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ease}.toast-close[data-v-869c8152]:hover{color:var(--text-primary);transform:scale(1.05)}.toast-progress[data-v-869c8152]{position:absolute;left:5px;right:0;bottom:0;height:4px;background:var(--toast-progress-bg);transform-origin:left center;animation:toast-progress-shrink-869c8152 var(--toast-duration) linear forwards}.toast-stack-enter-active[data-v-869c8152],.toast-stack-leave-active[data-v-869c8152]{transition:transform .28s ease,opacity .28s ease}.toast-stack-enter-from[data-v-869c8152],.toast-stack-leave-to[data-v-869c8152]{opacity:0;transform:translate3d(18px,-10px,0)}.toast-stack-move[data-v-869c8152]{transition:transform .28s ease}@keyframes toast-progress-shrink-869c8152{0%{transform:scaleX(1)}to{transform:scaleX(0)}}@media(max-width:640px){.toast-viewport[data-v-869c8152]{top:12px;right:12px;left:12px}.toast-stack[data-v-869c8152]{width:100%}.toast-card[data-v-869c8152]{grid-template-columns:38px 1fr;gap:12px;padding:14px 14px 16px}.toast-badge[data-v-869c8152]{width:38px;height:38px;font-size:18px}}#app{min-height:100vh;background:linear-gradient(135deg,#f8fafc,#f1f5f9)}*{margin:0;padding:0;box-sizing:border-box}a{text-decoration:none;color:inherit}body{font-family:Roboto,Segoe UI,Tahoma,Geneva,Verdana,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}:root{--primary-color: #2563eb;--primary-dark: #1d4ed8;--primary-light: #dbeafe;--primary-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);--success-color: #059669;--success-light: #d1fae5;--warning-color: #d97706;--warning-light: #fef3c7;--danger-color: #dc2626;--danger-light: #fee2e2;--accent-color: #0891b2;--accent-light: #cffafe;--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #9e9e9e;--border-color: #e2e8f0;--border-color-light: #f1f5f9;--background: #f8fafc;--white: #ffffff;--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px -1px rgba(0, 0, 0, .1);--shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 8px 10px -6px rgba(0, 0, 0, .1);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-7: 28px;--space-8: 32px;--space-9: 36px;--space-10: 48px;--space-12: 64px;--text-xs: 11px;--text-sm: 12px;--text-base: 14px;--text-md: 15px;--text-lg: 16px;--text-xl: 18px;--text-2xl: 20px;--text-3xl: 22px;--text-4xl: 24px;--text-5xl: 28px;--text-6xl: 32px;--text-7xl: 34px;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--font-extrabold: 800;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-xl: 12px;--radius-2xl: 16px;--radius-3xl: 20px;--radius-pill: 20px;--radius-full: 50%;--z-base: 1;--z-sticky: 10;--z-modal: 1000;--z-toast: 1400;--transition-fast: all .15s ease;--transition-normal: all .2s ease;--transition-slow: all .3s ease;--focus-ring: 0 0 0 3px rgba(37, 99, 235, .1)}.container{max-width:1200px;margin:0 auto;padding:var(--space-6)}.card{background:var(--white);border-radius:var(--radius-xl);box-shadow:var(--shadow);padding:var(--space-5);margin-bottom:var(--space-4);transition:box-shadow .3s ease,transform .3s ease;border:1px solid var(--border-color)}.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}.btn{padding:10px var(--space-6);border-radius:var(--radius-lg);border:none;font-size:var(--text-base);font-weight:var(--font-semibold);cursor:pointer;transition:var(--transition-normal);text-transform:none;letter-spacing:.25px}.btn-primary{background:var(--primary-gradient);color:var(--white);box-shadow:0 2px 4px #2563eb4d}.btn-primary:hover{background:linear-gradient(135deg,#2563eb,#1e40af);box-shadow:0 4px 12px #2563eb66;transform:translateY(-1px)}.btn-secondary{background-color:var(--white);color:var(--primary-color);border:2px solid var(--primary-color)}.btn-secondary:hover{background-color:var(--primary-light);border-color:var(--primary-dark)}.btn-danger{background-color:var(--danger-color);color:var(--white)}.btn-danger:hover:not(:disabled){background-color:#b91d14}.btn:disabled{opacity:.5;cursor:not-allowed}.input{width:100%;padding:var(--space-3) var(--space-4);border:2px solid var(--border-color);border-radius:var(--radius-lg);font-size:var(--text-base);margin-bottom:var(--space-4);transition:var(--transition-normal)}.input:focus{outline:none;border-color:var(--primary-color);box-shadow:var(--focus-ring)}.label{display:block;margin-bottom:var(--space-2);font-size:var(--text-base);font-weight:var(--font-medium);color:var(--text-primary)}.textarea{width:100%;padding:var(--space-3) var(--space-4);border:2px solid var(--border-color);border-radius:var(--radius-lg);font-size:var(--text-base);font-family:inherit;resize:vertical;min-height:100px;margin-bottom:var(--space-4);transition:var(--transition-normal)}.textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:var(--focus-ring)}.header{background:linear-gradient(135deg,var(--white) 0%,#f1f5f9 100%);border-bottom:1px solid var(--border-color);padding:var(--space-4) var(--space-6);display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow)}.header-title{font-size:var(--text-3xl);font-weight:var(--font-semibold);color:var(--primary-color);background:linear-gradient(135deg,#2563eb,#0891b2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav{display:flex;gap:var(--space-4);align-items:center}.nav-link{color:var(--text-secondary);text-decoration:none;font-size:var(--text-base);font-weight:var(--font-medium);transition:color .2s}.nav-link:hover{color:var(--primary-color)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--space-4);margin-top:var(--space-6)}.class-card{background:var(--white);border-radius:var(--radius-2xl);overflow:hidden;box-shadow:var(--shadow);cursor:pointer;transition:var(--transition-slow);border:1px solid var(--border-color)}.class-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.class-header{background:var(--primary-gradient);color:var(--white);padding:var(--space-7);min-height:130px;position:relative;overflow:hidden}.class-header:before{content:"";position:absolute;top:-50%;right:-50%;width:100%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.1) 0%,transparent 70%);pointer-events:none}.class-title{font-size:var(--text-4xl);font-weight:var(--font-semibold);margin-bottom:6px;text-shadow:0 1px 2px rgba(0,0,0,.1)}.class-section{font-size:var(--text-base);opacity:.9}.class-body{padding:var(--space-4)}.class-footer{border-top:1px solid var(--border-color);padding:var(--space-3) var(--space-4);display:flex;justify-content:flex-end}.error{color:var(--danger-color);font-size:var(--text-base);margin-top:var(--space-2)}.success{color:var(--success-color);font-size:var(--text-base);margin-top:var(--space-2)}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#0f172a99;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:center;z-index:var(--z-modal);animation:fadeIn .2s ease}.modal-content{background:var(--white);border-radius:var(--radius-2xl);padding:var(--space-7);max-width:500px;width:90%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg);animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.modal-header{font-size:var(--text-3xl);font-weight:var(--font-semibold);margin-bottom:var(--space-6);color:var(--text-primary)}.modal-footer,.form-actions{display:flex;justify-content:flex-end;gap:var(--space-3);margin-top:var(--space-6)}.empty-state{text-align:center;padding:var(--space-12) var(--space-6);color:var(--text-secondary)}.empty-state-icon{font-size:64px;margin-bottom:var(--space-5);filter:grayscale(.3)}.empty-state-text{font-size:var(--text-xl);font-weight:var(--font-medium)}.loading{text-align:center;padding:var(--space-10);color:var(--text-secondary)}.assignment-card{border-left:4px solid var(--primary-color);border-radius:var(--radius-xl)}.assignment-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:var(--space-3)}.assignment-title{font-size:var(--text-xl);font-weight:var(--font-semibold);color:var(--text-primary)}.assignment-points{background:linear-gradient(135deg,var(--primary-light) 0%,#bfdbfe 100%);color:var(--primary-dark);padding:6px 14px;border-radius:var(--radius-pill);font-size:var(--text-sm);font-weight:var(--font-semibold)}.assignment-description{color:var(--text-secondary);font-size:var(--text-base);margin-bottom:var(--space-3)}.assignment-due{font-size:var(--text-sm);color:var(--text-secondary)}.badge{display:inline-block;padding:6px 14px;border-radius:var(--radius-pill);font-size:var(--text-sm);font-weight:var(--font-semibold)}.badge-success{background:linear-gradient(135deg,#d1fae5,#a7f3d0);color:var(--success-color)}.badge-warning{background:linear-gradient(135deg,#fef3c7,#fde68a);color:var(--warning-color)}.badge-danger{background:linear-gradient(135deg,#fee2e2,#fecaca);color:var(--danger-color)}.header-left{display:flex;align-items:center;gap:var(--space-4)}.logo{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.logo-image{display:block;width:40px;height:40px}.section-content{margin-top:var(--space-6)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-4)}.section-title{font-size:var(--text-xl);font-weight:var(--font-medium);margin-bottom:var(--space-4);color:var(--text-primary)}.section-title--large{font-size:var(--text-2xl)}.section-title--bordered{padding-bottom:var(--space-2);border-bottom:2px solid var(--border-color);margin-top:var(--space-6)}.section-title--bordered:first-child{margin-top:0}.btn-sm{padding:var(--space-2) var(--space-4);font-size:13px}.btn-icon{padding:var(--space-2) var(--space-4);font-size:var(--text-base)}.btn-large{padding:1rem 2rem;font-size:1.1rem;min-width:200px}.form-group{margin-bottom:var(--space-4)}.modal-description{font-size:var(--text-base);color:var(--text-secondary);margin-bottom:var(--space-6);line-height:1.5}.list{display:flex;flex-direction:column;gap:var(--space-4)}.list-card{cursor:pointer;transition:var(--transition-slow);border-left:4px solid var(--primary-color);position:relative;overflow:hidden;border-radius:var(--radius-xl)}.list-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}.list-card--overdue{border-left-color:#f44336;background:linear-gradient(to right,rgba(244,67,54,.03) 0%,transparent 100%)}.list-card--completed{border-left-color:#4caf50;background:linear-gradient(to right,rgba(76,175,80,.03) 0%,transparent 100%)}.status-badge{display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--radius-pill);font-size:var(--text-sm);font-weight:var(--font-semibold);white-space:nowrap;gap:6px;transition:var(--transition-normal)}.status-badge--completed{background:linear-gradient(135deg,#d1fae5,#a7f3d0);color:#047857}.status-badge--started{background:linear-gradient(135deg,#fef3c7,#fde68a);color:#b45309}.status-badge--overdue{background:linear-gradient(135deg,#fee2e2,#fecaca);color:#b91c1c;animation:pulse 2s infinite}.status-badge--due{background:linear-gradient(135deg,#dbeafe,#bfdbfe);color:#1d4ed8}.status-badge--not-started{background:linear-gradient(135deg,#f1f5f9,#e2e8f0);color:#64748b}.status-badge--completed-border{background:#e8f5e9;color:#2e7d32;border:1px solid #81c784}.status-badge--started-border{background:#fff3e0;color:#e65100;border:1px solid #ffb74d}.status-badge--overdue-border{background:#ffebee;color:#c62828;border:1px solid #e57373;animation:pulse 2s infinite}.status-badge--due-border{background:#e3f2fd;color:#1565c0;border:1px solid #64b5f6}.status-badge--pending{color:#ff9800;border-color:#ff9800;background:#fff3e0}.status-badge--accepted{color:#4caf50;border-color:#4caf50;background:#e8f5e9}.status-badge--rejected{color:#f44336;border-color:#f44336;background:#ffebee}.status-badge--suspended{color:#0e7490;border-color:#0e7490;background:#cffafe}.status-badge--removed{color:#757575;border-color:#757575;background:#fafafa}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.fade-in{animation:fadeIn .3s}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:var(--space-4);padding:var(--space-5);background:linear-gradient(135deg,var(--primary-light) 0%,#e0f2fe 100%);border-radius:var(--radius-xl);border:1px solid var(--border-color)}.stat-item{display:flex;flex-direction:column;align-items:center;text-align:center;padding:var(--space-2)}.stat-label{font-size:var(--text-sm);color:var(--text-secondary);margin-bottom:6px;font-weight:var(--font-semibold);text-transform:uppercase;letter-spacing:.5px}.stat-value{font-size:var(--text-5xl);font-weight:var(--font-bold);color:var(--text-primary)}.stat-value--success{color:#4caf50}.stat-value--danger{color:#f44336}.stat-value--primary{color:var(--primary-color)}.stats--horizontal{display:flex;gap:var(--space-6);background:linear-gradient(135deg,#f5f7fa,#c3cfe2);border-top:1px solid var(--border-color)}.stats--horizontal .stat-item{display:flex;align-items:center;gap:var(--space-3);flex-direction:row}.stats--horizontal .stat-value{font-weight:var(--font-bold);color:var(--primary-color);line-height:1}.stats--horizontal 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var(--border-color);border-radius:var(--radius-sm);font-size:var(--text-base);font-weight:var(--font-medium);cursor:pointer;background:var(--white);transition:var(--transition-normal)}.status-select:hover{border-color:var(--primary-color)}.status-select:focus{outline:none;border-color:var(--primary-color);box-shadow:var(--focus-ring)}.text-secondary{color:var(--text-secondary)}.text-small{font-size:var(--text-sm)}.text-medium{font-size:var(--text-base)}.text-monospace{font-family:monospace}.text-italic{font-style:italic}.text-muted{color:var(--text-muted);font-style:italic}.mb-0{margin-bottom:0}.mb-1{margin-bottom:var(--space-2)}.mb-2{margin-bottom:var(--space-4)}.mb-3{margin-bottom:var(--space-6)}.gap-1{gap:var(--space-2)}.gap-2{gap:var(--space-4)}.flex{display:flex}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.justify-end{justify-content:flex-end}.flex-1{flex:1}.flex-shrink-0{flex-shrink:0}.loading-spinner{width:var(--space-10);height:var(--space-10);border:4px solid var(--border-color);border-top-color:var(--primary-color);border-right-color:var(--accent-color);border-radius:var(--radius-full);animation:spin .8s linear infinite;margin:0 auto var(--space-4)}@keyframes spin{to{transform:rotate(360deg)}}.tabs{display:flex;overflow:hidden;overflow-x:auto;gap:var(--space-2);border-bottom:2px solid var(--border-color);margin-bottom:var(--space-6);background:linear-gradient(to bottom,transparent,rgba(226,232,240,.3));padding-top:var(--space-2)}.tab-button{padding:14px var(--space-7);background:none;border:none;border-bottom:3px solid transparent;color:var(--text-secondary);font-size:var(--text-md);font-weight:var(--font-semibold);cursor:pointer;transition:var(--transition-normal);margin-bottom:-2px;border-radius:var(--radius-lg) var(--radius-lg) 0 0}.tab-button:hover{color:var(--primary-color);background:#2563eb0d}.tab-button.active{color:var(--primary-color);border-bottom-color:var(--primary-color);background:#2563eb14}.tab-content{animation:fadeIn .3s}.progress-times{display:flex;flex-direction:column;gap:6px;padding:var(--space-3);background:var(--primary-light);border-radius:var(--radius-md);border:1px solid var(--border-color)}.progress-time{display:flex;gap:var(--space-2);font-size:13px}.progress-time__label{font-weight:var(--font-semibold);color:var(--text-secondary);min-width:80px}.progress-time__value{color:var(--text-primary)}.timestamp{font-size:10px;color:var(--text-secondary);white-space:nowrap}.banner{padding:1rem 1.25rem;border-radius:var(--radius-xl);margin-bottom:1.5rem;border-left:4px solid}.banner--info{background:linear-gradient(135deg,#dbeafe,#bfdbfe);border-left-color:#2563eb;color:#1d4ed8}.banner--success{background:linear-gradient(135deg,#d1fae5,#a7f3d0);border-left-color:#059669;color:#047857}.banner--error{background:linear-gradient(135deg,#fee2e2,#fecaca);border-left-color:#dc2626;color:#b91c1c}.banner--warning{background:linear-gradient(135deg,#fef3c7,#fde68a);border:1px solid #f59e0b;border-left-width:4px;border-radius:var(--radius-xl);padding:var(--space-4) var(--space-5);color:#92400e}.banner--warning strong{color:#d32f2f}.banner--warning ul{margin:12px 0;padding-left:24px}.banner--warning li{margin:4px 0}.info-text{font-size:var(--text-base);color:var(--text-secondary);margin-bottom:var(--space-4)}.description-text{font-size:var(--text-sm);color:var(--text-secondary);line-height:1.5}.page-title{font-size:var(--text-3xl);font-weight:var(--font-semibold);margin-bottom:var(--space-6);color:var(--text-primary)}.class-banner{background:var(--primary-gradient);color:var(--white);padding:var(--space-9);border-radius:var(--radius-2xl);margin-bottom:var(--space-6);position:relative;overflow:hidden;box-shadow:0 4px 20px #2563eb40}.class-banner:before{content:"";position:absolute;top:-50%;right:-30%;width:80%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.15) 0%,transparent 70%);pointer-events:none}.class-banner-header{display:flex;justify-content:space-between;align-items:flex-start;gap:var(--space-4);position:relative;z-index:var(--z-base)}.class-banner h2{font-size:var(--text-7xl);font-weight:var(--font-semibold);margin-bottom:10px;text-shadow:0 2px 4px rgba(0,0,0,.1)}.class-banner p{margin:6px 0;opacity:.95;font-size:var(--text-md)}.assignment-card--interactive{cursor:pointer;transition:var(--transition-slow);border-left:4px solid var(--primary-color);position:relative;overflow:hidden}.assignment-card--interactive:hover{transform:translateY(-2px);box-shadow:0 6px 16px #0000001f}.assignment-card--interactive.assignment-overdue{border-left-color:#f44336;background:linear-gradient(to right,rgba(244,67,54,.03) 0%,transparent 100%)}.assignment-card--interactive.assignment-completed{border-left-color:#4caf50;background:linear-gradient(to right,rgba(76,175,80,.03) 0%,transparent 100%)}.assignment-content{display:flex;flex-direction:column;gap:var(--space-4)}.assignment-main{flex:1}.assignment-badges{display:flex;gap:var(--space-2);flex-wrap:wrap}.assignment-meta{display:flex;flex-direction:column;gap:var(--space-3)}.assignment-detail-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-4)}.assignment-detail-title{font-size:var(--text-4xl);font-weight:var(--font-medium);color:var(--text-primary);margin:0}.section-icon{font-size:var(--text-4xl)}.section-badge{margin-left:auto;font-size:var(--text-sm);font-weight:var(--font-medium);padding:4px 12px;border-radius:var(--radius-xl);background:var(--primary-light);color:var(--primary-color)}.teacher-badge{background:var(--accent-light);color:var(--accent-color)}.ai-badge{background:#f3e8ff;color:#7c3aed}.ai-section{background:linear-gradient(135deg,#faf5ff,#f3e8ff);border-color:#e9d5ff}@media(max-width:768px){.header-left{width:100%;justify-content:space-between}.header-title{font-size:var(--text-xl);overflow:hidden;text-overflow:ellipsis}.nav{width:100%;flex-wrap:wrap;gap:var(--space-2);justify-content:flex-start}.container{padding:var(--space-4)}.grid{grid-template-columns:1fr}}@media(max-width:480px){.header-left{gap:var(--space-2)}.header-title{font-size:var(--text-lg);width:100%;order:2}.btn-sm{padding:6px var(--space-3);font-size:var(--text-sm)}.nav{gap:6px}.nav>.btn{flex:1 1 auto;min-width:fit-content}.modal-content{padding:var(--space-5);width:95%}.container{padding:var(--space-3)}}