.layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:0}.sidebar-logo{padding:20px 20px 16px;border-bottom:1px solid var(--border)}.logo-text{font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--red);letter-spacing:4px;display:block}.logo-sub{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:2px}.sidebar-nav{flex:1;padding:12px 0}.nav-link{display:flex;align-items:center;gap:10px;padding:10px 20px;color:var(--text-secondary);font-size:13px;font-weight:500;text-decoration:none;transition:all .15s;border-left:3px solid transparent}.nav-link:hover{color:var(--text-primary);background:var(--bg-hover)}.nav-link.active{color:var(--red);border-left-color:var(--red);background:#c0392b0f}.nav-icon{font-size:8px;opacity:.5}.nav-link.active 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solid;border-radius:var(--radius-sm);letter-spacing:1px;color:var(--text-secondary)}.card-difficulty{font-size:11px;letter-spacing:1px;text-transform:uppercase}.card-title{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--text-primary)}.card-desc{font-size:13px;color:var(--text-secondary);line-height:1.5;margin-bottom:16px}.card-footer{display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--border)}.card-points{font-size:14px;font-weight:600;color:var(--amber)}.card-solved{font-size:12px;color:var(--green);display:flex;align-items:center;gap:4px}.flag-icon{font-size:14px}.card-status{font-size:11px;color:var(--text-muted);letter-spacing:1px}.no-results{grid-column:1 / -1;text-align:center;padding:40px;color:var(--text-muted)}.page-loading{padding:60px;text-align:center;color:var(--text-muted)}/**
 * 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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