:root{--bg-primary:#f9fafb;--bg-secondary:#fff;--bg-header:#fff;--bg-sidebar:#0f172a;--sidebar-text:#94a3b8;--sidebar-text-hover:#f1f5f9;--sidebar-active-bg:#0d94882e;--sidebar-active-text:#2dd4bf;--sidebar-section-title:#475569;--text-primary:#1e293b;--text-secondary:#64748b;--text-muted:#94a3b8;--border-color:#e8ecf0;--primary-color:#0d9488;--primary-hover:#0f766e;--q1-color:#ef4444}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.app-container{height:100vh;display:flex;overflow:hidden}.sidebar{background-color:var(--bg-sidebar);border-right:none;flex-direction:column;padding:0;display:flex;overflow-y:auto;box-shadow:4px 0 24px #0000002e}.sidebar-header{border-bottom:1px solid #ffffff12;justify-content:center;align-items:center;gap:12px;margin-bottom:8px;padding:28px 20px 20px;display:flex}.logo-icon{background-color:var(--primary-color);color:#fff;border-radius:6px;justify-content:center;align-items:center;width:32px;height:32px;font-size:1.2rem;font-weight:900;display:flex}.logo-text{color:#1e293b;font-size:1.1rem;font-weight:800}.logo-sub{color:#94a3b8;font-size:.7rem}.sidebar-section{margin-bottom:4px;padding:0 10px}.sidebar-section-title{color:var(--sidebar-section-title);text-transform:uppercase;letter-spacing:.1em;margin-bottom:2px;padding:14px 12px 6px;font-size:.65rem;font-weight:700}.nav-item{color:var(--sidebar-text);border-radius:8px;justify-content:space-between;align-items:center;gap:10px;margin-bottom:2px;padding:11px 14px;font-size:.95rem;font-weight:500;line-height:1.3;text-decoration:none;transition:all .18s;display:flex}.nav-item:hover{color:var(--sidebar-text-hover);background-color:#ffffff12;transform:translate(2px)}.nav-item.active{background:var(--sidebar-active-bg);color:var(--sidebar-active-text);box-shadow:inset 3px 0 0 var(--sidebar-active-text);font-weight:700}.header{border-bottom:1px solid var(--border-color);background-color:var(--bg-header);justify-content:space-between;align-items:center;height:64px;padding:0 32px;display:flex}.search-input{border:1px solid var(--border-color);background-color:#f1f5f9;border-radius:20px;width:320px;padding:10px 16px;font-size:.9rem}.content-area{flex:1;padding:16px 20px;overflow-y:auto}@media (width>=1200px){.content-area{padding:24px 32px}}.btn{border:1px solid var(--border-color);cursor:pointer;background:#fff;border-radius:6px;padding:8px 16px;font-size:.85rem;font-weight:600}.btn-primary{background:var(--primary-color);color:#fff;border:none}.task-card:hover{border-color:var(--primary-color);box-shadow:0 4px 12px #00000014}.main-wrapper{flex-direction:column;flex:1;min-width:0;display:flex;overflow:hidden}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background-color:#0f172a66;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal-content{background:#fff;border-radius:12px;flex-direction:column;width:100%;max-height:94vh;padding:24px;display:flex;overflow-y:auto;box-shadow:0 25px 50px -12px #00000040}