:root{--bg-color:#f8f9fa;--text-color:#111827;--surface-color:#fff;--border-color:#e5e7eb;--primary-color:#262626;--primary-hover:#000;--sidebar-bg:transparent;--glass-bg:#fff9;--glass-border:#fff9;--shadow:0 8px 32px 0 #0000000d;--progress-bg:#e5e7eb}[data-theme=dark]{--bg-color:#050505;--text-color:#f3f4f6;--surface-color:#14141499;--border-color:#ffffff1a;--primary-color:#e5e5e5;--primary-hover:#fff;--sidebar-bg:transparent;--glass-bg:#14141499;--glass-border:#ffffff14;--shadow:0 8px 32px 0 #0006;--progress-bg:#333}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;line-height:1.5;transition:background-color .3s,color .3s}h1,h2,h3,h4,h5,h6{margin-bottom:.5rem;font-weight:600;line-height:1.2}p{margin-bottom:1rem}.glass-panel{background:var(--glass-bg);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);box-shadow:var(--shadow);border-radius:20px}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:.5rem;padding:.5rem 1rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary-color);color:#fff}[data-theme=dark] .btn-primary{color:#000!important}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px)}.btn-outline{border:1px solid var(--border-color);color:var(--text-color);background-color:#0000}.btn-outline:hover{background-color:var(--surface-color);border-color:var(--primary-color)}.input-field{border:1px solid var(--border-color);background-color:var(--surface-color);width:100%;color:var(--text-color);border-radius:8px;outline:none;padding:.75rem 1rem;transition:border-color .2s}.input-field:focus{border-color:var(--primary-color);box-shadow:0 0 0 2px #80808033}.app-container{min-height:100vh;display:flex}.sidebar{background-color:var(--sidebar-bg);border-right:1px solid var(--border-color);flex-direction:column;align-items:center;width:80px;padding-top:1rem;transition:width .3s;display:flex}.main-content{flex-direction:column;flex:1;padding:1.5rem;display:flex;overflow-y:auto}.sidebar-logo{text-align:center;border-bottom:1px solid var(--glass-border);width:100%;margin-bottom:1rem;padding:1.5rem 0}.sidebar-nav{flex-direction:column;flex:1;align-items:center;gap:1.5rem;width:100%;padding:1rem 0;display:flex}.sidebar-footer{border-top:1px solid var(--glass-border);flex-direction:column;align-items:center;gap:1.5rem;width:100%;padding:1.5rem 0;display:flex}.sidebar-btn{border-radius:50%;justify-content:center;padding:.75rem}.main-panel{min-height:calc(100vh - 4rem);padding:2rem}@media (width<=768px){.app-container{flex-direction:column}.sidebar{border-right:none;border-bottom:1px solid var(--border-color);flex-direction:row;justify-content:space-between;width:100%;padding:.5rem 1rem}.sidebar-logo{border-bottom:none;align-items:center;width:auto;margin-bottom:0;padding:0;display:flex}.sidebar-nav{flex-direction:row;justify-content:center;gap:.5rem;width:auto;padding:0}.sidebar-footer{border-top:none;flex-direction:row;gap:.5rem;width:auto;padding:0}.main-content{padding:.5rem}.main-panel{min-height:calc(100vh - 2rem);padding:1rem}.glass-panel{padding:1rem!important}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:.4s forwards fadeIn}.progress-bar-container{background-color:var(--progress-bg);border-radius:4px;width:100%;height:6px;margin-top:.5rem;overflow:hidden}.progress-bar-fill{background-color:var(--primary-color);border-radius:4px;height:100%;transition:width .4s cubic-bezier(.4,0,.2,1)}.overall-progress-container{background-color:var(--progress-bg);border-radius:6px;width:100%;height:12px;margin-top:1rem;margin-bottom:2rem;overflow:hidden}.overall-progress-fill{background-color:var(--primary-color);border-radius:6px;height:100%;transition:width .8s cubic-bezier(.4,0,.2,1)}.class-item-btn{transition:all .3s}.class-item-btn:hover{box-shadow:var(--shadow);transform:translate(4px);background-color:var(--surface-color)!important}.class-row-interactive{transition:all .2s cubic-bezier(.4,0,.2,1)}.class-row-interactive:hover{transform:translate(4px);background-color:#80808014!important}.stats-grid-middle{grid-template-columns:1.8fr 1.2fr;gap:2rem;margin-bottom:3rem;display:grid}.stats-grid-bottom{grid-template-columns:1.2fr 1.8fr;gap:2rem;margin-bottom:3rem;display:grid}@media (width<=968px){.stats-grid-middle,.stats-grid-bottom{grid-template-columns:1fr}}