*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-primary:#0f1117;
  --bg-secondary:#161822;
  --bg-card:#1c1f2e;
  --bg-input:#232636;
  --border:#2a2d3e;
  --border-focus:#4f6ef7;
  --text-primary:#e8eaed;
  --text-secondary:#9aa0b2;
  --text-muted:#6b7185;
  --accent:#4f6ef7;
  --accent-hover:#6b83f9;
  --green:#22c55e;
  --green-bg:rgba(34,197,94,.12);
  --red:#ef4444;
  --red-bg:rgba(239,68,68,.12);
  --amazon:#ff9900;
  --flipkart:#2874f0;
  --radius:10px;
  --radius-sm:6px;
  --shadow:0 4px 24px rgba(0,0,0,.35);
  --font:'Inter',system-ui,-apple-system,sans-serif;
}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-hover)}
img{max-width:100%;height:auto}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:14px 0;position:sticky;top:0;z-index:100;backdrop-filter:blur(10px)}
.site-header .container{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:8px;color:var(--text-primary);font-weight:700;font-size:1.15rem}
.logo svg{color:var(--accent)}
.logo:hover{color:var(--text-primary)}
.site-nav{display:flex;align-items:center;gap:16px}
.nav-stat{font-size:.8rem;color:var(--text-muted);background:var(--bg-card);padding:4px 12px;border-radius:20px}

/* Hero */
.hero{padding:80px 0 60px;text-align:center;background:linear-gradient(180deg,var(--bg-secondary) 0%,var(--bg-primary) 100%)}
.hero h1{font-size:2.4rem;font-weight:700;margin-bottom:12px;background:linear-gradient(135deg,#fff 0%,#9aa0b2 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{color:var(--text-secondary);font-size:1.05rem;margin-bottom:36px}

/* Search */
.search-form{max-width:680px;margin:0 auto}
.search-input-wrap{display:flex;align-items:center;background:var(--bg-input);border:2px solid var(--border);border-radius:var(--radius);padding:4px 4px 4px 16px;transition:border-color .2s}
.search-input-wrap:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 3px rgba(79,110,247,.15)}
.search-icon{color:var(--text-muted);flex-shrink:0}
.search-input-wrap input{flex:1;background:none;border:none;color:var(--text-primary);font-size:1rem;padding:12px 12px;outline:none}
.search-input-wrap input::placeholder{color:var(--text-muted)}
.btn{display:inline-flex;align-items:center;gap:6px;padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:.9rem;border:none;cursor:pointer;transition:all .2s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border);padding:10px 20px}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.search-error{color:var(--red);font-size:.88rem;margin-top:10px;text-align:left;padding:0 4px}

.supported-platforms{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:20px;font-size:.82rem;color:var(--text-muted)}
.platform-badge{padding:3px 10px;border-radius:20px;font-weight:500;font-size:.78rem}
.platform-badge.amazon{background:rgba(255,153,0,.12);color:var(--amazon)}
.platform-badge.flipkart{background:rgba(40,116,240,.12);color:var(--flipkart)}

/* Product grid */
.recent-section,.features-section{padding:60px 0}
.section-title{font-size:1.35rem;font-weight:600;margin-bottom:32px;text-align:center;color:var(--text-primary)}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .2s,border-color .2s;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-3px);border-color:var(--accent);color:var(--text-primary)}
.product-card-img{height:180px;background:var(--bg-input);display:flex;align-items:center;justify-content:center;overflow:hidden}
.product-card-img img{width:100%;height:100%;object-fit:contain;padding:12px}
.product-card-placeholder{color:var(--text-muted)}
.product-card-body{padding:16px;flex:1;display:flex;flex-direction:column}
.product-card-platform{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;display:inline-block;padding:2px 8px;border-radius:4px}
.product-card-platform.amazon{color:var(--amazon);background:rgba(255,153,0,.1)}
.product-card-platform.flipkart{color:var(--flipkart);background:rgba(40,116,240,.1)}
.product-card-title{font-size:.88rem;font-weight:500;color:var(--text-primary);line-height:1.4;margin-bottom:auto;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-card-price{margin-top:12px;display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.current-price{font-size:1.1rem;font-weight:700;color:var(--green)}
.lowest-price{font-size:.78rem;color:var(--text-muted)}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;text-align:center}
.feature-icon{width:56px;height:56px;margin:0 auto 16px;background:rgba(79,110,247,.1);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--accent)}
.feature-card h3{font-size:1rem;font-weight:600;margin-bottom:8px}
.feature-card p{font-size:.88rem;color:var(--text-secondary);line-height:1.5}

/* Product detail page */
.product-detail{padding:32px 0 60px}
.breadcrumb{font-size:.82rem;color:var(--text-muted);margin-bottom:24px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--text-muted);opacity:.5}
.product-header{display:grid;grid-template-columns:280px 1fr;gap:36px;margin-bottom:40px;align-items:start}
.product-image-wrap{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;align-items:center;justify-content:center;min-height:280px}
.product-image{max-height:260px;object-fit:contain}
.product-image-placeholder{color:var(--text-muted)}
.product-info{display:flex;flex-direction:column;gap:12px}
.product-platform-badge{display:inline-block;width:fit-content;padding:4px 12px;border-radius:4px;font-size:.76rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.product-platform-badge.amazon{color:var(--amazon);background:rgba(255,153,0,.1)}
.product-platform-badge.flipkart{color:var(--flipkart);background:rgba(40,116,240,.1)}
.product-title{font-size:1.35rem;font-weight:600;line-height:1.4}
.price-display{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.price-current{font-size:1.8rem;font-weight:700;color:var(--green)}
.price-mrp{font-size:1rem;color:var(--text-muted);text-decoration:line-through}
.price-discount{font-size:.88rem;font-weight:600;color:var(--green);background:var(--green-bg);padding:2px 8px;border-radius:4px}
.price-change{font-size:.85rem;font-weight:500;padding:2px 8px;border-radius:4px}
.price-down{color:var(--green);background:var(--green-bg)}
.price-up{color:var(--red);background:var(--red-bg)}
.price-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:8px}
.stat-card{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 12px;text-align:center}
.stat-label{display:block;font-size:.72rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}
.stat-value{display:block;font-size:1.05rem;font-weight:700;color:var(--text-primary)}
.stat-lowest .stat-value{color:var(--green)}
.stat-highest .stat-value{color:var(--red)}
.last-updated{font-size:.82rem;color:var(--text-muted)}

/* Chart */
.chart-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:32px}
.chart-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:12px}
.chart-header h2{font-size:1.1rem;font-weight:600}
.chart-period-tabs{display:flex;gap:4px}
.period-tab{background:var(--bg-input);border:1px solid var(--border);color:var(--text-secondary);padding:6px 14px;border-radius:var(--radius-sm);font-size:.8rem;font-weight:500;cursor:pointer;transition:all .2s}
.period-tab:hover{border-color:var(--accent);color:var(--accent)}
.period-tab.active{background:var(--accent);border-color:var(--accent);color:#fff}
.chart-wrap{position:relative;height:300px}
.chart-wrap canvas{width:100%!important}

/* Price table */
.history-table-section{margin-top:32px}
.history-table-section h2{font-size:1.1rem;font-weight:600;margin-bottom:16px}
.table-responsive{overflow-x:auto;-webkit-overflow-scrolling:touch}
.price-table{width:100%;border-collapse:collapse;font-size:.88rem}
.price-table thead th{text-align:left;padding:12px 16px;background:var(--bg-card);border-bottom:2px solid var(--border);color:var(--text-muted);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.5px}
.price-table tbody td{padding:10px 16px;border-bottom:1px solid var(--border)}
.price-table tbody tr:hover{background:var(--bg-card)}
.change-indicator{font-size:.82rem;font-weight:500;padding:2px 8px;border-radius:4px}
.change-down{color:var(--green);background:var(--green-bg)}
.change-up{color:var(--red);background:var(--red-bg)}
.change-same{color:var(--text-muted)}

/* Error page */
.error-page{text-align:center;padding:100px 20px}
.error-page h1{font-size:4rem;font-weight:700;color:var(--accent);margin-bottom:16px}
.error-page p{color:var(--text-secondary);margin-bottom:28px;font-size:1.05rem}

/* Footer */
.site-footer{border-top:1px solid var(--border);padding:24px 0;text-align:center;color:var(--text-muted);font-size:.82rem}

/* Spinner */
.spinner{animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Responsive */
@media(max-width:768px){
  .hero{padding:48px 0 36px}
  .hero h1{font-size:1.7rem}
  .product-header{grid-template-columns:1fr;gap:20px}
  .product-image-wrap{min-height:200px}
  .price-stats-grid{grid-template-columns:repeat(2,1fr)}
  .chart-wrap{height:220px}
  .product-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
  .product-card-img{height:130px}
}
@media(max-width:480px){
  .search-input-wrap{flex-direction:column;padding:8px}
  .search-input-wrap input{width:100%;text-align:center}
  .btn-primary{width:100%;justify-content:center}
  .price-stats-grid{grid-template-columns:1fr 1fr}
}