@import"https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700&display=swap";*{margin:0;padding:0;box-sizing:border-box;font-family:Montserrat,sans-serif}body{background:linear-gradient(120deg,#2980b9,#6dd5fa);display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}.container{background-color:#fff;border-radius:10px;box-shadow:0 14px 28px #00000040,0 10px 10px #00000038;position:relative;overflow:hidden;width:768px;max-width:100%;min-height:480px}.form-container{position:absolute;top:0;height:100%;transition:all .6s ease-in-out;display:flex;align-items:center;justify-content:center;width:50%;padding:0 40px}.sign-in-container{left:0;width:50%;z-index:2}.sign-up-container{left:0;opacity:0;width:50%;z-index:1}.container.right-panel-active .sign-in-container{transform:translate(100%);opacity:0;z-index:1}.container.right-panel-active .sign-up-container{transform:translate(100%);opacity:1;z-index:5}form{background-color:#fff;display:flex;flex-direction:column;align-items:center;padding:0 20px;width:100%;height:auto;text-align:center;gap:15px}input{background-color:#eee;border:none;padding:12px 15px;width:100%;border-radius:5px;font-size:14px;color:#333}input::placeholder{color:#666}button{border-radius:20px;border:1px solid #4e4376;background-color:#4e4376;color:#fff;font-size:12px;font-weight:600;padding:12px 45px;text-transform:uppercase;transition:.3s ease-in-out;cursor:pointer;margin-top:10px}button:hover{background-color:#3a2d5e}button.ghost{background-color:transparent;border:1px solid #fff}a{font-size:13px;color:#4e4376;text-decoration:none;margin:10px 0}h1{font-weight:700;font-size:24px;color:#333;margin-bottom:10px}span{font-size:13px;color:#666;margin-bottom:10px;display:block}.overlay-container{position:absolute;top:0;left:50%;width:50%;height:100%;overflow:hidden;transition:transform .6s ease-in-out;z-index:100}.container.right-panel-active .overlay-container{transform:translate(-100%)}.overlay{background:linear-gradient(to right,#2b5876,#4e4376);color:#fff;position:relative;left:-100%;height:100%;width:200%;transform:translate(0);transition:transform .6s ease-in-out}.container.right-panel-active .overlay{transform:translate(50%)}.overlay-panel{position:absolute;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:0 40px;text-align:center;top:0;height:100%;width:50%;transform:translate(0);transition:transform .6s ease-in-out}.overlay-left{transform:translate(-20%)}.overlay-right{right:0;transform:translate(0)}.container.right-panel-active .overlay-left{transform:translate(0)}.container.right-panel-active .overlay-right{transform:translate(20%)}.error-message{position:fixed;top:20px;left:50%;transform:translate(-50%);background-color:#f44;color:#fff;padding:12px 20px;border-radius:5px;display:flex;align-items:center;z-index:1000;box-shadow:0 3px 10px #0003;font-size:14px}.error-message button{background:none;border:none;color:#fff;margin-left:15px;cursor:pointer;font-size:1.2rem;padding:0;width:auto}@media (max-width: 768px){.container{flex-direction:column;min-height:100vh;border-radius:0}.form-container{position:relative;width:100%;height:auto;padding:20px;opacity:1!important;transform:translate(0)!important}.sign-up-container,.sign-in-container{width:100%}.overlay-container{display:none}form{padding:20px}button{width:100%;max-width:100%}}:root{--sidebar-width: 280px;--primary: #4e4376;--primary-light: #6d5d95;--secondary: #2b5876;--accent: #3a7bd5;--accent-light: #5a9bff;--light: #f8f9fa;--light-2: #f1f3f5;--medium: #e9ecef;--dark: #495057;--success: #28a745;--success-light: #42c962;--danger: #dc3545;--danger-light: #ff4757;--text: #212529;--text-light: #6c757d;--border-radius: 10px;--box-shadow: 0 4px 12px rgba(0, 0, 0, .08);--transition: all .3s cubic-bezier(.25, .8, .25, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Montserrat,-apple-system,BlinkMacSystemFont,sans-serif;background-color:var(--light);color:var(--text);line-height:1.6;min-height:100vh;overflow-x:hidden}.dashboard-container{display:grid;grid-template-columns:var(--sidebar-width) 1fr;min-height:100vh}.sidebar{background-color:var( --primary );color:#fff;position:fixed;width:var(--sidebar-width);height:100vh;padding:2rem 0;overflow-y:auto;z-index:100;box-shadow:4px 0 20px #0000001a}.logo{text-align:center;padding:0 2rem 2rem;border-bottom:1px solid rgba(255,255,255,.1)}.logo h1{font-size:1.5rem;font-weight:700;letter-spacing:.5px;color:#fff;margin:0}.nav-menu{padding:1.5rem 0}.nav-menu ul{list-style:none;padding:0}.nav-menu li{margin:0}.nav-menu li button.nav-link{display:flex;align-items:center;padding:.9rem 2rem;color:#ffffffe6;text-decoration:none;transition:var(--transition);font-weight:500;background:none;border:none;width:100%;text-align:left;cursor:pointer}.nav-menu li button.nav-link:hover{background:#ffffff1a;transform:translate(5px)}.nav-menu li button.nav-link svg{margin-right:1rem;width:1.2rem;text-align:center}.nav-menu li.active button.nav-link{background:#ffffff26;border-left:4px solid white}.main-content{grid-column:2;padding:2.5rem;background-color:var(--light-2);min-height:100vh;margin-left:var( --sidebar-width )}.top-bar{display:flex;justify-content:flex-end;margin-bottom:2.5rem}.user-profile{display:flex;align-items:center;gap:1rem;background:#fff;padding:.7rem 1.2rem;border-radius:50px;box-shadow:var(--box-shadow);transition:var(--transition)}.user-profile:hover{transform:translateY(-2px)}.user-avatar{width:2.8rem;height:2.8rem;border-radius:50%;object-fit:cover;border:2px solid var(--accent)}.user-name{font-weight:600;color:var(--text)}.btn-logout{background:var(--danger);color:#fff;border:none;padding:.5rem 1rem;border-radius:20px;cursor:pointer;transition:var(--transition)}.btn-logout:hover{background:var(--danger-light)}.content-area{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.section{background:#fff;border-radius:var(--border-radius);padding:2rem;box-shadow:var(--box-shadow);transition:var(--transition);animation:fadeIn .4s ease-out forwards}.section:hover{transform:translateY(-5px);box-shadow:0 8px 24px #0000001a}.section-header{margin-bottom:1.5rem;display:flex;justify-content:space-between;align-items:center}.section-title{color:var(--primary);font-size:1.3rem;font-weight:700;position:relative;padding-bottom:.5rem;margin:0}.section-title:after{content:"";position:absolute;bottom:0;left:0;width:50px;height:3px;background:var(--accent)}.welcome-section{grid-column:1 / -1}.welcome-section h2{font-size:2rem;color:var(--primary);margin-bottom:.5rem;font-weight:700}.welcome-section p{color:var(--text-light);font-size:1.1rem;margin:0}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.2rem;margin-bottom:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-control{padding:.9rem 1.2rem;border:1px solid var(--medium);border-radius:8px;font-size:.95rem;transition:var(--transition);background-color:var(--light)}.form-control:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #3a7bd533}.btn{padding:.9rem 1.8rem;border-radius:8px;font-weight:600;cursor:pointer;transition:var(--transition);border:none;font-size:.95rem;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn-primary{background-color:var(--accent);color:#fff}.btn-primary:hover{background-color:var(--accent-light);transform:translateY(-2px)}.btn-complete{background-color:var(--success);color:#fff}.btn-complete:hover{background-color:var(--success-light);transform:translateY(-2px)}.btn-delete{background-color:var(--danger);color:#fff}.btn-delete:hover{background-color:var(--danger-light);transform:translateY(-2px)}.task-list{list-style:none;padding:0;margin:0}.task-item{display:grid;grid-template-columns:1fr auto;align-items:center;padding:1.2rem 0;border-bottom:1px solid var(--medium);transition:var(--transition)}.task-item:hover{background-color:#3a7bd50d}.task-info{display:flex;flex-direction:column;gap:.3rem}.task-title{font-weight:600;color:var(--text)}.task-due{font-size:.85rem;color:var(--text-light);display:flex;align-items:center;gap:.5rem}.task-due:before{content:"⏰";font-size:.8rem}.task-actions{display:flex;gap:.8rem}.marks-table{width:100%;border-collapse:separate;border-spacing:0;margin-top:1rem}.marks-table th,.marks-table td{padding:1rem;text-align:left;border-bottom:1px solid var(--medium)}.marks-table th{background-color:var(--light);color:var(--primary);font-weight:700;position:sticky;top:0}.marks-table tr:hover td{background-color:#3a7bd50d}.table-responsive{overflow-x:auto;-webkit-overflow-scrolling:touch}.empty-state{text-align:center;padding:2rem;color:var(--text-light);background-color:var(--light);border-radius:var(--border-radius)}.alert{padding:1rem;border-radius:var(--border-radius);margin-bottom:1.5rem}.alert-error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.loading{display:flex;justify-content:center;align-items:center;height:100vh;font-size:1.2rem;color:var(--primary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 1024px){.content-area{grid-template-columns:1fr}}@media (max-width: 768px){.dashboard-container{grid-template-columns:1fr}.sidebar{position:static;width:100%;height:auto;padding:1rem 0}.main-content{grid-column:1;padding:1.5rem;margin-left:0}.form-grid{grid-template-columns:1fr}.task-item{grid-template-columns:1fr;gap:1rem;padding:1rem 0}.task-actions{justify-content:flex-end}.top-bar{margin-bottom:1.5rem}.user-profile{padding:.5rem 1rem}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--light)}::-webkit-scrollbar-thumb{background:var(--primary-light);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary)}.pomodoro-timer{background:var(--accent);color:#fff;padding:2rem;border-radius:var(--border-radius);text-align:center;box-shadow:var(--box-shadow);transition:var(--transition);margin-bottom:2rem;overflow:hidden;position:relative}.pomodoro-timer.pomodoro{background:var(--danger);background:linear-gradient(135deg,var(--danger),#c0392b)}.pomodoro-timer.shortBreak{background:var(--success);background:linear-gradient(135deg,var(--success),#27ae60)}.pomodoro-timer.longBreak{background:var(--primary);background:linear-gradient(135deg,var(--primary),#2c3e50)}.timer-modes{display:flex;justify-content:center;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}.timer-modes button{background:#fff3;border:none;padding:.5rem 1.5rem;border-radius:50px;color:#fff;cursor:pointer;transition:var(--transition);font-weight:500;font-size:.9rem;min-width:100px}.timer-modes button.active{background:#fff;color:var(--text);font-weight:600;box-shadow:0 2px 8px #0000001a}.timer-modes button:not(.active):hover{background:#ffffff4d;transform:translateY(-2px)}.timer-display{margin:1.5rem 0;position:relative}.timer-display h2{font-size:5rem;margin:0;font-weight:700;letter-spacing:-2px;text-shadow:0 2px 4px rgba(0,0,0,.2);font-family:Roboto Mono,monospace}.timer-controls{display:flex;justify-content:center;gap:1.5rem;margin:2rem 0 1rem}.timer-controls button{background:#fff;color:var(--text);border:none;padding:.8rem 2rem;border-radius:50px;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:.5rem;transition:var(--transition);box-shadow:0 2px 8px #0000001a;text-transform:uppercase;font-size:.9rem;letter-spacing:.5px}.timer-controls button:hover{transform:translateY(-3px);box-shadow:0 4px 12px #00000026}.timer-controls button:active{transform:translateY(1px)}.timer-stats{display:flex;justify-content:center;gap:2rem;font-size:.9rem;opacity:.9;margin-top:1.5rem;flex-wrap:wrap}.timer-stats p{display:flex;align-items:center;gap:.5rem;background:#ffffff1a;padding:.5rem 1rem;border-radius:50px}@media (max-width: 768px){.pomodoro-timer{padding:1.5rem}.timer-display h2{font-size:3.5rem}.timer-modes{gap:.75rem}.timer-modes button{padding:.5rem 1rem;min-width:auto;flex-grow:1}.timer-controls{gap:1rem;flex-wrap:wrap}.timer-controls button{padding:.7rem 1.2rem;font-size:.8rem}.timer-stats{gap:1rem}}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.02)}to{transform:scale(1)}}.pomodoro-timer.running{animation:pulse 2s infinite}.ai-assistant{padding:1rem;background-color:#f9fafb;border:1px solid #d1d5db;border-radius:8px;margin-top:1rem}.doubt-input{width:100%;padding:.75rem;border:1px solid #ccc;border-radius:6px;resize:vertical;margin-bottom:.75rem;font-size:1rem}.ai-button{background-color:#3b82f6;color:#fff;padding:.6rem 1rem;border:none;border-radius:6px;cursor:pointer;font-weight:700}.ai-button.loading{opacity:.7;pointer-events:none}.spinner{width:16px;height:16px;border:2px solid #ffffff;border-top:2px solid #3b82f6;border-radius:50%;display:inline-block;margin-right:8px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.ai-error{color:red;margin-top:10px}.ai-clarification{margin-top:1rem;background-color:#f1f5f9;padding:.75rem;border-radius:6px}.markdown-content{font-size:1rem;line-height:1.5}.chart-container{background:#fff;padding:1.5rem;border-radius:10px;box-shadow:0 4px 12px #00000014;margin-bottom:2rem}.chart-controls{display:flex;gap:1rem;margin-bottom:1.5rem}.chart-controls button{padding:.5rem 1rem;border:none;background:#f1f3f5;border-radius:20px;cursor:pointer;transition:all .3s ease;font-size:.9rem}.chart-controls button.active{background:#4e4376;color:#fff}.chart-controls button:hover{transform:translateY(-2px)}.chart-loading{text-align:center;padding:2rem;color:#6c757d}