@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";
@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/8a480f0b521d4e75-s.8e0177b5.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7178b3e590c64307-s.b97b3418.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/caa3a2e1cccd8315-s.p.853070df.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Fallback;src:local(Arial);ascent-override:95.94%;descent-override:28.16%;line-gap-override:0.0%;size-adjust:104.76%}.geist_a71539c9-module__T19VSG__className{font-family:Geist,Geist Fallback;font-style:normal}.geist_a71539c9-module__T19VSG__variable{--font-geist-sans:"Geist","Geist Fallback"}
@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/4fa387ec64143e14-s.c1fdd6c2.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/bbc41e54d2fcbd21-s.799d8ef8.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/797e433ab948586e-s.p.dbea232f.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Mono Fallback;src:local(Arial);ascent-override:74.67%;descent-override:21.92%;line-gap-override:0.0%;size-adjust:134.59%}.geist_mono_8d43a2aa-module__8Li5zG__className{font-family:Geist Mono,Geist Mono Fallback;font-style:normal}.geist_mono_8d43a2aa-module__8Li5zG__variable{--font-geist-mono:"Geist Mono","Geist Mono Fallback"}
:root{--background:#0f172a;--foreground:#f8fafc;--card-bg:#1e293bb3;--card-border:#ffffff1a;--primary:#3b82f6;--primary-hover:#2563eb;--success:#10b981;--sidebar-bg:#0f172acc;--glass-shadow:0 8px 32px 0 #0000005e;--glass-backdrop:blur(12px);--transition-speed:.3s}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--background);color:var(--foreground);background:linear-gradient(135deg,#0f172a 0%,#1e1b4b 50%,#0f172a 100%) 0 0/200% 200%;min-height:100vh;font-family:Inter,sans-serif;animation:15s infinite gradientBG;overflow-x:hidden}@keyframes gradientBG{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}.layout{flex-direction:column;min-height:100vh;display:flex}@media (min-width:768px){.layout{flex-direction:row}}.sidebar{background:var(--sidebar-bg);width:100%;-webkit-backdrop-filter:var(--glass-backdrop);border-right:1px solid var(--card-border);z-index:10;transition:transform var(--transition-speed)cubic-bezier(.4,0,.2,1);flex-direction:column;padding:1.5rem;display:flex}@media (min-width:768px){.sidebar{width:280px;height:100vh;position:sticky;top:0}}.sidebar h3{color:var(--foreground);align-items:center;gap:.5rem;margin-bottom:1.5rem;font-size:1.25rem;font-weight:600;display:flex}.sidebar ul{flex-direction:column;gap:.5rem;padding-right:.5rem;list-style:none;display:flex;overflow-y:auto}.sidebar ul::-webkit-scrollbar{width:6px}.sidebar ul::-webkit-scrollbar-track{background:0 0}.sidebar ul::-webkit-scrollbar-thumb{background:#fff3;border-radius:10px}.topic-item{cursor:pointer;color:#cbd5e1;border:1px solid #0000;border-radius:.75rem;align-items:center;gap:.5rem;padding:.75rem 1rem;font-weight:500;transition:all .2s ease-out;display:flex}.topic-item:hover{color:#fff;background:#ffffff0d;transform:translate(4px)}.topic-item.active{color:var(--primary);background:#3b82f626;border-color:#3b82f64d;box-shadow:inset 0 0 10px #3b82f61a}.main-content{z-index:1;flex-direction:column;flex:1;align-items:center;padding:2rem 1rem;display:flex;position:relative}@media (min-width:768px){.main-content{padding:3rem}}.main-title{text-align:center;background:linear-gradient(90deg,#60a5fa,#a78bfa);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:2rem;font-size:1.75rem;font-weight:700;animation:.5s ease-out fadeIn}@media (min-width:768px){.main-title{font-size:2.5rem}}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.app-container{flex-direction:column;gap:1.5rem;width:100%;max-width:700px;animation:.6s cubic-bezier(.16,1,.3,1) slideUp;display:flex}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.controls{justify-content:flex-end;padding:0 .5rem;display:flex}.toggle-label{cursor:pointer;color:#94a3b8;border:1px solid var(--card-border);background:#0f172a66;border-radius:2rem;align-items:center;gap:.75rem;padding:.5rem 1rem;font-size:.9rem;transition:color .2s;display:flex}.toggle-label:hover{color:#fff;background:#0f172a99}.toggle-checkbox{appearance:none;cursor:pointer;background:#fff3;border-radius:18px;outline:none;width:32px;height:18px;transition:background .3s,box-shadow .3s;position:relative}.toggle-checkbox:after{content:"";background:#fff;border-radius:50%;width:14px;height:14px;transition:transform .3s cubic-bezier(.4,0,.2,1);position:absolute;top:2px;left:2px;box-shadow:0 2px 4px #0003}.toggle-checkbox:checked{background:var(--primary);box-shadow:0 0 10px #3b82f666}.toggle-checkbox:checked:after{transform:translate(14px)}.flashcard{background:var(--card-bg);-webkit-backdrop-filter:var(--glass-backdrop);border:1px solid var(--card-border);box-shadow:var(--glass-shadow);border-radius:1.5rem;flex-direction:column;justify-content:center;min-height:300px;padding:2rem;transition:transform .3s,box-shadow .3s;display:flex;position:relative;overflow:hidden}.flashcard:hover{transform:translateY(-2px);box-shadow:0 12px 40px #00000073}.flashcard:before{content:"";opacity:0;pointer-events:none;z-index:0;background:radial-gradient(circle,#3b82f61a 0%,#0000 70%);width:200%;height:200%;transition:opacity .5s;position:absolute;top:-50%;left:-50%}.flashcard:hover:before{opacity:1}.card-content{z-index:1;flex-direction:column;gap:2rem;display:flex;position:relative}.question-section,.answer-section{flex-direction:column;gap:.5rem;display:flex}.section-label{color:#94a3b8;text-transform:uppercase;letter-spacing:.05em;align-items:center;gap:.5rem;font-size:.85rem;font-weight:600;display:flex}.question-text{color:#fff;font-size:1.25rem;font-weight:500;line-height:1.6}.answer-text{color:#e2e8f0;border-top:1px dashed #ffffff26;padding-top:1.5rem;font-size:1.15rem;line-height:1.6;animation:.4s ease-out forwards fadeInAnswer}@keyframes fadeInAnswer{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.btn-show{color:var(--primary);cursor:pointer;background:#3b82f61a;border:1px solid #3b82f666;border-radius:1rem;align-self:flex-start;align-items:center;gap:.5rem;margin-top:1rem;padding:.75rem 1.5rem;font-weight:600;transition:all .2s;display:flex}.btn-show:hover{background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:0 4px 15px #3b82f64d}.btn-show:active{transform:translateY(0)}.nav{border:1px solid var(--card-border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0f172a99;border-radius:1rem;justify-content:space-between;align-items:center;padding:1rem;display:flex}.nav-btn{color:#fff;cursor:pointer;background:0 0;border:1px solid #ffffff1a;border-radius:.75rem;align-items:center;gap:.5rem;padding:.75rem 1.25rem;font-weight:500;transition:all .2s;display:flex}.nav-btn:hover:not(:disabled){background:#ffffff1a;border-color:#fff3}.nav-btn:disabled{opacity:.5;cursor:not-allowed}.progress{color:#cbd5e1;font-variant-numeric:tabular-nums;background:#0000004d;border-radius:2rem;padding:.5rem 1rem;font-weight:600}.loading{color:#94a3b8;flex-direction:column;justify-content:center;align-items:center;gap:1rem;height:300px;display:flex}.spinner{border:3px solid #ffffff1a;border-top-color:var(--primary);border-radius:50%;width:40px;height:40px;animation:1s ease-in-out infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;color:#94a3b8;background:var(--card-bg);border:1px solid var(--card-border);border-radius:1.5rem;padding:3rem}@media (max-width:767px){.sidebar{max-height:250px;padding:1rem}.sidebar ul{flex-direction:row;padding-bottom:.5rem;overflow:auto hidden}.topic-item{white-space:nowrap;padding:.5rem 1rem}.flashcard{min-height:250px;padding:1.5rem}.question-text{font-size:1.1rem}.answer-text{font-size:1.05rem}.nav-btn span{display:none}.nav-btn{padding:.75rem}}