:root{--font-family:"Nunito",system-ui,sans-serif;--font-heading:"Outfit",system-ui,sans-serif;--bg-color:#faf9f6;--card-bg:#fff;--sidebar-bg:#faf9f6d9;--header-bg:#faf9f6d9;--text-primary:#2d2a26;--text-secondary:#57534e;--accent-color:#8b5cf6;--accent-hover:#7c3aed;--danger-color:#f43f5e;--sidebar-border:#2d2a260d;--card-border:#2d2a260d;--card-hover-border:#8b5cf64d;--nav-hover:#2d2a2608;--nav-active:#8b5cf61a;--sidebar-width:260px;--header-height:70px;--shadow-sm:0 2px 8px -2px #2d2a260d;--shadow-md:0 8px 24px -4px #2d2a2614;--shadow-lg:0 20px 40px -8px #2d2a261f;--radius-md:12px;--radius-lg:20px;--blur-strength:20px}body.dark-mode{--bg-color:#111827;--card-bg:#1f2937b3;--sidebar-bg:#1f2937b3;--header-bg:#1f2937b3;--text-primary:#f9fafb;--text-secondary:#9ca3af;--accent-color:#60a5fa;--accent-hover:#3b82f6;--sidebar-border:#37415180;--card-border:#37415180;--card-hover-border:#4b5563;--nav-hover:#374151cc;--nav-active:#1e3a8a80;--shadow-sm:0 1px 2px 0 #0000004d;--shadow-md:0 4px 6px -1px #0006}body.read-mode{--bg-color:#fdf6e3;--card-bg:#fffef8e6;--sidebar-bg:#fdf6e3e6;--header-bg:#fdf6e3e6;--text-primary:#433422;--text-secondary:#5c4b37;--accent-color:#d33682;--accent-hover:#b58900;--sidebar-border:#eee8d580;--card-border:#eee8d580;--card-hover-border:#d3cbb7;--nav-hover:#eee8d5cc;--nav-active:#fdf6e3}*{box-sizing:border-box;margin:0;padding:0}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.01em;font-weight:600}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-primary);transition:background-color .3s,color .3s;overflow:hidden}#bg-canvas{z-index:-1;pointer-events:none;width:100%;height:100%;position:fixed;top:0;left:0}#app{width:100vw;height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background-color:var(--sidebar-bg);white-space:nowrap;z-index:10;border-right:none;flex-direction:column;padding:1.5rem;transition:width .3s,padding .3s,background-color .3s,border-color .3s;display:flex;position:relative;overflow:hidden;box-shadow:1px 0 20px #00000005}.sidebar.collapsed{width:80px;padding:1.5rem .75rem}.sidebar-header{justify-content:space-between;align-items:center;margin-bottom:2rem;display:flex}.logo{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.02em;align-items:center;gap:.5rem;font-size:1.75rem;font-weight:700;display:flex;overflow:hidden}.user-avatar{object-fit:cover;border:2px solid var(--accent-color);border-radius:50%;width:32px;height:32px}.sidebar.collapsed .logo-text{display:none}.sidebar-toggle{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;font-size:1.2rem;transition:background-color .2s;display:flex}.sidebar-toggle:hover{color:var(--accent-color);background-color:#f3f4f6}.sidebar.collapsed .sidebar-toggle{position:absolute;top:1.5rem;left:50%;transform:translate(-50%)}.sidebar.collapsed .logo{display:none}.nav-links{scrollbar-width:thin;flex-direction:column;flex:1;gap:.5rem;min-height:0;margin-top:1rem;list-style:none;display:flex;overflow-y:auto}.nav-item{border-radius:var(--radius-md);cursor:pointer;color:var(--text-secondary);align-items:center;gap:.75rem;padding:.75rem 1rem;font-weight:500;transition:background-color .2s,color .2s;display:flex;overflow:hidden}.sidebar.collapsed .nav-item{justify-content:center;padding:.75rem}.sidebar.collapsed .nav-text{display:none}.sidebar.collapsed .nav-item{position:relative}.sidebar.collapsed .nav-item:hover:after{content:attr(title);background-color:var(--text-primary);color:var(--card-bg);white-space:nowrap;z-index:100;pointer-events:none;opacity:0;visibility:hidden;border-radius:6px;padding:.5rem .75rem;font-size:.85rem;font-weight:500;transition:opacity .2s,transform .2s,visibility .2s;position:absolute;top:50%;left:calc(100% + 10px);transform:translateY(-50%)translate(-5px);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.sidebar.collapsed .nav-item:hover:before{content:"";border-style:solid;border-width:6px;border-color:transparent var(--text-primary)transparent transparent;z-index:100;pointer-events:none;opacity:0;visibility:hidden;transition:opacity .2s,transform .2s,visibility .2s;position:absolute;top:50%;left:calc(100% + 4px);transform:translateY(-50%)translate(-5px)}.sidebar.collapsed .nav-item:hover:after,.sidebar.collapsed .nav-item:hover:before{opacity:1;visibility:visible;transform:translateY(-50%)translate(0)}.nav-item:hover{background-color:var(--nav-hover);color:var(--text-primary)}.nav-item.active{background-color:var(--nav-active);color:var(--accent-color)}.auth-section{border-top:1px solid var(--sidebar-border);margin-top:auto;padding-top:1rem;overflow:hidden}.sidebar.collapsed .btn-text{display:none}.sidebar.collapsed .btn-icon{display:inline-block!important}.sidebar.collapsed .btn{justify-content:center;padding:.75rem;display:flex}.main-content{flex-direction:column;flex:1;height:100%;display:flex;overflow:hidden}.header{height:var(--header-height);background-color:var(--header-bg);-webkit-backdrop-filter:blur(var(--blur-strength));border-bottom:1px solid var(--sidebar-border);z-index:5;justify-content:space-between;align-items:center;gap:1rem;padding:0 2rem;transition:background-color .3s,border-color .3s;display:flex;position:sticky;top:0}.header-actions{align-items:center;gap:.5rem;display:flex}.header-btn{border-radius:var(--radius-full);border:1px solid var(--card-border);background:var(--card-bg);color:var(--text-primary);cursor:pointer;box-shadow:var(--shadow-sm);align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.9rem;font-weight:500;transition:all .2s;display:flex}.header-btn:hover{background:var(--nav-hover);box-shadow:var(--shadow-md);border-color:var(--primary-color);color:var(--primary-color);transform:translateY(-1px)}.header-btn i{width:16px;height:16px}.theme-toggle{cursor:pointer;background:0 0;border:none;border-radius:50%;outline:none;padding:.5rem;transition:background-color .2s}.theme-toggle:hover{background-color:var(--nav-hover)}.search-container{flex:1;align-items:center;max-width:400px;display:flex;position:relative}.search-icon{color:var(--text-secondary);pointer-events:none;width:18px;height:18px;position:absolute;left:12px}#search-input{border:1px solid var(--sidebar-border);background-color:var(--bg-color);width:100%;color:var(--text-primary);border-radius:20px;padding:.5rem 1rem .5rem 2.5rem;font-size:.9rem;transition:border-color .2s,box-shadow .2s}#search-input:focus{border-color:var(--accent-color);outline:none;box-shadow:0 0 0 3px #3b82f61a}.sort-container{position:relative}#sort-select{border:1px solid var(--sidebar-border);background-color:var(--bg-color);color:var(--text-primary);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg 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p{color:var(--text-secondary);-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;font-size:.875rem;display:-webkit-box;overflow:hidden}.fab{background-color:var(--accent-color);color:#fff;width:56px;height:56px;box-shadow:var(--shadow-lg);cursor:pointer;z-index:100;border:none;border-radius:50%;justify-content:center;align-items:center;font-size:1.5rem;transition:transform .2s,background-color .2s;display:flex;position:fixed;bottom:2rem;right:2rem}.fab:hover{background-color:var(--accent-hover);transform:scale(1.05)}.hidden{display:none!important}.hidden-desktop{display:none}.modal-overlay{z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background-color:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background-color:var(--card-bg);border-radius:var(--radius-lg);width:100%;max-width:500px;box-shadow:var(--shadow-lg);padding:2rem}.modal-header{justify-content:space-between;align-items:center;margin-bottom:1.5rem;display:flex}.modal-title{font-size:1.25rem;font-weight:600}.close-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;font-size:1.5rem}#delete-card-title-confirm{color:var(--danger-color);-webkit-user-select:all;user-select:all;font-weight:800}.form-group{margin-bottom:1rem}.form-group label{margin-bottom:.5rem;font-size:.875rem;font-weight:500;display:block}.form-group 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4rem;overflow-y:auto}.hero-section{margin-top:2rem;margin-bottom:3rem}.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1rem}.features-grid{grid-template-columns:1fr;gap:1.5rem}.feature-card{padding:1.25rem}.landing-footer{margin-top:4rem;position:relative;bottom:auto}.landing-nav{width:auto;top:1.5rem;right:1.5rem}.landing-nav-btn{padding:.5rem 1rem;font-size:.9rem}.hidden-desktop{display:block!important}.sidebar{z-index:100;width:280px;height:100%;box-shadow:var(--shadow-lg);position:fixed;left:-100%}.sidebar.open{left:0}.sidebar.open:before{content:"";-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:90;background:#00000080;width:100vw;height:100%;position:fixed;top:0;left:280px}.header{gap:.5rem;padding:0 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cubic-bezier(.68,-.55,.27,1.55);display:flex;transform:translate(120%)}.toast.show{transform:translate(0)}.toast.success{border-left:4px solid var(--accent-color)}.toast.error{border-left:4px solid var(--danger-color)}.toast-icon{justify-content:center;align-items:center;display:flex}.toast.success .toast-icon{color:var(--accent-color)}.toast.error .toast-icon{color:var(--danger-color)}.landing-container{text-align:center;color:var(--text-primary);flex-direction:column;grid-column:1/-1;justify-content:center;align-items:center;height:100vh;min-height:600px;padding:2rem;display:flex;position:relative;overflow:hidden}.hero-blob{filter:blur(80px);opacity:.4;z-index:-1;border-radius:50%;animation:10s ease-in-out infinite float;position:absolute}.blob-1{background:var(--accent-color);width:400px;height:400px;animation-delay:0s;top:-100px;left:-100px}.blob-2{background:var(--danger-color);width:300px;height:300px;animation-delay:-5s;bottom:0;right:-50px}.blob-3{opacity:.3;background:#fbbf24;width:200px;height:200px;animation-delay:-2s;top:40%;left:60%}.hero-section{z-index:1;max-width:800px;margin-top:-2rem;margin-bottom:3rem;position:relative}.hero-title{font-family:var(--font-heading);letter-spacing:-.03em;background:linear-gradient(135deg,var(--text-primary)30%,var(--accent-color)100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:1rem;font-size:3.5rem;font-weight:800;line-height:1.1;animation:.8s ease-out forwards fadeUp}.hero-subtitle{color:var(--text-secondary);opacity:0;max-width:500px;margin-bottom:2rem;margin-left:auto;margin-right:auto;font-size:1.1rem;line-height:1.5;animation:.8s ease-out .2s forwards fadeUp}.cta-button{background:var(--text-primary);color:var(--bg-color);cursor:pointer;opacity:0;border:none;border-radius:50px;align-items:center;gap:.5rem;padding:1rem 2rem;font-size:1rem;font-weight:600;transition:transform .3s cubic-bezier(.34,1.56,.64,1),box-shadow .3s;animation:.8s ease-out .4s forwards fadeUp;display:inline-flex;box-shadow:0 10px 25px -5px #0000001a}.cta-button:hover{transform:translateY(-4px)scale(1.02);box-shadow:0 20px 35px -5px #00000026}.features-grid{z-index:1;grid-template-columns:repeat(3,1fr);gap:1.5rem;width:100%;max-width:900px;display:grid;position:relative}.feature-card{-webkit-backdrop-filter:blur(12px);text-align:left;opacity:0;background:#fff9;border:1px solid #fff6;border-radius:20px;padding:1.5rem;transition:all .4s cubic-bezier(.25,.8,.25,1);animation:.8s ease-out forwards fadeUp;box-shadow:0 4px 20px -5px #0000000d}.feature-card:first-child{animation-delay:.6s}.feature-card:nth-child(2){animation-delay:.7s}.feature-card:nth-child(3){animation-delay:.8s}.feature-card:hover{background:#fffc;border-color:#fffc;transform:translateY(-5px);box-shadow:0 20px 40px -10px #0000001a}.feature-icon{color:var(--accent-color);background:#8b5cf61a;border-radius:12px;justify-content:center;align-items:center;width:40px;height:40px;margin-bottom:1rem;font-size:1.2rem;display:flex}.feature-title{font-family:var(--font-heading);color:var(--text-primary);margin-bottom:.5rem;font-size:1.1rem;font-weight:700}.feature-desc{color:var(--text-secondary);font-size:.9rem;line-height:1.4}.landing-footer{color:var(--text-secondary);opacity:.6;margin-top:3rem;font-size:.8rem;animation:.8s ease-out 1s forwards fadeUp;position:absolute;bottom:1rem}@keyframes float{0%{transform:translate(0)rotate(0)}33%{transform:translate(30px,-50px)rotate(10deg)}66%{transform:translate(-20px,20px)rotate(-5deg)}to{transform:translate(0)rotate(0)}}@keyframes fadeUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}body.dark-mode .feature-card{background:#1f293799;border-color:#ffffff0d}body.dark-mode .feature-card:hover{background:#1f2937cc}body.dark-mode .cta-button{background:var(--accent-color);color:#fff}.landing-nav{z-index:100;gap:1rem;animation:.5s ease-out fadeIn;display:flex;position:absolute;top:2rem;right:2rem}.landing-nav-btn{-webkit-backdrop-filter:blur(10px);cursor:pointer;color:var(--text-primary);font-weight:600;font-family:var(--font-family);background:#ffffff80;border:1px solid #ffffff4d;border-radius:50px;align-items:center;gap:.5rem;padding:.75rem 1.5rem;transition:all .2s;display:flex}.landing-nav-btn:hover{background:#fffc;transform:translateY(-2px);box-shadow:0 4px 12px #0000000d}body.dark-mode .landing-nav-btn{color:var(--text-primary);background:#1f293780;border-color:#ffffff1a}body.dark-mode .landing-nav-btn:hover{background:#1f2937cc}.graph-wrapper{background:var(--card-bg);border-radius:var(--radius-lg);border:1px solid var(--card-border);width:100%;height:600px;position:relative;overflow:hidden}.graph-controls-floating{z-index:10;flex-direction:column;gap:.5rem;display:flex;position:absolute;bottom:20px;right:20px}.graph-btn{border:1px solid var(--card-border);-webkit-backdrop-filter:blur(10px);cursor:pointer;width:40px;height:40px;color:var(--text-primary);box-shadow:var(--shadow-sm);background:#fffc;border-radius:50%;justify-content:center;align-items:center;transition:all .2s;display:flex}.graph-btn:hover{box-shadow:var(--shadow-md);background:var(--card-bg);transform:translateY(-2px)}.graph-btn:active{transform:translateY(0)}[data-theme=dark] .graph-btn{background:#1e1e1ecc}.contact-icon-link{transition:transform .2s,filter .2s}.contact-icon-link:hover{filter:drop-shadow(0 4px 6px #0003);transform:scale(1.2)}@media (max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr);max-width:700px}}@media (max-width:768px){.landing-container{justify-content:flex-start;height:auto;min-height:100vh;padding:6rem 1.5rem 4rem;overflow-y:auto}.hero-section{margin-top:2rem;margin-bottom:3rem}.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1rem}.features-grid{grid-template-columns:1fr;gap:1.5rem}.feature-card{padding:1.25rem}.landing-footer{margin-top:4rem;position:relative;bottom:auto}.landing-nav{width:auto;top:1.5rem;right:1.5rem}.landing-nav-btn{padding:.5rem 1rem;font-size:.9rem}}