:root{--bg-color: #f9fafb;--surface: #ffffff;--surface-hover: #f3f4f6;--border: #e5e7eb;--primary: #0f172a;--primary-glow: transparent;--secondary: #2563eb;--success: #10b981;--text-main: #111827;--text-muted: #6b7280;--radius: 16px;--transition: .2s ease-in-out}*{box-sizing:border-box}body{margin:0;font-family:DM Sans,Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-color);color:var(--text-main);min-height:100vh;-webkit-font-smoothing:antialiased}.ambient-bg{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:-1;background:radial-gradient(circle at 15% 50%,rgba(59,130,246,.08) 0%,transparent 40%),radial-gradient(circle at 85% 30%,rgba(99,102,241,.08) 0%,transparent 40%);pointer-events:none}header{background:#ffffffd9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:1rem 1.5rem;position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.3);box-shadow:0 4px 30px #00000008}nav{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.logo{font-weight:800;font-size:1.25rem;color:var(--text-main);display:flex;align-items:center;gap:.5rem;letter-spacing:-.03em;font-family:DM Sans,Inter,system-ui,-apple-system,sans-serif}nav a{color:var(--text-muted);text-decoration:none;font-size:.9375rem;font-weight:500;transition:all .2s ease;font-family:DM Sans,Inter,system-ui,-apple-system,sans-serif;display:inline-flex;align-items:center;gap:.35rem;padding:.35rem .75rem;border-radius:999px;background:transparent}nav a svg{width:16px;height:16px;transition:transform .2s ease}nav a:hover{color:var(--text-main);background:var(--surface-hover)}nav a:hover svg{transform:translate(-3px)}#app{max-width:600px;margin:0 auto;padding:1.5rem 1.5rem 5rem}h1,h2,h3,h4,.outfit{font-family:Outfit,sans-serif;margin:0}.title{font-size:2.25rem;font-weight:700;margin-bottom:.5rem;text-align:center;line-height:1.2}.text-gradient{color:var(--primary)}.subtitle{color:var(--text-muted);text-align:center;margin-bottom:2rem;font-size:.95rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:all var(--transition);margin-bottom:1rem;box-shadow:0 1px 3px #0000000d}.card.interactive:hover{background:var(--surface-hover);border-color:#d1d5db;transform:translateY(-2px);box-shadow:0 4px 12px #0000000d;cursor:pointer}.card.interactive:active{transform:translateY(0);transition:all .1s}.segmented-control{display:flex;background:#f3f4f6;border:1px solid var(--border);border-radius:999px;padding:.35rem;margin-bottom:2rem;position:relative}.segmented-control button{flex:1;background:transparent;border:none;color:var(--text-muted);padding:.75rem;border-radius:999px;font-family:Outfit,sans-serif;font-weight:600;font-size:1rem;cursor:pointer;transition:var(--transition);z-index:1}.segmented-control button.active{color:var(--text-main);background:var(--surface);box-shadow:0 2px 8px #0000000d}.glass-btn{background:var(--surface);border:1px solid var(--border);color:var(--text-main);padding:.75rem 1.5rem;border-radius:999px;font-family:Inter,sans-serif;font-weight:600;cursor:pointer;transition:all var(--transition);display:inline-flex;align-items:center;justify-content:center;gap:.5rem;box-shadow:0 1px 2px #00000005}.glass-btn:hover{background:var(--surface-hover);border-color:#d1d5db}.glass-btn.primary{background:var(--primary);color:#fff;border-color:transparent}.glass-btn.primary:hover{background:#1e293b;transform:translateY(-1px)}.flex-between{display:flex;justify-content:space-between;align-items:center}.flex-center{display:flex;justify-content:center;align-items:center}.stack-sm{display:flex;flex-direction:column;gap:.5rem}.stack{display:flex;flex-direction:column;gap:1rem}.badge{background:#10b98126;color:var(--success);border:1px solid rgba(16,185,129,.3);padding:.25rem .5rem;border-radius:6px;font-size:.75rem;font-weight:600}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.icon-btn{background:var(--surface);border:1px solid var(--border);color:var(--text-main);width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease;padding:0}.icon-btn:hover{background:var(--surface-hover);border-color:#d1d5db;transform:translateY(-1px)}.icon-btn.add-btn{background:var(--primary);color:#fff;border-color:transparent}.icon-btn.add-btn:hover{background:#1e293b;transform:scale(1.05)}#toast-container{position:fixed;bottom:2rem;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:.5rem;z-index:1000;pointer-events:none}.toast{background:var(--primary);color:#fff;padding:.75rem 1.25rem;border-radius:999px;font-family:Inter,sans-serif;font-size:.9rem;font-weight:500;box-shadow:0 4px 12px #00000026;animation:toastIn .3s cubic-bezier(.4,0,.2,1) forwards;pointer-events:auto}.toast.fade-out{animation:toastOut .3s cubic-bezier(.4,0,.2,1) forwards}@keyframes toastIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes toastOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(20px)}}