.profile-dropdown{position:absolute;top:calc(100% + 10px);right:0;background:#fff;border-radius:12px;box-shadow:0 8px 24px #00000026;width:240px;z-index:1000;overflow:hidden}.profile-header{padding:16px;background:linear-gradient(135deg,#f60,#00a8ff);color:#fff}.profile-fullname{font-size:16px;font-weight:700;margin-bottom:6px}.profile-name{font-size:13px;opacity:.95}.dropdown-divider{height:1px;background:#e0e0e0}.dropdown-menu{padding:0}.dropdown-item{width:100%;display:flex;align-items:center;gap:12px;padding:12px 16px;background:transparent;border:none;cursor:pointer;font-size:14px;font-weight:500;color:#333;transition:all .2s;text-align:left}.dropdown-item:hover{background:linear-gradient(135deg,#00a8ff1a,#00a8ff0d);color:#00a8ff;padding-left:20px}.dropdown-item.logout:hover{background:#fee;color:#c33}.item-icon{font-size:18px;display:inline-flex;align-items:center;justify-content:center}.item-icon 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#e0e0e0;border-radius:6px;font-size:14px;font-family:monospace;color:#00a8ff}.share-link-input input:focus{outline:none;border-color:#00a8ff}.share-link-input button{padding:10px 20px;background:#00a8ff;color:#fff;border:none;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden;min-width:85px}.share-link-input button:hover{background:#0090dd;transform:translateY(-1px);box-shadow:0 4px 8px #00a8ff4d}.share-link-input button.copied{background:#4caf50;animation:copySuccess .5s ease;cursor:default}.share-link-input button:disabled{cursor:default}@keyframes copySuccess{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}.share-dialog-actions{display:flex;justify-content:flex-end}.share-dialog-actions button{padding:10px 24px;background:#f0f0f0;color:#666;border:none;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s}.share-dialog-actions button:hover{background:#e0e0e0}/**
 * Copyright (c) 2014 The xterm.js authors. All rights reserved.
 * Copyright (c) 2012-2013, Christopher Jeffrey (MIT License)
 * https://github.com/chjj/term.js
 * @license MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * Originally forked from (with the author's permission):
 *   Fabrice Bellard's javascript vt100 for jslinux:
 *   http://bellard.org/jslinux/
 *   Copyright (c) 2011 Fabrice Bellard
 *   The original design remains. The terminal itself
 *   has been extended to include xterm CSI codes, among
 *   other features.
 */.xterm{cursor:text;position:relative;user-select:none;-ms-user-select:none;-webkit-user-select:none}.xterm.focus,.xterm:focus{outline:none}.xterm .xterm-helpers{position:absolute;top:0;z-index:5}.xterm .xterm-helper-textarea{padding:0;border:0;margin:0;position:absolute;opacity:0;left:-9999em;top:0;width:0;height:0;z-index:-5;white-space:nowrap;overflow:hidden;resize:none}.xterm .composition-view{background:#000;color:#fff;display:none;position:absolute;white-space:nowrap;z-index:1}.xterm .composition-view.active{display:block}.xterm .xterm-viewport{background-color:#000;overflow-y:scroll;cursor:default;position:absolute;right:0;left:0;top:0;bottom:0}.xterm .xterm-screen{position:relative}.xterm .xterm-screen canvas{position:absolute;left:0;top:0}.xterm 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var(--color-border)}.instruction-panel-header{padding:var(--spacing-md);border-bottom:1px solid var(--color-border)}.instruction-panel-title{font-size:14px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-secondary)}.instruction-panel-content{flex:1;overflow-y:auto;padding:var(--spacing-md)}.instruction-empty{text-align:center;padding:var(--spacing-xl);color:var(--color-text-secondary)}.instruction-section{margin-bottom:var(--spacing-lg)}.instruction-task-title{font-size:20px;font-weight:700;margin-bottom:var(--spacing-sm);color:var(--color-text)}.instruction-description{font-size:15px;line-height:1.6;color:var(--color-text)}.instruction-subtitle{font-size:14px;font-weight:600;margin-bottom:var(--spacing-sm);color:var(--color-text-secondary)}.instruction-example{margin-top:var(--spacing-sm);padding:var(--spacing-md);background:var(--color-bg);border-radius:var(--border-radius);border:1px solid var(--color-border)}.instruction-example pre{margin-top:var(--spacing-xs);padding:var(--spacing-sm);background:var(--color-bg-tertiary);border-radius:var(--border-radius-sm);overflow-x:auto}.instruction-example code{font-family:var(--font-mono);font-size:13px}.instruction-requirements{list-style:none;padding:0}.requirement{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm);margin-bottom:var(--spacing-xs);background:var(--color-bg);border-radius:var(--border-radius-sm);border:1px solid var(--color-border)}.requirement.requirement-passed{border-color:var(--color-success);background:#10b9811a}.requirement.requirement-failed{border-color:var(--color-error);background:#ef44441a}.requirement-icon{font-size:16px;font-weight:700}.requirement-passed .requirement-icon{color:var(--color-success)}.requirement-failed .requirement-icon{color:var(--color-error)}.requirement-pending .requirement-icon{color:var(--color-text-light)}.instruction-feedback{padding:var(--spacing-md);border-radius:var(--border-radius);font-weight:500;text-align:center}.instruction-feedback.success{background:#10b9811a;color:var(--color-success);border:1px solid var(--color-success)}.instruction-feedback.partial{background:#f59e0b1a;color:var(--color-warning);border:1px solid var(--color-warning)}.instruction-hints{display:flex;flex-direction:column;gap:var(--spacing-sm)}.instruction-hint{padding:var(--spacing-md);background:var(--color-bg);border-radius:var(--border-radius);border:1px solid var(--color-border)}.hint-reveal-button{width:100%;padding:var(--spacing-sm);background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-secondary) 100%);color:#fff;border:none;border-radius:var(--border-radius-sm);cursor:pointer;font-size:14px;font-weight:500;transition:all .2s}.hint-reveal-button:hover{transform:translateY(-1px);box-shadow:0 4px 12px #0066ff4d}.hint-revealed{font-size:14px;line-height:1.6}.resize-handle{position:relative;background:transparent}.panel-toggle{position:absolute;top:50%;transform:translateY(-50%);width:32px;height:80px;background:var(--color-bg-tertiary);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:100;font-size:16px;transition:all .2s;box-shadow:2px 0 4px #0000001a}.panel-toggle:hover{background:var(--color-primary);color:#fff;box-shadow:2px 0 8px #00000026}.panel-toggle-left{left:0;border-left:none;border-radius:0 8px 8px 0}.panel-toggle-right{right:0;border-right:none;border-radius:var(--border-radius-sm) 0 0 var(--border-radius-sm)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#0003;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#0000004d}.console-content::-webkit-scrollbar-thumb{background:#fff3}.console-content::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.turtle-canvas-container{height:100%;display:flex;flex-direction:column;background:var(--color-bg)}.turtle-canvas-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md);border-bottom:1px solid var(--color-border);background:var(--color-bg-secondary)}.turtle-canvas-title{font-size:14px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-secondary)}.turtle-clear-button{padding:var(--spacing-xs) var(--spacing-sm);background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--border-radius-sm);font-size:12px;cursor:pointer;transition:all .2s}.turtle-clear-button:hover{background:var(--color-bg-tertiary);color:var(--color-text)}.turtle-canvas-wrapper{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--spacing-md);overflow:auto;background:var(--color-bg-tertiary)}.turtle-canvas{border:2px solid var(--color-border);border-radius:var(--border-radius);background:#fff;box-shadow:0 4px 6px #0000001a;max-width:100%;height:auto;display:block}@media (max-width: 1024px){.header-button .button-text{display:none}}@media (max-width: 768px){.ide-main{flex-direction:column}.panel-toggle{display:none}.header-right .header-button:not(.help-button){display:none}}.backend-error{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:#fee2e2;border-bottom:2px solid #ef4444;color:#991b1b;font-size:13px}.error-icon{font-size:18px}.error-message{flex:1;font-weight:500}.connection-status{position:fixed;bottom:20px;right:20px;display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:#000c;color:#fff;border-radius:var(--border-radius);font-size:13px;box-shadow:0 4px 12px #0000004d;z-index:1000}.loading-spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.shared-loading{display:flex;align-items:center;justify-content:center;min-height:100vh;font-size:18px;color:#999}.shared-error{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:20px}.shared-error p{color:#c33;font-size:18px}.shared-error button{padding:10px 20px;background:#00a8ff;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600;box-shadow:0 2px 4px #00a8ff33}.shared-error button:hover{background:#0090dd;transform:translateY(-1px);box-shadow:0 4px 8px #00a8ff4d}.shared-banner{background:linear-gradient(135deg,#f60,#00a8ff);color:#fff;padding:14px 24px;box-shadow:0 2px 8px #0000001a}.banner-content{display:flex;justify-content:space-between;align-items:center;max-width:1400px;margin:0 auto}.banner-content span{display:inline-flex;align-items:center}.banner-content span svg{margin-right:8px;flex-shrink:0}.fork-banner-button{padding:10px 20px;background:#fff;color:#f60;border:none;border-radius:8px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s;box-shadow:0 2px 8px #fff3;display:inline-flex;align-items:center;gap:8px}.fork-banner-button svg{width:18px;height:18px;flex-shrink:0}.fork-banner-button:hover{transform:translateY(-2px);box-shadow:0 4px 16px #fff6;background:#fffaf5}.fork-dialog-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:10000}.fork-dialog{background:#fff;border-radius:16px;padding:32px;width:90%;max-width:450px;box-shadow:0 12px 40px #0000004d;border:2px solid #00A8FF}.fork-dialog h3{margin:0 0 12px;font-size:22px;font-weight:700;color:#333;background:linear-gradient(135deg,#f60,#00a8ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.fork-dialog p{margin:0 0 24px;color:#666;font-size:14px;line-height:1.6}.fork-dialog input{width:100%;padding:14px 16px;border:2px solid #e5e7eb;border-radius:8px;font-size:15px;margin-bottom:20px;box-sizing:border-box;transition:all .2s}.fork-dialog input:focus{outline:none;border-color:#00a8ff;box-shadow:0 0 0 3px #00a8ff1a}.fork-dialog-actions{display:flex;gap:12px}.fork-dialog-actions button{flex:1;padding:14px;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s}.fork-dialog-actions button:first-child{background:#f60;color:#fff;box-shadow:0 2px 4px #f603}.fork-dialog-actions button:first-child:hover:not(:disabled){background:#f50;transform:translateY(-1px);box-shadow:0 4px 12px #f606}.fork-dialog-actions button:first-child:disabled{opacity:.6;cursor:not-allowed}.fork-dialog-actions button.cancel{background:#9ca3af;color:#fff;box-shadow:0 2px 4px #9ca3af33}.fork-dialog-actions button.cancel:hover{background:#6b7280;transform:translateY(-1px)}.fork-hint{margin:16px 0 0;padding:14px 16px;background:linear-gradient(135deg,#ff66001a,#00a8ff1a);border:1px solid #00A8FF;border-radius:8px;font-size:13px;color:#666;line-height:1.5}