@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&display=swap";
:root{--color-bg-deep:#08090d;--color-bg-surface:#0f1118;--color-bg-elevated:#161822;--color-primary-red:#ff2d55;--color-primary-blue:#00c2ff;--color-accent-purple:#a855f7;--color-accent-orange:#ff6b35;--color-success:#34d399;--color-error:#ef4444;--color-text-main:#f1f5f9;--color-text-secondary:#cbd5e1;--color-text-muted:#64748b;--color-card-bg:#ffffff0a;--color-card-border:#ffffff0f;--color-card-hover:#ffffff14;--font-main:"Outfit",system-ui,-apple-system,sans-serif;--radius-sm:12px;--radius-md:16px;--radius-lg:24px;--radius-xl:32px;--radius-full:999px;--ease-spring:cubic-bezier(.34,1.56,.64,1);--ease-smooth:cubic-bezier(.25,.8,.25,1);--transition-fast:.2s var(--ease-smooth);--transition-normal:.3s var(--ease-smooth);--gradient-primary:linear-gradient(135deg,var(--color-primary-red),var(--color-accent-purple),var(--color-primary-blue));--gradient-red-blue:linear-gradient(135deg,var(--color-primary-red)0%,var(--color-primary-blue)100%);--gradient-warm:linear-gradient(135deg,var(--color-primary-red),var(--color-accent-orange));--gradient-cool:linear-gradient(135deg,var(--color-accent-purple),var(--color-primary-blue));--shadow-glow-red:0 0 30px #ff2d5526;--shadow-glow-blue:0 0 30px #00c2ff26;--shadow-card:0 4px 24px #0000004d;--shadow-card-hover:0 8px 40px #0006}*{box-sizing:border-box;margin:0;padding:0}[data-theme=light]{--color-bg-deep:#f8f9fc;--color-bg-surface:#fff;--color-bg-elevated:#f1f3f8;--color-text-main:#0f172a;--color-text-secondary:#334155;--color-text-muted:#64748b;--color-card-bg:#ffffffb3;--color-card-border:#00000014;--color-card-hover:#ffffffe6;--shadow-card:0 2px 12px #0000000f;--shadow-card-hover:0 8px 30px #0000001a}[data-theme=light] .blob-red{opacity:.08}[data-theme=light] .blob-blue{opacity:.06}[data-theme=light] .input-dark,[data-theme=light] .textarea-dark{color:var(--color-text-main);background:#00000008}[data-theme=light] .chat-input{color:var(--color-text-main)}[data-theme=light] .chat-input-form{background:#00000008}[data-theme=light] .upload-zone{background:#00000005}[data-theme=light] .quiz-option-default{background:#00000008}[data-theme=light] .quiz-option-btn{color:var(--color-text-main)}[data-theme=light] .concept-item{background:#00000008}html{scroll-behavior:smooth}html,body{max-width:100vw;font-family:var(--font-main);background-color:var(--color-bg-deep);color:var(--color-text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;line-height:1.6;overflow-x:hidden}a{color:inherit;text-decoration:none}button{all:unset;cursor:pointer;box-sizing:border-box}.fluid-bg-container{z-index:-1;background:var(--color-bg-deep);position:fixed;inset:0;overflow:hidden}.blob-red{background:radial-gradient(circle,var(--color-primary-red)0%,transparent 55%);opacity:.12;filter:blur(100px);width:60vmax;height:60vmax;animation:22s ease-in-out infinite blobFloat1;position:absolute;top:-20%;left:-15%}.blob-blue{background:radial-gradient(circle,var(--color-primary-blue)0%,transparent 55%);opacity:.1;filter:blur(100px);width:70vmax;height:70vmax;animation:28s ease-in-out infinite blobFloat2;position:absolute;bottom:-20%;right:-15%}@keyframes blobFloat1{0%,to{transform:translate(0)scale(1)rotate(0)}25%{transform:translate(8%,12%)scale(1.15)rotate(5deg)}50%{transform:translate(-4%,8%)scale(.95)rotate(-3deg)}75%{transform:translate(6%,-5%)scale(1.08)rotate(2deg)}}@keyframes blobFloat2{0%,to{transform:translate(0)scale(1)rotate(0)}25%{transform:translate(-10%,-8%)scale(1.1)rotate(-4deg)}50%{transform:translate(5%,-12%)scale(.92)rotate(5deg)}75%{transform:translate(-6%,6%)scale(1.05)rotate(-2deg)}}.glass-card{background:var(--color-card-bg);border:1px solid var(--color-card-border);-webkit-backdrop-filter:blur(16px)saturate(180%);backdrop-filter:blur(16px)saturate(180%);border-radius:var(--radius-lg);transition:all var(--transition-normal);box-shadow:var(--shadow-card);padding:20px}.glass-card:hover{background:var(--color-card-hover);box-shadow:var(--shadow-card-hover);border-color:#ffffff1f;transform:translateY(-3px)}.btn-primary{background:var(--gradient-warm);color:#fff;border-radius:var(--radius-full);transition:all var(--transition-normal);justify-content:center;align-items:center;gap:8px;padding:14px 28px;font-size:.95rem;font-weight:600;display:inline-flex;position:relative;overflow:hidden;box-shadow:0 4px 20px #ff2d554d}.btn-primary:before{content:"";opacity:0;transition:opacity var(--transition-fast);background:linear-gradient(135deg,#fff3,#0000);position:absolute;inset:0}.btn-primary:hover{transform:translateY(-2px)scale(1.02);box-shadow:0 8px 30px #ff2d5566}.btn-primary:hover:before{opacity:1}.btn-primary:active{transform:translateY(0)scale(.98)}.btn-secondary{background:var(--gradient-cool);color:#fff;border-radius:var(--radius-full);transition:all var(--transition-normal);justify-content:center;align-items:center;gap:8px;padding:14px 28px;font-size:.95rem;font-weight:600;display:inline-flex;box-shadow:0 4px 20px #a855f740}.btn-secondary:hover{transform:translateY(-2px);box-shadow:0 8px 30px #a855f759}.btn-sm{padding:10px 18px;font-size:.85rem}.btn-ghost{border:1px solid var(--color-card-border);color:var(--color-text-secondary);border-radius:var(--radius-full);transition:all var(--transition-fast);background:0 0;align-items:center;gap:8px;padding:12px 24px;font-weight:500;display:inline-flex}.btn-ghost:hover{color:#fff;background:#ffffff0f;border-color:#ffffff26}.page-container{z-index:1;max-width:1000px;margin:0 auto;padding:20px 16px 100px;position:relative}.workspace-page-container{max-width:1440px}.heading-xl{letter-spacing:-.03em;background:var(--gradient-primary);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:16px;font-size:clamp(1.8rem,6vw,3.5rem);font-weight:800;line-height:1.1}.heading-lg{letter-spacing:-.02em;color:var(--color-text-main);font-size:clamp(1.4rem,4vw,2rem);font-weight:700}.heading-md{color:var(--color-text-main);font-size:1.1rem;font-weight:600}.text-muted{color:var(--color-text-muted)}.text-secondary{color:var(--color-text-secondary)}.text-white{color:#fff}.text-red{color:var(--color-primary-red)}.text-blue{color:var(--color-primary-blue)}.text-purple{color:var(--color-accent-purple)}.text-success{color:var(--color-success)}.text-sm{font-size:.875rem}.text-xs{font-size:.8rem}.font-semibold{font-weight:600}.font-bold{font-weight:700}.nav-link-back{color:var(--color-text-muted);transition:color var(--transition-fast);align-items:center;gap:6px;margin-bottom:24px;padding:8px 0;font-size:.9rem;font-weight:500;display:inline-flex}.nav-link-back:hover{color:var(--color-primary-blue)}.input-dark,.textarea-dark{border-radius:var(--radius-sm);border:1px solid var(--color-card-border);width:100%;color:var(--color-text-main);font-size:.95rem;font-family:var(--font-main);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);background:#0000004d;outline:none;padding:14px 16px}.input-dark:focus,.textarea-dark:focus{border-color:var(--color-primary-blue);box-shadow:0 0 0 3px #00c2ff1a}.textarea-dark{resize:vertical;line-height:1.7}.dashboard-header{justify-content:space-between;align-items:center;margin-bottom:32px;padding-top:16px;display:flex}.icon-btn-round{border-radius:50%;justify-content:center;align-items:center;padding:10px;display:flex}.stat-row{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px;display:grid}.stat-card{text-align:center;padding:20px 12px}.stat-number{background:var(--gradient-red-blue);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:2rem;font-weight:800}.stat-label{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;margin-top:4px;font-size:.8rem}.action-bar{gap:10px;margin-bottom:32px;display:flex}.action-bar>*{text-align:center;flex:1}.section-title{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px;font-size:.85rem;font-weight:600}.notes-grid{grid-template-columns:1fr;gap:12px;display:grid}@media (min-width:640px){.notes-grid{grid-template-columns:1fr 1fr}}.note-card-link{flex-direction:column;min-height:140px;display:flex;position:relative;overflow:hidden}.note-card-link:after{content:"";background:var(--gradient-red-blue);opacity:0;height:3px;transition:opacity var(--transition-fast);position:absolute;bottom:0;left:0;right:0}.note-card-link:hover:after{opacity:1}.note-card-empty{opacity:.5;border-style:dashed;flex-direction:column;grid-column:1/-1;justify-content:center;align-items:center;min-height:140px;display:flex}.note-card-footer{justify-content:space-between;align-items:center;margin-top:auto;padding-top:12px;display:flex}.create-note-container{max-width:700px;margin:0 auto}.create-note-heading{margin-bottom:4px;font-size:clamp(1.6rem,5vw,2.5rem)}.create-note-desc{color:var(--color-text-muted);margin-bottom:28px;font-size:.9rem;line-height:1.6}.form-vertical{flex-direction:column;gap:20px;display:flex}.field-group{flex-direction:column;gap:8px;display:flex}.field-label{color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em;font-size:.85rem;font-weight:600}.upload-zone{border:2px dashed var(--color-card-border);border-radius:var(--radius-md);text-align:center;cursor:pointer;transition:all var(--transition-normal);background:#00000026;padding:32px 20px}.upload-zone:hover{border-color:var(--color-primary-blue);background:#00c2ff0a}.upload-zone-icon{color:var(--color-primary-blue);margin-bottom:12px}.upload-zone-title{margin-bottom:4px;font-size:.95rem;font-weight:600}.upload-zone-hint{color:var(--color-text-muted);font-size:.8rem}.upload-file-badge{border-radius:var(--radius-full);color:var(--color-primary-blue);background:#00c2ff1a;border:1px solid #00c2ff33;align-items:center;gap:8px;margin-top:12px;padding:8px 16px;font-size:.85rem;display:inline-flex}.tab-switcher{border-radius:var(--radius-full);background:#0000004d;margin-bottom:16px;padding:4px;display:flex}.tab-btn{text-align:center;border-radius:var(--radius-full);color:var(--color-text-muted);transition:all var(--transition-fast);flex:1;padding:10px 16px;font-size:.85rem;font-weight:500}.tab-btn-active{color:#fff;background:#ffffff1a}.submit-btn-wrap{justify-content:flex-end;margin-top:8px;display:flex}.submit-btn-disabled{opacity:.6;pointer-events:none}.workspace-layout-v2{flex-direction:column;gap:24px;display:flex}@media (min-width:1024px){.workspace-layout-v2{transition:grid-template-columns var(--transition-normal);grid-template-columns:1fr 380px;align-items:start;gap:32px;display:grid}.workspace-layout-v2[data-sidebar-open=false]{grid-template-columns:1fr 48px}}.workspace-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.ai-analysis-column{flex-direction:column;gap:24px;display:flex}.workspace-title-section{margin-bottom:8px}.ai-content-grid{grid-template-columns:1fr;gap:20px;display:grid}@media (min-width:640px){.ai-content-grid{grid-template-columns:1fr 1fr}}@media (min-width:1024px){.ai-content-grid{grid-template-columns:1fr}.workspace-layout-v2[data-sidebar-open=false] .ai-content-grid{grid-template-columns:1fr 1fr}}.original-note-sidebar{transition:all var(--transition-normal);min-width:0}.original-note-sidebar.note-closed{opacity:.8}.note-sidebar-card{border-radius:var(--radius-lg);height:100%;padding:0;overflow:hidden}.note-sidebar-header{cursor:pointer;transition:all var(--transition-fast);background:#ffffff05;border-bottom:1px solid #0000;justify-content:space-between;align-items:center;height:56px;padding:16px;display:flex}.workspace-layout-v2[data-sidebar-open=false] .note-sidebar-header{justify-content:center;padding:16px 0}.workspace-layout-v2[data-sidebar-open=false] .note-sidebar-header h2,.workspace-layout-v2[data-sidebar-open=false] .note-sidebar-header .flex-row:last-child{display:none}.note-sidebar-content{padding:20px;overflow:hidden}.note-text-display{white-space:pre-wrap;color:var(--color-text-secondary);max-height:600px;font-size:.95rem;line-height:1.8;overflow-y:auto}.note-edit-area{min-height:400px;font-size:.9rem;line-height:1.6}.edit-actions{justify-content:flex-end;gap:10px;display:flex}.concepts-list{flex-direction:column;gap:12px;display:flex}.icon-btn-sm{color:var(--color-text-muted);transition:all var(--transition-fast);border-radius:8px;padding:6px}.icon-btn-sm:hover{color:#fff;background:#ffffff1a}.chat-container{flex-direction:column;height:380px;padding:0;display:flex;overflow:hidden}.chat-header{border-bottom:1px solid var(--color-card-border);align-items:center;gap:8px;padding:14px 16px;display:flex}.chat-messages{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.chat-empty-state{color:var(--color-text-muted);text-align:center;margin:auto;padding:20px;font-size:.85rem}.chat-bubble{border-radius:var(--radius-md);max-width:85%;padding:10px 14px;font-size:.88rem;line-height:1.5}.chat-bubble-user{background:var(--gradient-cool);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.chat-bubble-ai{background:#ffffff12;border-bottom-left-radius:4px;align-self:flex-start}.chat-loading{color:var(--color-text-muted);align-self:flex-start}.chat-loading-spinner{display:inline-block}.chat-input-form{border-top:1px solid var(--color-card-border);background:#00000040;gap:8px;padding:10px 12px;display:flex}.chat-input{color:#fff;font-size:.88rem;font-family:var(--font-main);background:0 0;border:none;outline:none;flex:1;padding:6px 8px}.chat-send-btn{transition:color var(--transition-fast);align-items:center;padding:8px;display:flex}.chat-send-active{color:var(--color-primary-blue)}.chat-send-inactive{color:var(--color-text-muted)}.quizzes-header{align-items:center;gap:12px;margin-bottom:24px;display:flex}.quizzes-heading{margin:0;font-size:clamp(1.5rem,5vw,2.5rem)}.quizzes-grid{grid-template-columns:1fr;gap:12px;display:grid}@media (min-width:640px){.quizzes-grid{grid-template-columns:1fr 1fr}}.quiz-card{flex-direction:column;display:flex}.quiz-empty-state{text-align:center;opacity:.6;grid-column:1/-1;padding:40px 20px}.quiz-card-footer{justify-content:space-between;align-items:center;margin-top:auto;padding-top:12px;display:flex}.quiz-finished-container{justify-content:center;align-items:center;min-height:80vh;padding:20px;display:flex}.quiz-finished-card{text-align:center;width:100%;max-width:420px;padding:40px 24px}.quiz-finished-heading{margin-bottom:12px;font-size:clamp(1.6rem,5vw,2.5rem)}.quiz-finished-score{color:var(--color-text-muted);margin-bottom:28px;font-size:1.1rem}.quiz-finished-actions{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.quiz-finished-link{padding:12px 20px;font-size:.9rem;font-weight:600}.quiz-progress-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:24px;display:flex}.quiz-progress-badge{border-radius:var(--radius-full);color:var(--color-text-secondary);white-space:nowrap;background:#ffffff14;padding:6px 14px;font-size:.8rem;font-weight:600}.quiz-question-card{max-width:700px;margin:0 auto;padding:28px 20px}@media (min-width:640px){.quiz-question-card{padding:36px}}.quiz-question-text{margin-bottom:28px;font-size:clamp(1.1rem,3vw,1.4rem);font-weight:500;line-height:1.5}.quiz-option-btn{border-radius:var(--radius-md);color:#fff;text-align:left;align-items:center;gap:14px;padding:16px;font-size:.95rem;transition:all .2s;display:flex}.quiz-option-btn:not([disabled]):hover{transform:translate(4px)}.quiz-option-btn[disabled]{cursor:default}.quiz-option-correct{border:1px solid var(--color-success);background:#34d39926}.quiz-option-wrong{border:1px solid var(--color-error);background:#ef444426}.quiz-option-default{border:1px solid var(--color-card-border);background:#0003}.quiz-option-letter{background:#ffffff14;border-radius:50%;justify-content:center;align-items:center;width:36px;min-width:36px;height:36px;font-size:.85rem;font-weight:700;display:flex}.quiz-next-container{justify-content:flex-end;margin-top:28px;display:flex}.quiz-next-btn{padding:12px 28px}.flex-col{flex-direction:column;display:flex}.flex-row{display:flex}.gap-8{gap:8px}.gap-10{gap:10px}.gap-12{gap:12px}.gap-16{gap:16px}.gap-20{gap:20px}.gap-24{gap:24px}.mb-4{margin-bottom:4px}.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mt-auto{margin-top:auto}.no-margin{margin:0}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#fff3}.mb-auto{margin-bottom:auto}.mt-12{margin-top:12px}.leading-tall{line-height:1.7}.upload-zone-processing{pointer-events:none;border-color:var(--color-primary-blue);background:#00c2ff0a}.text-error{color:var(--color-error)}.items-center{align-items:center}@media (min-width:1024px){.workspace-layout-v2:not(.note-closed) .ai-content-grid{grid-template-columns:1fr}}