overflow-x: auto;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-wrap: break-word;
  tab-size: 2;
}
.code-view code { color: var(--text); }

/* ===== MARKDOWN PREVIEW ===== */
.markdown-preview {
  max-width: 780px;
  margin: 0 auto;
  line-height: 1.85;
  font-size: 0.95rem;
  color: var(--text);
}

/* Headings */
.markdown-preview h1 {
  font-size: 1.85rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--card-border);
  letter-spacing: -0.01em;
}
.markdown-preview h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 1.75rem 0 0.6rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--card-border);
}
.markdown-preview h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}
.markdown-preview h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.25rem 0 0.4rem;
}
.markdown-preview h1:first-child,
.markdown-preview h2:first-child,
.markdown-preview h3:first-child { margin-top: 0; }

/* Paragraphs */
.markdown-preview p {
  margin-bottom: 1rem;
}

/* Links */
.markdown-preview a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.markdown-preview a:hover { opacity: 0.8; }

/* Bold / Italic */
.markdown-preview strong { font-weight: 600; }
.markdown-preview em { font-style: italic; }

/* Inline code */
.markdown-preview code {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  padding: 0.15rem 0.4rem;
  border-radius: 5px;
  font-size: 0.82em;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  color: var(--accent);
}

/* Code blocks */
.markdown-preview pre {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  padding: 1.1rem 1.25rem;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}
.markdown-preview pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.82rem;
  color: var(--text);
}

/* Blockquotes */
.markdown-preview blockquote {
  border-left: 4px solid var(--accent);
  padding: 0.6rem 1rem;
  margin: 0 0 1.25rem 0;
  background: var(--accent-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}
.markdown-preview blockquote p:last-child { margin-bottom: 0; }

/* Lists */
.markdown-preview ul,
.markdown-preview ol {
  padding-left: 1.6rem;
  margin-bottom: 1.25rem;
}
.markdown-preview li {
  margin-bottom: 0.3rem;
}
.markdown-preview li > ul,
.markdown-preview li > ol {
  margin-top: 0.3rem;
  margin-bottom: 0;
}

/* Task lists (checkboxes) */
.markdown-preview input[type="checkbox"] {
  margin-right: 0.4rem;
  accent-color: var(--accent);
}

/* Horizontal rule */
.markdown-preview hr {
  border: none;
  border-top: 2px solid var(--card-border);
  margin: 2rem 0;
}

/* Images */
.markdown-preview img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin: 0.5rem 0 1rem;
  box-shadow: var(--shadow);
}

/* Tables */
.markdown-preview table {
  border-collapse: collapse;
  width: 100%;
  margin-bottom: 1.25rem;
  font-size: 0.88rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.markdown-preview thead { background: var(--bg-secondary); }
.markdown-preview th {
  font-weight: 600;
  text-align: left;
  padding: 0.6rem 0.85rem;
  border-bottom: 2px solid var(--card-border);
}
.markdown-preview td {
  padding: 0.5rem 0.85rem;
  border-bottom: 1px solid var(--card-border);
}
.markdown-preview tr:last-child td { border-bottom: none; }
.markdown-preview tbody tr:hover { background: var(--accent-light); }

/* Definition lists / details */
.markdown-preview details {
  margin-bottom: 1rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
}
.markdown-preview summary {
  font-weight: 600;
  cursor: pointer;
}

/* Keyboard / kbd */
.markdown-preview kbd {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  font-size: 0.8em;
  font-family: 'Consolas', 'Monaco', monospace;
  box-shadow: 0 1px 0 var(--card-border);
}

/* ===== TABLE VIEW ===== */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.data-table th,
.data-table td {
  border: 1px solid var(--card-border);
  padding: 0.45rem 0.7rem;
  text-align: left;
  min-width: 70px;
}
.data-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}
.data-table tr:hover td { background: var(--accent-light); }
.data-table td.editable,
.data-table th.editable {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  cursor: text;
}

/* ===== EDIT TEXTAREA ===== */
.edit-textarea {
  width: 100%;
  height: 100%;
  min-height: 400px;
  border: none;
  background: var(--bg-secondary);
  color: var(--text);
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  padding: 1.25rem;
  resize: none;
  border-radius: var(--radius-sm);
  tab-size: 2;
}
.edit-textarea:focus { outline: 2px solid var(--accent); outline-offset: -2px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .upload-section { padding: 1.25rem; min-height: calc(100vh - 56px); }
  .drop-zone { padding: 2.5rem 1.25rem; }
  .drop-zone svg { width: 36px; height: 36px; }
  .drop-zone h2 { font-size: 1.05rem; }
  .toolbar { padding: 0.5rem 0.75rem; }
  .toolbar-right { flex-wrap: wrap; }
  .content-area { padding: 0.75rem; }
  .code-view { font-size: 0.8rem; padding: 0.85rem; line-height: 1.6; }
  .edit-textarea { min-height: 250px; font-size: 0.8rem; padding: 0.85rem; }
  .data-table th, .data-table td { padding: 0.35rem 0.5rem; font-size: 0.8rem; min-width: 55px; }
  .markdown-preview { font-size: 0.9rem; line-height: 1.7; }
  .markdown-preview h1 { font-size: 1.45rem; }
  .markdown-preview h2 { font-size: 1.2rem; }
  .markdown-preview pre { padding: 0.75rem; }
  .markdown-preview th, .markdown-preview td { padding: 0.4rem 0.6rem; font-size: 0.82rem; }
}