feat: 西班牙语日记学习工具与知识库

style.css

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+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+
+:root {
+  --bg: #f8f9fa;
+  --panel-bg: #ffffff;
+  --border: #dee2e6;
+  --text: #212529;
+  --text-muted: #6c757d;
+  --accent: #0d6efd;
+  --accent-hover: #0b5ed7;
+  --danger: #dc3545;
+  --success: #198754;
+  --highlight: #fff3cd;
+  --shadow: 0 1px 3px rgba(0,0,0,0.08);
+  --radius: 8px;
+  --font-mono: 'Consolas', 'Courier New', monospace;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --bg: #1a1d23;
+    --panel-bg: #212529;
+    --border: #373b3e;
+    --text: #e9ecef;
+    --text-muted: #9ca3af;
+    --accent: #3b82f6;
+    --accent-hover: #60a5fa;
+    --danger: #ef4444;
+    --success: #22c55e;
+    --highlight: #3d3520;
+  }
+}
+
+html, body { height: 100%; }
+body {
+  font-family: system-ui, -apple-system, sans-serif;
+  background: var(--bg);
+  color: var(--text);
+  display: flex;
+  justify-content: center;
+  align-items: stretch;
+  padding: 1rem;
+}
+
+#app {
+  display: grid;
+  grid-template-columns: 240px 1fr 280px;
+  gap: 1rem;
+  width: 100%;
+  max-width: 1200px;
+  min-height: 0;
+}
+
+#app > * {
+  background: var(--panel-bg);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  box-shadow: var(--shadow);
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.panel-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 0.75rem 1rem;
+  border-bottom: 1px solid var(--border);
+  gap: 0.5rem;
+}
+
+.panel-header h2 { font-size: 0.95rem; font-weight: 600; }
+
+/* Left panel — entry list */
+#panel-list { overflow-y: auto; }
+#entry-list {
+  list-style: none;
+  flex: 1;
+  overflow-y: auto;
+}
+#entry-list li {
+  padding: 0.75rem 1rem;
+  cursor: pointer;
+  border-bottom: 1px solid var(--border);
+  transition: background 0.1s;
+}
+#entry-list li:hover { background: var(--highlight); }
+#entry-list li.active { background: var(--highlight); border-left: 3px solid var(--accent); }
+#entry-list .entry-date { font-size: 0.75rem; color: var(--text-muted); }
+#entry-list .entry-preview { font-size: 0.85rem; margin-top: 0.15rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.entry-actions { display: none; gap: 0.3rem; margin-top: 0.3rem; }
+#entry-list li:hover .entry-actions { display: flex; }
+.entry-actions button {
+  background: none; border: 1px solid var(--border); border-radius: 4px;
+  padding: 0.15rem 0.4rem; font-size: 0.7rem; cursor: pointer; color: var(--text-muted);
+}
+.entry-actions .btn-delete { color: var(--danger); border-color: var(--danger); }
+
+#btn-new {
+  background: var(--accent); color: #fff; border: none;
+  width: 28px; height: 28px; border-radius: 6px;
+  font-size: 1.2rem; cursor: pointer; line-height: 1;
+}
+#btn-new:hover { background: var(--accent-hover); }
+
+/* Grammar quick access */
+#grammar-quick {
+  border-top: 1px solid var(--border);
+  flex-shrink: 0;
+}
+.grammar-header {
+  padding: 0.5rem 1rem;
+  border-bottom: 1px solid var(--border);
+}
+.more-link {
+  font-size: 0.75rem;
+  color: var(--accent);
+  text-decoration: none;
+  white-space: nowrap;
+}
+.more-link:hover { text-decoration: underline; }
+#grammar-list {
+  list-style: none;
+  padding: 0.25rem 0;
+  max-height: 220px;
+  overflow-y: auto;
+}
+#grammar-list li {
+  padding: 0.35rem 1rem;
+  font-size: 0.8rem;
+}
+#grammar-list a {
+  color: var(--text);
+  text-decoration: none;
+  display: block;
+}
+#grammar-list a:hover { color: var(--accent); }
+
+/* Center panel — editor */
+#panel-editor { display: flex; flex-direction: column; }
+#entry-date {
+  border: 1px solid var(--border); border-radius: 4px;
+  padding: 0.3rem 0.5rem; font-size: 0.85rem;
+  background: var(--panel-bg); color: var(--text);
+}
+#btn-save {
+  background: var(--accent); color: #fff; border: none;
+  padding: 0.35rem 0.75rem; border-radius: 6px;
+  font-size: 0.85rem; cursor: pointer; white-space: nowrap;
+}
+#btn-save:hover { background: var(--accent-hover); }
+#entry-text {
+  flex: 1; resize: none; border: none; padding: 1rem;
+  font-size: 1.05rem; line-height: 1.7;
+  font-family: var(--font-mono);
+  background: transparent; color: var(--text);
+  outline: none;
+}
+#entry-hint { padding: 0.5rem 1rem; font-size: 0.75rem; color: var(--text-muted); border-top: 1px solid var(--border); }
+
+/* Editor panel - live translation section */
+#editor-translate { border-top: 1px solid var(--border); padding: 0.5rem 1rem; }
+.editor-section-title { font-size: 0.75rem; font-weight: 600; color: var(--text-muted); margin-bottom: 0.4rem; }
+.editor-translate-line { display: flex; gap: 0.4rem; margin-bottom: 0.25rem; font-size: 0.85rem; line-height: 1.5; }
+.et-label { font-weight: 600; color: var(--text-muted); white-space: nowrap; min-width: 2.5rem; }
+.et-text { color: var(--text); flex: 1; }
+#selection-translate { margin-top: 0.3rem; padding: 0.3rem 0.5rem; background: var(--highlight); border-radius: 4px; }
+
+/* Editor panel - vocabulary section */
+#editor-vocab { border-top: 1px solid var(--border); padding: 0.5rem 1rem; max-height: 180px; overflow-y: auto; }
+.vocab-item { display: flex; align-items: center; gap: 0.4rem; padding: 0.25rem 0; font-size: 0.85rem; border-bottom: 1px solid var(--border); }
+.vocab-item:last-child { border-bottom: none; }
+.vocab-word { font-weight: 600; font-family: var(--font-mono); color: var(--accent); min-width: 6rem; }
+.vocab-en { color: var(--text-muted); flex: 1; }
+.vocab-zh { color: var(--text); min-width: 3rem; }
+.vocab-speech { background: none; border: 1px solid var(--border); border-radius: 4px; padding: 0.15rem 0.4rem; font-size: 0.7rem; cursor: pointer; color: var(--text-muted); line-height: 1; }
+.vocab-speech:hover { border-color: var(--accent); color: var(--accent); }
+
+/* Right panel — translation */
+#panel-translate { overflow-y: auto; }
+.translate-section {
+  padding: 1rem;
+  border-bottom: 1px solid var(--border);
+}
+.translate-label { font-size: 0.8rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-muted); }
+.translate-text {
+  font-size: 0.95rem; line-height: 1.6;
+  min-height: 3rem; padding: 0.5rem;
+  background: var(--bg); border-radius: 4px;
+}
+.btn-speech {
+  background: none; border: 1px solid var(--border); border-radius: 4px;
+  padding: 0.25rem 0.6rem; font-size: 0.75rem; cursor: pointer;
+  margin-top: 0.5rem; color: var(--text-muted);
+}
+.btn-speech:hover { border-color: var(--accent); color: var(--accent); }
+
+/* Modal overlay for delete confirmation */
+#modal-overlay {
+  display: none;
+  position: fixed; inset: 0;
+  background: rgba(0,0,0,0.4);
+  align-items: center; justify-content: center;
+  z-index: 100;
+}
+#modal-overlay.show { display: flex; }
+#modal-box {
+  background: var(--panel-bg); border-radius: var(--radius);
+  padding: 1.5rem; max-width: 360px; width: 90%;
+  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
+}
+#modal-box p { margin-bottom: 1rem; font-size: 0.9rem; }
+#modal-box .modal-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }
+#modal-box button {
+  padding: 0.4rem 1rem; border-radius: 6px; border: 1px solid var(--border);
+  cursor: pointer; font-size: 0.85rem;
+}
+#modal-box .btn-cancel { background: var(--panel-bg); color: var(--text); }
+#modal-box .btn-confirm { background: var(--danger); color: #fff; border-color: var(--danger); }
+
+@media (max-width: 768px) {
+  body { padding: 0.5rem; }
+  #app { grid-template-columns: 1fr; }
+  #panel-list { max-height: 30vh; }
+  #panel-editor { min-height: 40vh; }
+  #panel-translate { max-height: 30vh; }
+}