:root{--color-scheme: light;--font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;--bg: #faf8f5;--bg-card: #ffffff;--bg-card-hover: #fefcfa;--bg-nav: #fff9f0;--bg-input: #f5f2ee;--bg-badge: #fff3e0;--text-primary: #2d2016;--text-secondary: #6b5d4f;--text-muted: #9c8e7e;--text-inverse: #ffffff;--accent: #d97706;--accent-hover: #b45309;--accent-light: #fef3c7;--accent-soft: #fde68a;--green: #16a34a;--green-light: #dcfce7;--blue: #2563eb;--blue-light: #dbeafe;--red: #dc2626;--red-light: #fee2e2;--purple: #7c3aed;--purple-light: #ede9fe;--teal: #0d9488;--teal-light: #ccfbf1;--border: #e8e0d6;--border-light: #f0ebe4;--shadow-sm: 0 1px 2px rgba(45,32,22,.05);--shadow-md: 0 4px 12px rgba(45,32,22,.08);--shadow-lg: 0 8px 24px rgba(45,32,22,.12);--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-full: 9999px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;font-family:var(--font-sans);background:var(--bg);color:var(--text-primary);line-height:1.6}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--bg-nav);border-right:1px solid var(--border);padding:1.5rem 1rem;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto;flex-shrink:0}.sidebar-brand{display:flex;align-items:center;gap:.6rem;padding:0 .5rem;margin-bottom:1.75rem}.sidebar-brand-icon{font-size:1.75rem;line-height:1}.sidebar-brand h1{font-size:1.35rem;font-weight:800;letter-spacing:-.03em;color:var(--accent)}.sidebar-brand span{display:block;font-size:.7rem;color:var(--text-muted);font-weight:500;letter-spacing:.02em;margin-top:-2px}.sidebar-section-label{font-size:.65rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);padding:0 .5rem;margin:1.25rem 0 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.75rem;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.88rem;font-family:var(--font-sans);color:var(--text-primary);background:var(--bg-card);outline:none;transition:border-color .15s}.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.form-textarea{resize:vertical;min-height:80px}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.75rem;margin-bottom:2rem}.stat-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:1rem 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ease}.item-card:hover{border-color:var(--border);box-shadow:var(--shadow-md);transform:translateY(-2px)}.item-image{width:100%;height:160px;display:grid;place-items:center;font-size:3rem;background:var(--bg-input)}.item-card-body{padding:1rem}.item-price{font-size:1.15rem;font-weight:800;color:var(--green)}.item-title{font-size:.92rem;font-weight:600;margin:.25rem 0}.item-seller{font-size:.78rem;color:var(--text-muted)}.item-card-footer{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;border-top:1px solid var(--border-light)}.hero-banner{background:linear-gradient(135deg,#fff7ed,#fef3c7,#fde68a);border:1px solid #fde68a;border-radius:var(--radius-lg);padding:2rem 2.25rem;margin-bottom:2rem;position:relative;overflow:hidden}.hero-banner:after{content:"";position:absolute;right:-20px;bottom:-20px;width:180px;height:180px;background:radial-gradient(circle,rgba(217,119,6,.12) 0%,transparent 70%);border-radius:50%}.hero-banner h2{font-size:1.5rem;font-weight:800;color:var(--accent-hover);margin-bottom:.35rem}.hero-banner p{color:var(--text-secondary);font-size:.92rem;max-width:480px}.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-muted)}.empty-state .empty-icon{font-size:3rem;margin-bottom:.75rem}.empty-state p{font-size:.9rem}.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--text-primary);color:var(--text-inverse);padding:.75rem 1.25rem;border-radius:var(--radius-sm);font-size:.85rem;font-weight:500;box-shadow:var(--shadow-lg);z-index:200;animation:slideUp .25s ease,fadeOut .25s ease 2.5s forwards}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}@media(max-width:768px){.sidebar{display:none}.main-content{padding:1.25rem}.marketplace-grid{grid-template-columns:1fr}.hero-banner{padding:1.5rem}.search-bar{width:100%}.page-actions{flex-direction:column;align-items:stretch}}