*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;height:100%}body{font-family:var(--student-font-sans);background:var(--student-gradient-bg);background-size:400% 400%;background-attachment:fixed;min-height:100vh;color:var(--student-text-primary);overflow-x:hidden;animation:studentBackgroundShift 20s ease infinite}@keyframes studentBackgroundShift{0%,to{background-position:0 50%}50%{background-position:100% 50%}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:rgba(0,0,0,.2);border-radius:4px}::-webkit-scrollbar-thumb{background:var(--student-gradient-primary);border-radius:4px;border:1px solid rgba(255,255,255,.1)}::-webkit-scrollbar-thumb:hover{background:linear-gradient(135deg,#0891b2,#2563eb)}a,button{text-decoration:none;font-family:var(--student-font-sans)}.student-app-container{min-height:100vh;display:flex;flex-direction:column}.student-header{background:var(--student-bg-glass);-webkit-backdrop-filter:blur(20px) 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auto;width:100%}.student-logo-section{display:flex;align-items:center;gap:var(--student-space-md)}.student-logo-title{font-size:1.5rem;font-weight:800;background:var(--student-gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.student-logo-subtitle{color:var(--student-text-muted);font-size:.875rem}.student-profile-section{display:flex;align-items:center;gap:var(--student-space-md)}.student-notification-badge{top:-4px;right:-4px;background:var(--student-gradient-danger);color:white;border-radius:50%;width:20px;height:20px;font-size:.75rem;font-weight:600;display:flex;align-items:center;justify-content:center;border:2px solid var(--student-bg-primary);animation:studentNotificationPulse 2s infinite}@keyframes 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var(--student-space-md);font-family:var(--student-font-mono);font-size:.875rem;line-height:1.5;white-space:pre-wrap}.student-console-line.output{color:#e5e7eb}.student-console-line.error{color:var(--student-danger-color)}.student-console-line.success{color:var(--student-success-color);text-align:center}.student-console-line.user-input{color:var(--student-primary-cyan)}.student-console-input-section{padding:var(--student-space-md);background:var(--student-bg-secondary);border-top:1px solid var(--student-border-primary)}.student-terminal-input{width:100%;padding:var(--student-space-sm);background:var(--student-bg-tertiary);border:1px solid var(--student-border-primary);color:var(--student-text-primary);font-family:var(--student-font-mono)}.student-input-send-btn{padding:var(--student-space-sm);background:var(--student-gradient-primary);color:white;border:none;border-radius:4px}.student-modal-overlay{top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.7)}.student-modal-content{background:var(--student-bg-card);padding:var(--student-space-xl);border-radius:12px;text-align:center}.student-modal-actions{gap:var(--student-space-md)}.student-modal-btn{padding:var(--student-space-md);border-radius:8px;cursor:pointer}.student-modal-btn.secondary{color:var(--student-text-secondary)}.student-modal-btn.danger{background:var(--student-gradient-danger);color:white}.CodeMirror,.student-cm-host{height:100%}.CodeMirror{background:var(--student-bg-editor)!important;color:var(--student-text-primary)!important;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace!important;font-size:.95rem!important;line-height:1.6!important}.CodeMirror-gutters{background:var(--student-bg-tertiary)!important;border-right:1px solid var(--student-border-primary)!important}.CodeMirror-linenumber{color:var(--student-text-muted)!important}.CodeMirror-cursor{border-left:2px solid var(--student-accent-border)!important}.cm-s-material .CodeMirror-selected{background:rgba(59,130,246,.25)!important}.student-console-line,.student-console-output{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:.95rem;line-height:1.5rem}@keyframes spin-slow{to{transform:rotate(1turn)}}.animate-spin-slow{animation:spin-slow 1.1s linear infinite;transform-origin:50% 50%}.student-notification-badge{position:absolute;top:-2px;right:-2px;background:var(--student-danger-border);color:#fff;font-weight:700;font-size:10px;padding:2px 5px;border-radius:9999px;box-shadow:0 0 0 2px var(--student-bg-secondary)}.student-toolbar-actions{position:relative}.student-notifications-dropdown{position:absolute;top:48px;right:44px;width:280px;max-height:340px;overflow:auto;background:var(--student-bg-secondary);border:1px solid var(--student-border-primary);border-radius:.5rem;box-shadow:0 12px 24px rgba(0,0,0,.3);z-index:50}.student-notifications-header{font-weight:700;color:var(--student-text-primary)}.student-notification-item,.student-notifications-header{padding:.5rem .75rem;border-bottom:1px solid var(--student-border-primary)}.student-notification-item:last-child{border-bottom:0}.student-notification-content{color:var(--student-text-primary)}.student-notification-time{color:var(--student-text-muted);font-size:.8rem;margin-top:2px}.student-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:80}.student-modal-content{width:320px;background:var(--student-bg-secondary);color:var(--student-text-primary);border:1px solid var(--student-border-primary);border-radius:.75rem;padding:1rem}.student-modal-title{margin:0 0 .25rem;font-size:1rem}.student-modal-message{margin:0 0 .75rem;color:var(--student-text-muted)}.student-modal-actions{display:flex;gap:.5rem}.student-modal-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem .6rem;border-radius:.5rem;border:1px solid var(--student-border-primary)}.student-modal-btn.secondary{background:var(--student-bg-tertiary);color:var(--student-text-primary)}.student-modal-btn.danger{background:var(--student-danger-bg);color:var(--student-danger-contrast);border-color:var(--student-danger-border)}.student-modal-btn.danger:hover{background:var(--student-danger-bg-hover)}.student-editor-empty-hint{position:absolute;top:48px;right:12px;z-index:5;color:var(--student-text-muted);font-weight:700;pointer-events:none}.student-code-editor-wrapper{position:relative}.student-toolbar-timer{display:inline-flex;align-items:center;gap:.4rem;padding:.35rem .6rem;border-radius:.5rem;border:1px solid var(--student-border-primary);background:var(--student-bg-tertiary);color:var(--student-text-primary);font-weight:700}.student-toolbar-bell{position:relative}.student-console-message{display:inline}.student-test-interface{background:var(--student-bg-primary)}.student-code-editor-wrapper{display:flex;flex-direction:column;min-height:0}.student-cm-host{flex:1 1 auto;min-height:0}.student-console-output,.student-split-pane{min-height:0}.student-action-btn:focus-visible,.student-console-clear-btn:focus-visible,.student-editor-btn:focus-visible,.student-input-send-btn:focus-visible,.student-modal-btn:focus-visible,.student-tab-btn:focus-visible,.student-toolbar-bell:focus-visible{outline:2px solid var(--student-accent-border);outline-offset:2px;border-color:var(--student-accent-border)}.student-test-toolbar{z-index:70}.student-toast-container{z-index:90}.student-modal-overlay{z-index:100}.student-notification-item{cursor:default}.student-notification-item:hover .student-notification-content{color:var(--student-text-primary)}.student-action-btn.danger:hover{transform:translateY(-1px)}@media (max-width:1024px){.student-mobile-tabs{position:-webkit-sticky;position:sticky;top:56px;z-index:40}}@media (max-height:560px){.student-test-toolbar{padding:.5rem .75rem}.student-console-header,.student-editor-toolbar{padding:.4rem .6rem}}.CodeMirror-gutters{box-shadow:inset -1px 0 0 var(--student-border-primary)}