@import"https://fonts.googleapis.com/css2?family=Bitter:wght@400;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap";:root{--color-blue-50: #eff6ff;--color-blue-100: #dbeafe;--color-blue-200: #bfdbfe;--color-blue-300: #93c5fd;--color-blue-500: #3b82f6;--color-blue-600: #2563eb;--color-blue-700: #1d4ed8;--color-blue-800: #1e40af;--color-blue-900: #1e3a8a;--color-slate-50: #f8fafc;--color-slate-100: #f1f5f9;--color-slate-200: #e2e8f0;--color-slate-300: #cbd5e1;--color-slate-400: #94a3b8;--color-slate-500: #64748b;--color-slate-600: #475569;--color-slate-700: #334155;--color-slate-800: #1e293b;--color-slate-900: #0f172a;--color-slate-950: #020617;--color-amber-50: #fffbeb;--color-amber-100: #fef3c7;--color-amber-400: #fbbf24;--color-amber-500: #f59e0b;--color-amber-600: #d97706;--color-emerald-50: #ecfdf5;--color-emerald-100: #d1fae5;--color-emerald-600: #059669;--color-emerald-700: #047857;--color-red-50: #fef2f2;--color-red-100: #fee2e2;--color-red-600: #dc2626;--color-red-700: #b91c1c;--color-surface-dark: #0f1923;--color-surface-dark-border: rgba(255, 255, 255, .07);--color-surface-dark-hover: rgba(255, 255, 255, .08);--color-surface-dark-active: rgba(255, 255, 255, .13);--color-bg-page: var(--color-slate-50);--color-bg-surface: #ffffff;--color-bg-subsurface: var(--color-slate-100);--color-text-primary: var(--color-slate-900);--color-text-secondary: var(--color-slate-600);--color-text-muted: var(--color-slate-400);--color-text-on-dark: #ffffff;--color-interactive: var(--color-blue-600);--color-interactive-hover: var(--color-blue-700);--color-interactive-light: var(--color-blue-50);--color-interactive-border: var(--color-blue-200);--color-accent-gold: var(--color-amber-500);--color-accent-gold-hover: var(--color-amber-600);--color-accent-gold-light: var(--color-amber-50);--color-success: var(--color-emerald-600);--color-success-light: var(--color-emerald-50);--color-danger: var(--color-red-600);--color-danger-light: var(--color-red-50);--color-border-subtle: var(--color-slate-100);--color-border-card: var(--color-slate-200);--color-border-strong: var(--color-slate-400);--color-focus-ring: var(--color-blue-500);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--shadow-card: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);--shadow-md: 0 4px 8px rgba(15, 23, 42, .08), 0 2px 4px rgba(15, 23, 42, .04);--shadow-lg: 0 8px 24px rgba(15, 23, 42, .1), 0 4px 8px rgba(15, 23, 42, .06);--font-headline: "Bitter", "Georgia", serif;--font-family: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{font-family:var(--font-family);background-color:var(--color-bg-page);color:var(--color-text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100dvh}h1,h2,h3,h4,h5,h6{font-family:var(--font-headline);color:var(--color-text-primary);font-weight:700;line-height:1.25}:focus-visible{outline:2px solid var(--color-focus-ring);outline-offset:2px}.app-container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--space-4)}@media(min-width:768px){.app-container{padding:0 var(--space-6)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:44px;padding:var(--space-2) var(--space-4);font-family:var(--font-family);font-size:.9rem;font-weight:600;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:background-color .15s ease,border-color .15s ease,box-shadow .15s ease;-webkit-user-select:none;user-select:none;text-decoration:none;letter-spacing:-.01em}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--color-interactive);color:#fff;border-color:var(--color-interactive)}.btn-primary:hover:not(:disabled){background-color:var(--color-interactive-hover);border-color:var(--color-interactive-hover)}.btn-secondary{background-color:var(--color-bg-surface);color:var(--color-text-primary);border-color:var(--color-border-card)}.btn-secondary:hover:not(:disabled){background-color:var(--color-bg-subsurface);border-color:var(--color-border-strong)}.btn-ghost{background-color:transparent;color:var(--color-text-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background-color:var(--color-bg-subsurface);color:var(--color-text-primary)}.btn-sm{min-height:36px;padding:var(--space-1) var(--space-3);font-size:.825rem}.card{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-5);box-shadow:var(--shadow-card)}.badge{display:inline-flex;align-items:center;gap:var(--space-1);padding:3px var(--space-3);font-size:.72rem;font-weight:600;border-radius:var(--radius-sm);letter-spacing:.02em}.badge-blue{background-color:var(--color-interactive-light);color:var(--color-interactive-hover);border:1px solid var(--color-interactive-border)}.badge-amber{background-color:var(--color-accent-gold-light);color:#92400e;border:1px solid var(--color-amber-100)}.badge-slate{background-color:var(--color-bg-subsurface);color:var(--color-text-secondary);border:1px solid var(--color-border-card)}.badge-emerald{background-color:var(--color-success-light);color:var(--color-emerald-700);border:1px solid var(--color-emerald-100)}.badge-red{background-color:var(--color-danger-light);color:var(--color-red-700);border:1px solid var(--color-red-100)}.badge-teal{@extend .badge-blue;}.badge-gold{@extend .badge-amber;}.form-group{margin-bottom:var(--space-4)}.form-label{display:block;font-size:.825rem;font-weight:600;color:var(--color-text-secondary);margin-bottom:var(--space-1)}.form-input,.form-select,.form-textarea{width:100%;min-height:44px;padding:var(--space-2) var(--space-3);font-family:inherit;font-size:.9rem;color:var(--color-text-primary);background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-md);transition:border-color .15s ease,box-shadow .15s ease}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-focus-ring);box-shadow:0 0 0 3px #3b82f61f}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#0f172a99;display:flex;align-items:center;justify-content:center;padding:var(--space-4);z-index:1000}.modal-content{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-xl);max-width:600px;width:100%;max-height:88vh;overflow-y:auto;box-shadow:var(--shadow-lg);padding:var(--space-6)}.alert{padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);font-size:.875rem;margin-bottom:var(--space-4);display:flex;align-items:flex-start;gap:var(--space-3)}.alert-info{background-color:var(--color-interactive-light);border:1px solid var(--color-interactive-border);color:var(--color-interactive-hover)}.alert-warning{background-color:var(--color-accent-gold-light);border:1px solid var(--color-amber-100);color:#92400e}.alert-danger{background-color:var(--color-danger-light);border:1px solid var(--color-red-100);color:var(--color-danger)}.student-header{background-color:var(--color-surface-dark);color:var(--color-text-on-dark);border-bottom:1px solid var(--color-surface-dark-border);position:sticky;top:0;z-index:100}.student-header-inner{display:flex;align-items:center;justify-content:space-between;height:58px;gap:var(--space-4)}.brand-logo{display:flex;align-items:center;gap:var(--space-3);text-decoration:none;color:var(--color-text-on-dark)}.brand-title{font-family:var(--font-headline);font-size:1.15rem;font-weight:700;letter-spacing:-.01em;color:#fff}.brand-subtitle{font-size:.7rem;font-weight:500;color:#ffffff6b;letter-spacing:.01em;margin-top:1px}.student-primary-nav{display:flex;align-items:center;gap:2px}.student-nav-tab{display:inline-flex;align-items:center;gap:var(--space-2);padding:6px 14px;font-family:var(--font-family);font-size:.85rem;font-weight:600;color:#ffffff8c;border-radius:var(--radius-md);text-decoration:none;white-space:nowrap;min-height:38px;border:1px solid transparent;background:none;cursor:pointer;transition:background-color .12s ease,color .12s ease}.student-nav-tab:hover{background-color:var(--color-surface-dark-hover);color:#fff}.student-nav-tab.active{background-color:var(--color-surface-dark-active);color:#fff;border-color:#ffffff1f}.material-context-bar{background-color:var(--color-bg-surface);border-bottom:1px solid var(--color-border-subtle);padding:var(--space-2) 0}.material-context-inner{display:flex;align-items:center;gap:var(--space-3)}.material-picker-trigger{display:inline-flex;align-items:center;gap:var(--space-2);padding:6px 12px;height:36px;background-color:var(--color-bg-subsurface);border:1px solid var(--color-border-card);border-radius:var(--radius-md);font-family:var(--font-family);font-size:.875rem;font-weight:600;color:var(--color-text-primary);cursor:pointer;transition:border-color .15s ease,background-color .15s ease;max-width:360px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.material-picker-trigger:hover{border-color:var(--color-interactive);background-color:var(--color-interactive-light)}.material-picker-trigger-label{font-size:.72rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.06em;flex-shrink:0}.material-picker-wrapper{position:relative}.material-picker-panel{position:absolute;top:calc(100% + 6px);left:0;background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);min-width:280px;max-width:400px;z-index:200;overflow:hidden}.material-picker-header{padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-border-subtle);font-size:.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.06em}.material-picker-list{padding:var(--space-2);max-height:280px;overflow-y:auto}.material-picker-item{display:block;width:100%;padding:var(--space-3) var(--space-3);text-align:left;border:none;background:none;border-radius:var(--radius-md);cursor:pointer;font-family:var(--font-family);transition:background-color .1s ease}.material-picker-item:hover{background-color:var(--color-bg-subsurface)}.material-picker-item.active{background-color:var(--color-interactive-light)}.material-picker-item-title{font-size:.875rem;font-weight:600;color:var(--color-text-primary);line-height:1.4}.material-picker-item.active .material-picker-item-title{color:var(--color-interactive)}.material-picker-item-sub{font-size:.775rem;color:var(--color-text-muted);margin-top:2px}.summary-card{background:linear-gradient(135deg,var(--color-blue-900) 0%,var(--color-blue-700) 100%);border-radius:var(--radius-xl);padding:var(--space-6);color:#fff;margin-bottom:var(--space-5);position:relative;overflow:hidden}.summary-card:before{content:"";position:absolute;top:-40px;right:-40px;width:180px;height:180px;border-radius:50%;background-color:#ffffff0a}.summary-greeting{font-family:var(--font-headline);font-size:1.5rem;font-weight:700;color:#fff;margin-bottom:var(--space-2);line-height:1.25}.summary-text{font-size:.9rem;color:#ffffffc7;line-height:1.6;max-width:640px}.summary-meta{display:flex;align-items:center;gap:var(--space-2);margin-top:var(--space-4);flex-wrap:wrap}.summary-tag{display:inline-flex;align-items:center;gap:var(--space-1);padding:3px 10px;background-color:#ffffff1f;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;color:#ffffffd9}.beranda-progress-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-3);margin-bottom:var(--space-5)}.progress-stat-card{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-4) var(--space-5);box-shadow:var(--shadow-sm)}.progress-stat-label{font-size:.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:var(--space-2)}.progress-stat-value{font-family:var(--font-headline);font-size:1.75rem;font-weight:700;color:var(--color-text-primary);line-height:1}.progress-stat-sub{font-size:.8rem;color:var(--color-text-muted);margin-top:var(--space-1)}.topic-weakness-list{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-2)}.el-tab-bar{display:flex;align-items:center;gap:2px;background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-2);overflow-x:auto;scrollbar-width:none}.el-tab-bar::-webkit-scrollbar{display:none}.el-tab-back{display:inline-flex;align-items:center;gap:var(--space-1);padding:6px 12px;font-family:var(--font-family);font-size:.8rem;font-weight:600;color:var(--color-text-muted);border:none;background:none;cursor:pointer;border-radius:var(--radius-md);white-space:nowrap;transition:color .12s ease,background-color .12s ease;min-height:36px;flex-shrink:0}.el-tab-back:hover{color:var(--color-text-primary);background-color:var(--color-bg-subsurface)}.el-tab-divider{width:1px;height:18px;background-color:var(--color-border-card);flex-shrink:0;margin:0 var(--space-1)}.el-tab-item{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;font-family:var(--font-family);font-size:.825rem;font-weight:600;color:var(--color-text-muted);border:1px solid transparent;background:none;cursor:pointer;border-radius:var(--radius-md);white-space:nowrap;min-height:36px;transition:background-color .12s ease,color .12s ease}.el-tab-item:hover{background-color:var(--color-bg-subsurface);color:var(--color-text-primary)}.el-tab-active{background-color:var(--color-surface-dark);color:#fff}.el-tab-active:hover{background-color:var(--color-blue-800);color:#fff}.el-tab-icon{display:flex;align-items:center;opacity:.7}.el-tab-active .el-tab-icon{opacity:1}.el-hub-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-3)}@media(max-width:580px){.el-hub-grid{grid-template-columns:1fr}}@media(min-width:900px){.el-hub-grid{grid-template-columns:repeat(3,1fr)}}.el-hub-card{display:flex;align-items:flex-start;gap:var(--space-4);padding:var(--space-5);background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);cursor:pointer;text-align:left;font-family:var(--font-family);transition:border-color .15s ease,box-shadow .15s ease,transform .12s ease;box-shadow:var(--shadow-sm)}.el-hub-card--wide{grid-column:1 / -1}.el-hub-card:hover{border-color:var(--color-interactive);box-shadow:var(--shadow-md);transform:translateY(-1px)}.el-hub-card:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.el-hub-card-icon{width:42px;height:42px;border-radius:var(--radius-md);background-color:var(--color-interactive-light);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--color-interactive);border:1px solid var(--color-interactive-border)}.el-hub-card-body{flex:1;min-width:0}.el-hub-card-title{font-size:.95rem;font-weight:700;color:var(--color-text-primary);margin-bottom:4px}.el-hub-card-desc{font-size:.825rem;color:var(--color-text-muted);line-height:1.5}.el-hub-card-arrow{font-size:1rem;color:var(--color-text-muted);flex-shrink:0;align-self:center;transition:transform .15s ease,color .15s ease}.el-hub-card:hover .el-hub-card-arrow{transform:translate(3px);color:var(--color-interactive)}.flashcard-container{max-width:660px;margin:var(--space-5) auto;perspective:1200px}.flashcard-scene{width:100%;height:320px;cursor:pointer;-webkit-user-select:none;user-select:none}.flashcard-card{width:100%;height:100%;position:relative;transform-style:preserve-3d;transition:transform .45s cubic-bezier(.4,0,.2,1);border-radius:var(--radius-lg)}.flashcard-card.flipped{transform:rotateY(180deg)}.flashcard-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;border-radius:var(--radius-lg);padding:var(--space-6);display:flex;flex-direction:column;justify-content:space-between;border:1px solid var(--color-border-card);background-color:var(--color-bg-surface)}.flashcard-back{background-color:var(--color-interactive-light);border-color:var(--color-interactive-border);transform:rotateY(180deg)}.flashcard-question{font-family:var(--font-headline);font-size:1.25rem;font-weight:700;line-height:1.4;color:var(--color-text-primary);margin:var(--space-4) 0}.flashcard-answer{font-size:1.05rem;font-weight:600;line-height:1.55;color:var(--color-text-primary);margin:var(--space-3) 0}.flashcard-controls{display:flex;align-items:center;justify-content:space-between;max-width:660px;margin:var(--space-4) auto;gap:var(--space-3);flex-wrap:wrap}.timeline-list{position:relative;max-width:760px;margin:var(--space-5) auto;padding-left:var(--space-8)}.timeline-list:before{content:"";position:absolute;top:0;bottom:0;left:15px;width:2px;background-color:var(--color-border-card)}.timeline-item{position:relative;margin-bottom:var(--space-6)}.timeline-dot{position:absolute;left:-33px;top:5px;width:14px;height:14px;border-radius:50%;background-color:var(--color-interactive);border:3px solid var(--color-bg-page)}.timeline-card{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-md);padding:var(--space-4) var(--space-5);transition:border-color .15s ease}.timeline-card:hover{border-color:var(--color-interactive)}.timeline-date{font-size:.775rem;font-weight:700;color:var(--color-interactive);text-transform:uppercase;letter-spacing:.05em}.timeline-title{font-family:var(--font-headline);font-size:1.05rem;font-weight:700;margin:var(--space-1) 0 var(--space-2) 0}.tory-container{max-width:820px;margin:0 auto;background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;height:580px}.tory-messages{flex:1;overflow-y:auto;padding:var(--space-5);display:flex;flex-direction:column;gap:var(--space-4);background-color:var(--color-bg-subsurface)}.chat-bubble{max-width:80%;padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);font-size:.9rem;line-height:1.55}.bubble-student{align-self:flex-end;background-color:var(--color-interactive);color:#fff;border-radius:var(--radius-md) var(--radius-md) 4px var(--radius-md)}.bubble-tory{align-self:flex-start;background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);color:var(--color-text-primary);border-radius:var(--radius-md) var(--radius-md) var(--radius-md) 4px}.tory-input-bar{display:flex;gap:var(--space-2);padding:var(--space-3) var(--space-4);background-color:var(--color-bg-surface);border-top:1px solid var(--color-border-card)}.teacher-header{background-color:var(--color-surface-dark);color:var(--color-text-on-dark);border-bottom:1px solid var(--color-surface-dark-border);position:sticky;top:0;z-index:100}.teacher-header-inner{display:flex;align-items:center;justify-content:space-between;height:58px;gap:var(--space-4)}.teacher-layout{display:flex;min-height:calc(100dvh - 58px);background-color:var(--color-bg-page)}.teacher-sidebar{width:236px;background-color:var(--color-surface-dark);color:var(--color-text-on-dark);border-right:1px solid var(--color-surface-dark-border);padding:var(--space-4) var(--space-3);display:flex;flex-direction:column;justify-content:space-between;flex-shrink:0}@media(max-width:768px){.teacher-layout{flex-direction:column}.teacher-sidebar{width:100%;padding:var(--space-3);border-right:none;border-bottom:1px solid var(--color-surface-dark-border)}}.teacher-sidebar-brand{padding:0 var(--space-2) var(--space-4) var(--space-2);border-bottom:1px solid var(--color-surface-dark-border);margin-bottom:var(--space-4)}.teacher-sidebar-title{font-size:.68rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#ffffff61;margin-bottom:3px}.teacher-sidebar-subtitle{font-size:.875rem;font-weight:700;color:#ffffffe6}.teacher-sidebar-nav{display:flex;flex-direction:column;gap:2px}@media(max-width:768px){.teacher-sidebar-nav{flex-direction:row;overflow-x:auto;scrollbar-width:none}.teacher-sidebar-nav::-webkit-scrollbar{display:none}}.teacher-sidebar-link{display:flex;align-items:center;gap:var(--space-3);padding:9px 12px;color:#ffffff85;font-family:var(--font-family);font-size:.85rem;font-weight:600;border-radius:var(--radius-md);border:none;background:transparent;cursor:pointer;text-align:left;min-height:44px;transition:background-color .12s ease,color .12s ease;width:100%}.teacher-sidebar-link:hover{background-color:var(--color-surface-dark-hover);color:#fff}.teacher-sidebar-link.active{background-color:var(--color-blue-600);color:#fff}.teacher-sidebar-badge{margin-left:auto;font-size:.7rem;background-color:#ffffff1a;padding:2px 6px;border-radius:var(--radius-sm);font-weight:600;color:#ffffffa6}.teacher-main-content{flex:1;padding:var(--space-6);max-width:1100px;min-width:0}@media(max-width:768px){.teacher-main-content{padding:var(--space-4)}}.dropzone{border:2px dashed var(--color-border-card);border-radius:var(--radius-lg);padding:var(--space-8) var(--space-6);text-align:center;background-color:var(--color-bg-surface);cursor:pointer;transition:border-color .15s ease,background-color .15s ease}.dropzone:hover,.dropzone.active{border-color:var(--color-interactive);background-color:var(--color-interactive-light)}.topic-bar-container{display:flex;flex-direction:column;gap:var(--space-3)}.topic-bar-item{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-radius:var(--radius-md);padding:var(--space-4)}.topic-progress-track{width:100%;height:6px;background-color:var(--color-bg-subsurface);border-radius:var(--radius-full);overflow:hidden;margin-top:var(--space-2)}.topic-progress-fill{height:100%;border-radius:var(--radius-full);transition:width .3s ease}.fill-danger{background-color:var(--color-danger)}.fill-warning{background-color:var(--color-accent-gold)}.fill-success{background-color:var(--color-success)}.chunk-card{background-color:var(--color-bg-surface);border:1px solid var(--color-border-card);border-left:3px solid var(--color-interactive);border-radius:var(--radius-md);padding:var(--space-4);margin-bottom:var(--space-3);font-size:.875rem;line-height:1.6}.privacy-notice{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);background-color:var(--color-interactive-light);border:1px solid var(--color-interactive-border);border-radius:var(--radius-md);color:var(--color-interactive-hover);font-size:.85rem;font-weight:500;margin-bottom:var(--space-5)}