/* ========================================
   HTML 实体转义工具样式
   ======================================== */

/* 主内容 */
.main-content { 
    width: 100%; 
    max-width: 1200px;
    height: calc(100vh - 120px); 
    display: flex; 
    align-items: center; 
    padding: 0 20px; 
    padding-bottom: 50px; 
    z-index: 10; 
}
.container { width: 100%; height: 100%; }
.tool-card { 
    background: var(--bg-card); 
    border: 1px solid var(--border-color); 
    border-radius: var(--radius-xl); 
    overflow: hidden; 
    display: flex; 
    flex-direction: column; 
    width: 100%;
    height: 100%;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* 工具栏 */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: rgba(0,0,0,0.2);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 10px;
    flex-shrink: 0;
}
.mode-group { display: flex; gap: 8px; }
.mode-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: 0.2s;
}
.mode-btn:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.mode-btn.active { background: rgba(255,255,255,0.1); color: var(--primary-color); border-color: var(--primary-color); }

.actions-group { display: flex; gap: 8px; }
.btn-action { 
    padding: 8px 16px; border-radius: var(--radius-md); border: 1px solid var(--border-color);
    background: rgba(255,255,255,0.05); color: var(--text-secondary); cursor: pointer;
    font-size: 13px; display: flex; align-items: center; gap: 6px; transition: 0.2s;
}
.btn-action:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
.btn-action.btn-blue { background: rgba(234, 179, 8, 0.2); border-color: rgba(234, 179, 8, 0.3); color: #facc15; }
.btn-action.btn-blue:hover { background: rgba(234, 179, 8, 0.3); }

/* 编辑区 */
.editor-area {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}
.panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.input-panel { border-right: 1px solid var(--border-color); }

.panel-header {
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}
.char-count { font-size: 10px; color: var(--text-muted); }
.btn-icon { background: transparent; border: none; color: var(--text-muted); cursor: pointer; padding: 2px; transition: 0.2s; }
.btn-icon:hover { color: var(--text-primary); }

textarea {
    flex: 1;
    padding: 16px;
    background: transparent;
    border: none;
    outline: none;
    resize: none;
    font-family: var(--font-mono, 'Consolas', 'Monaco', monospace);
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    overflow: auto;
}
textarea::placeholder { color: var(--text-muted); }

/* 响应式 */
@media (max-width: 768px) {
    .editor-area { flex-direction: column; }
    .input-panel { border-right: none; border-bottom: 1px solid var(--border-color); height: 40%; }
    .toolbar { flex-direction: column; align-items: stretch; }
}