@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary:    #050d1a;
  --bg-secondary:  #0a1628;
  --bg-card:       #0d1b35;
  --bg-elevated:   #112040;
  --bg-input:      #0a1628;
  --accent-blue:   #2563eb;
  --accent-cyan:   #06b6d4;
  --accent-hover:  #3b82f6;
  --text-primary:  #e8f4ff;
  --text-secondary:#94a3b8;
  --text-muted:    #475569;
  --border:        rgba(59,130,246,0.14);
  --border-hover:  rgba(59,130,246,0.35);
  --border-active: rgba(59,130,246,0.6);
  --success:       #10b981;
  --warning:       #f59e0b;
  --danger:        #ef4444;
  --penny:         #a855f7;
  --sidebar-w:     240px;
  --header-h:      60px;
  --radius:        12px;
  --radius-sm:     8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(ellipse 90% 60% at 50% -15%, rgba(37,99,235,0.28) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 85% 85%, rgba(6,182,212,0.09) 0%, transparent 55%),
    radial-gradient(ellipse 40% 35% at 15% 65%, rgba(59,130,246,0.07) 0%, transparent 55%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── App Shell ─────────────────────────────────────────────── */
.app-root {
  display: flex;
  min-height: 100vh;
}
.app-main {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left .25s ease;
}
.page-content {
  flex: 1;
  padding: 28px 32px;
  max-width: 1280px;
  width: 100%;
}

/* ── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform .25s ease;
}
.sidebar-logo {
  padding: 20px 20px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
}
.sidebar-logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0;
}
.sidebar-logo-text {
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
  line-height: 1.1;
}
.sidebar-logo-sub {
  font-size: 10px;
  color: var(--accent-cyan);
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.sidebar-nav {
  padding: 14px 10px;
  flex: 1;
}
.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  padding: 10px 12px 6px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 450;
  transition: all .18s ease;
  margin-bottom: 2px;
  white-space: nowrap;
  cursor: pointer;
}
.nav-item:hover {
  background: rgba(37,99,235,0.12);
  color: var(--text-primary);
}
.nav-item.active {
  background: rgba(37,99,235,0.2);
  color: #60a5fa;
  border-left: 3px solid var(--accent-blue);
  padding-left: 9px;
  font-weight: 500;
}
.nav-item .nav-icon { font-size: 17px; flex-shrink: 0; }
.sidebar-footer {
  padding: 14px 10px;
  border-top: 1px solid var(--border);
}
.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .18s;
}
.sidebar-user:hover { background: rgba(255,255,255,0.04); }
.sidebar-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600; flex-shrink: 0;
  color: white;
}
.sidebar-user-info { flex: 1; overflow: hidden; }
.sidebar-user-name { font-size: 13px; font-weight: 500; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-plan { font-size: 11px; color: var(--text-muted); }

/* ── Top Header ────────────────────────────────────────────── */
.app-header {
  height: var(--header-h);
  background: rgba(5,13,26,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-search {
  flex: 1;
  max-width: 440px;
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 14px;
  gap: 8px;
  transition: border-color .2s;
}
.header-search:focus-within { border-color: var(--accent-blue); }
.header-search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  padding: 9px 0;
  font-family: inherit;
}
.header-search input::placeholder { color: var(--text-muted); }
.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.header-icon-btn {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-secondary); font-size: 17px;
  transition: all .18s; text-decoration: none;
}
.header-icon-btn:hover { border-color: var(--border-hover); color: var(--text-primary); }
.hamburger { display: none; }

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .2s, box-shadow .2s;
  overflow: hidden;
}
.card:hover { border-color: var(--border-hover); box-shadow: 0 0 24px rgba(37,99,235,0.08); }
.card-pad { padding: 20px 24px; }
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.card-title { font-size: 15px; font-weight: 600; color: var(--text-primary); }

/* ── Stat Cards ─────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 16px; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color .2s;
}
.stat-card:hover { border-color: var(--border-hover); }
.stat-value { font-size: 28px; font-weight: 700; color: var(--text-primary); line-height: 1; }
.stat-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; font-weight: 500; text-transform: uppercase; letter-spacing: .05em; }
.stat-change { font-size: 12px; margin-top: 8px; }
.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500;
  cursor: pointer; border: none; outline: none;
  text-decoration: none; transition: all .18s ease;
  font-family: inherit; white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), #1d4ed8);
  color: white;
  box-shadow: 0 2px 12px rgba(37,99,235,0.3);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--accent-hover), var(--accent-blue)); box-shadow: 0 4px 20px rgba(37,99,235,0.4); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--border-hover); background: rgba(37,99,235,0.1); }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text-primary); border-color: var(--border-hover); }
.btn-danger { background: rgba(239,68,68,0.15); color: var(--danger); border: 1px solid rgba(239,68,68,0.3); }
.btn-danger:hover { background: rgba(239,68,68,0.25); }
.btn-lg { padding: 12px 28px; font-size: 15px; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-icon { padding: 8px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* ── Form Elements ───────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.form-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px; font-family: inherit;
  padding: 10px 14px;
  outline: none;
  transition: border-color .2s;
}
.form-input:focus { border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
.form-input::placeholder { color: var(--text-muted); }
select.form-input option { background: #0a1628; }
.form-hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Tables ─────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); padding: 12px 16px; border-bottom: 1px solid var(--border); }
td { padding: 14px 16px; border-bottom: 1px solid rgba(59,130,246,0.07); color: var(--text-secondary); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(37,99,235,0.04); color: var(--text-primary); }

/* ── Deal/Product Cards ──────────────────────────────────────── */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .2s;
}
.product-card:hover { border-color: var(--border-hover); box-shadow: 0 4px 24px rgba(37,99,235,0.1); transform: translateY(-2px); }
.product-card-img {
  aspect-ratio: 16/9;
  background: var(--bg-elevated);
  display: flex; align-items: center; justify-content: center;
  font-size: 40px;
  overflow: hidden;
}
.product-card-img img { width: 100%; height: 100%; object-fit: contain; padding: 10px; }
.product-card-body { padding: 16px; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.product-card-title { font-size: 14px; font-weight: 500; color: var(--text-primary); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-card-store { font-size: 12px; color: var(--text-muted); }
.product-card-price { display: flex; align-items: baseline; gap: 8px; margin-top: auto; }
.price-current { font-size: 20px; font-weight: 700; color: var(--success); }
.price-original { font-size: 13px; color: var(--text-muted); text-decoration: line-through; }
.price-pct { font-size: 12px; font-weight: 600; color: var(--warning); background: rgba(245,158,11,0.12); padding: 2px 6px; border-radius: 4px; }

/* ── Page Header ─────────────────────────────────────────────── */
.page-header { margin-bottom: 28px; }
.page-title { font-size: 24px; font-weight: 700; color: var(--text-primary); }
.page-subtitle { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }

/* ── Tabs ─────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.tab { padding: 10px 20px; font-size: 14px; font-weight: 500; color: var(--text-muted); cursor: pointer; border-bottom: 2px solid transparent; transition: all .18s; text-decoration: none; }
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--accent-cyan); border-bottom-color: var(--accent-cyan); }

/* ── Badges / Tags ───────────────────────────────────────────── */
.tag { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.tag-blue { background: rgba(37,99,235,0.15); color: #60a5fa; border: 1px solid rgba(37,99,235,0.25); }
.tag-green { background: rgba(16,185,129,0.12); color: var(--success); border: 1px solid rgba(16,185,129,0.25); }
.tag-yellow { background: rgba(245,158,11,0.12); color: var(--warning); border: 1px solid rgba(245,158,11,0.25); }
.tag-red { background: rgba(239,68,68,0.12); color: var(--danger); border: 1px solid rgba(239,68,68,0.25); }
.tag-purple { background: rgba(168,85,247,0.15); color: #c084fc; border: 1px solid rgba(168,85,247,0.25); }

/* ── Dividers ─────────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* ── Alerts / Banners ─────────────────────────────────────────── */
.alert-info { background: rgba(37,99,235,0.1); border: 1px solid rgba(37,99,235,0.25); border-radius: var(--radius-sm); padding: 12px 16px; font-size: 13px; color: #93c5fd; }
.alert-success { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.25); border-radius: var(--radius-sm); padding: 12px 16px; font-size: 13px; color: #6ee7b7; }
.alert-warning { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.25); border-radius: var(--radius-sm); padding: 12px 16px; font-size: 13px; color: #fde68a; }

/* ── Loading ──────────────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-elevated) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Marketing Nav ────────────────────────────────────────────── */
.marketing-nav {
  display: flex; align-items: center;
  padding: 0 48px;
  height: 68px;
  border-bottom: 1px solid var(--border);
  background: rgba(5,13,26,0.9);
  backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 100;
}
.marketing-nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.marketing-nav-logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  border-radius: 8px; font-size: 20px;
  display: flex; align-items: center; justify-content: center;
}
.marketing-nav-logo-text { font-size: 18px; font-weight: 800; color: var(--text-primary); }
.marketing-nav-links { display: flex; gap: 4px; margin-left: 36px; }
.marketing-nav-links a { padding: 6px 14px; font-size: 14px; color: var(--text-secondary); text-decoration: none; border-radius: 6px; transition: all .18s; }
.marketing-nav-links a:hover { color: var(--text-primary); background: rgba(255,255,255,0.04); }
.marketing-nav-actions { margin-left: auto; display: flex; gap: 10px; align-items: center; }

/* ── Footer ───────────────────────────────────────────────────── */
footer { border-top: 1px solid var(--border); padding: 40px 48px; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand-text { font-size: 13px; color: var(--text-muted); margin-top: 10px; line-height: 1.6; max-width: 220px; }
.footer-col h4 { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .07em; color: var(--text-muted); margin-bottom: 12px; }
.footer-col a { display: block; font-size: 13px; color: var(--text-muted); text-decoration: none; margin-bottom: 8px; transition: color .18s; }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--text-muted); }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .app-main { margin-left: 0; }
  .hamburger { display: flex !important; }
  .page-content { padding: 20px 16px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .marketing-nav { padding: 0 20px; }
  .marketing-nav-links { display: none; }
  footer { padding: 30px 20px; }
  .app-header { padding: 0 16px; }
  .marketing-nav-logo-text { font-size: 16px; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* ── Overlay ──────────────────────────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}
.sidebar-overlay.open { display: block; }

/* ── Scrollbar ────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-blue); }

/* ── Empty State ─────────────────────────────────────────────── */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-state-icon { font-size: 48px; margin-bottom: 16px; opacity: .4; }
.empty-state-title { font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.empty-state-text { font-size: 14px; color: var(--text-muted); max-width: 320px; margin: 0 auto 20px; }

/* ── Confidence Meter ─────────────────────────────────────────── */
.confidence-bar { height: 4px; background: var(--bg-elevated); border-radius: 2px; overflow: hidden; }
.confidence-fill { height: 100%; border-radius: 2px; transition: width .5s ease; }
.confidence-fill.high { background: linear-gradient(90deg, var(--success), #34d399); }
.confidence-fill.med  { background: linear-gradient(90deg, var(--warning), #fbbf24); }
.confidence-fill.low  { background: linear-gradient(90deg, var(--danger), #f87171); }

/* ── Retailer Colors ─────────────────────────────────────────── */
.retailer-hd     { color: #f96302; }
.retailer-lowes  { color: #004990; }
.retailer-walmart { color: #0071CE; }
.retailer-target { color: #CC0000; }
.retailer-bestbuy { color: #003087; }
.retailer-amazon { color: #FF9900; }