html,body,#root{background-color:#f8fafc;width:100%;height:100%;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow-x:hidden}:root{--pseint-blue-dark:#1b365d;--pseint-blue-header:#244b7a;--pseint-blue-mid:#2c598d;--pseint-blue-light:#eaf2fb;--pseint-blue-hover:#3b6ea5;--pseint-border:#b8c7d9;--pseint-bg-gray:#f4f6f9;--pseint-editor-bg:#fff;--pseint-gutter-bg:#eef2f7;--pseint-gutter-text:#7b8a9b;--pseint-console-bg:#0f172a;--pseint-console-text:#f1f5f9;--pseint-console-prompt:#f59e0b;--pseint-console-success:#10b981;--pseint-console-error:#ef4444}*{box-sizing:border-box;margin:0;padding:0}html,body{background-color:var(--pseint-bg-gray);color:#1e293b;width:100%;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow-x:hidden}.pseint-app{flex-direction:column;width:100%;max-width:100%;height:100vh;display:flex;overflow:hidden}.pseint-navbar{background-color:var(--pseint-blue-dark);color:#fff;border-bottom:2px solid #0f2341;flex-direction:column;width:100%;display:flex;box-shadow:0 2px 4px #00000026}.pseint-title-bar{background-color:var(--pseint-blue-header);justify-content:space-between;align-items:center;width:100%;padding:6px 16px;display:flex}.pseint-brand{align-items:center;gap:10px;font-size:1.02rem;font-weight:700;display:flex}.pseint-icon-badge{color:#fff;letter-spacing:.5px;background-color:#3b82f6;border-radius:4px;padding:2px 6px;font-size:.8rem;font-weight:900}.pseint-menu-bar{background-color:var(--pseint-blue-dark);gap:2px;width:100%;padding:2px 8px;font-size:.85rem;display:flex}.pseint-menu-item{color:#dbeade;cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:3px;padding:4px 10px;transition:background .15s}.pseint-menu-item:hover{background-color:var(--pseint-blue-mid);color:#fff}.student-header-bar{color:#fff;background:linear-gradient(90deg,#1e3a8a 0%,#2563eb 100%);border-bottom:1px solid #1d4ed8;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;width:100%;padding:6px 16px;font-size:.88rem;display:flex}.student-selector-group{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.student-selector-group select{color:#1e293b;cursor:pointer;background-color:#fff;border:1px solid #93c5fd;border-radius:4px;outline:none;padding:4px 8px;font-size:.85rem;font-weight:600}.student-active-badge{background:#ffffff2e;border:1px solid #ffffff4d;border-radius:4px;padding:4px 12px;font-size:.82rem}.exam-banner-bar{border-bottom:1px solid var(--pseint-border);background-color:#f1f5f9;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:6px 12px;display:flex}.exam-tabs-group{align-items:center;gap:8px;display:flex}.exam-tab-btn{color:#475569;cursor:pointer;background-color:#e2e8f0;border:1px solid #cbd5e1;border-radius:6px 6px 0 0;align-items:center;gap:6px;padding:6px 14px;font-size:.83rem;font-weight:700;transition:all .15s;display:flex}.exam-tab-btn.active{color:#1d4ed8;background-color:#fff;border-color:#3b82f6 #3b82f6 #2563eb;border-bottom-style:solid;border-bottom-width:2px;box-shadow:0 -2px 4px #0000000a}.exam-problem-box{color:#1e3a8a;background-color:#eff6ff;border:1px solid #bfdbfe;border-radius:6px;margin:6px 12px 0;padding:8px 12px;font-size:.83rem}.pseint-workspace{flex:1;width:100%;display:flex;overflow:hidden}.pseint-sidebar{border-right:1px solid var(--pseint-border);-webkit-user-select:none;user-select:none;background-color:#f8fafc;flex-direction:column;width:220px;min-width:220px;display:flex;overflow-y:auto}.sidebar-section-title{text-transform:uppercase;letter-spacing:.5px;color:#475569;background-color:#e2e8f0;border-bottom:1px solid #cbd5e1;padding:8px 12px 4px;font-size:.78rem;font-weight:700}.sidebar-btn-grid{flex-direction:column;gap:4px;padding:8px;display:flex}.pseint-cmd-btn{color:#1e293b;cursor:pointer;background:#fff;border:1px solid #cbd5e1;border-radius:5px;align-items:center;gap:8px;padding:7px 10px;font-size:.82rem;font-weight:600;transition:all .15s;display:flex;box-shadow:0 1px 2px #0000000d}.pseint-cmd-btn:hover{color:#1d4ed8;background-color:#eff6ff;border-color:#3b82f6;transform:translateY(-1px)}.pseint-cmd-btn .cmd-tag{color:#1e40af;background-color:#dbeafe;border-radius:3px;padding:1px 5px;font-family:monospace;font-size:.72rem}.op-grid{grid-template-columns:repeat(3,1fr);gap:4px;padding:8px;display:grid}.op-btn{text-align:center;cursor:pointer;background:#fff;border:1px solid #cbd5e1;border-radius:4px;padding:6px;font-family:Consolas,monospace;font-size:.9rem;font-weight:700;transition:all .15s}.op-btn:hover{color:#fff;background-color:#3b82f6;border-color:#2563eb}.pseint-main-area{background-color:#fff;flex-direction:column;flex:1;min-width:0;display:flex;overflow:hidden}.editor-toolbar{border-bottom:1px solid var(--pseint-border);background-color:#f1f5f9;justify-content:space-between;align-items:center;width:100%;padding:6px 12px;display:flex}.toolbar-group{align-items:center;gap:6px;display:flex}.tb-btn{color:#334155;cursor:pointer;background:#fff;border:1px solid #cbd5e1;border-radius:4px;align-items:center;gap:6px;padding:5px 12px;font-size:.82rem;font-weight:600;transition:all .15s;display:flex}.tb-btn:hover{background-color:#e2e8f0}.tb-btn-primary{color:#fff;background-color:#16a34a;border-color:#15803d}.tb-btn-primary:hover{background-color:#15803d}.tb-btn-stop{color:#fff;background-color:#dc2626;border-color:#b91c1c}.tb-btn-stop:hover{background-color:#b91c1c}.editor-container{flex:1;width:100%;font-family:Consolas,Courier New,Courier,monospace;font-size:14px;line-height:1.5;display:flex;position:relative;overflow:hidden}.line-numbers{background-color:var(--pseint-gutter-bg);border-right:1px solid var(--pseint-border);width:48px;min-width:48px;color:var(--pseint-gutter-text);text-align:right;-webkit-user-select:none;user-select:none;padding:10px 8px 10px 0;font-family:monospace;overflow:hidden}.editor-textarea-wrapper{flex:1;width:100%;min-width:0;height:100%;position:relative}.code-textarea{resize:none;color:#0f172a;white-space:pre;tab-size:4;background-color:#0000;border:none;outline:none;width:100%;height:100%;padding:10px;font-family:Consolas,Courier New,Courier,monospace;font-size:14px;line-height:1.5;position:absolute;top:0;left:0;overflow-x:auto}.pseint-console-panel{background-color:var(--pseint-console-bg);border-top:2px solid #334155;flex-direction:column;width:100%;height:210px;min-height:180px;display:flex}.console-header{color:#94a3b8;text-transform:uppercase;background-color:#1e293b;border-bottom:1px solid #334155;justify-content:space-between;align-items:center;padding:4px 12px;font-size:.8rem;font-weight:700;display:flex}.console-body{color:var(--pseint-console-text);flex:1;padding:10px 14px;font-family:Consolas,Courier New,Courier,monospace;font-size:13px;line-height:1.45;overflow-y:auto}.console-line{word-break:break-word;margin-bottom:2px}.console-line.system-start,.console-line.system-end{color:#38bdf8;font-weight:700}.console-line.user-input{color:var(--pseint-console-prompt);font-weight:700}.console-line.error{color:var(--pseint-console-error);font-weight:700}.console-input-row{background-color:#1e293b;border-radius:4px;align-items:center;gap:8px;margin-top:6px;padding:4px 8px;display:flex}.console-prompt-symbol{color:var(--pseint-console-prompt);font-size:15px;font-weight:700}.console-input-field{color:var(--pseint-console-prompt);background:0 0;border:none;outline:none;flex:1;font-family:Consolas,monospace;font-size:14px;font-weight:700}.console-submit-btn{color:#fff;cursor:pointer;background-color:#2563eb;border:none;border-radius:3px;padding:3px 10px;font-size:.78rem}.console-submit-btn:hover{background-color:#1d4ed8}