:root {
  --primary: #0d6efd;
  --primary-dark: #0b5ed7;
  --background: #f8f9fa;
  --surface: #ffffff;
  --border: #dee2e6;
  --text: #212529;
  --muted: #6c757d;
  --success: #198754;
  --warning: #ffc107;
  --danger: #dc3545;
}

body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--background);
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #e7f1ff 0%, #f8f9fa 55%, #ffffff 100%);
}

.login-card {
  width: min(440px, calc(100vw - 32px));
  border: 0;
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(13, 110, 253, 0.14);
}

.app-shell {
  min-height: 100vh;
}

.sidebar {
  width: 280px;
  min-height: 100vh;
  background: #0f172a;
  color: #e2e8f0;
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 1020;
}

.sidebar .brand {
  padding: 24px;
  font-weight: 800;
  color: #ffffff;
}

.sidebar .nav-link {
  color: #cbd5e1;
  border-radius: 12px;
  margin: 4px 16px;
  padding: 12px 14px;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
  color: #ffffff;
  background: rgba(13, 110, 253, 0.9);
}

.main-content {
  margin-left: 280px;
  min-height: 100vh;
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1010;
}

.content-wrap {
  padding: 28px;
}

.stat-card,
.management-card,
.preview-card,
.form-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.stat-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: var(--primary);
  background: #e7f1ff;
}

.product-logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: #e7f1ff;
  color: var(--primary);
  font-weight: 800;
}

.rating-stars {
  color: #f59f00;
}

.store-preview-frame.mobile {
  max-width: 390px;
  margin-inline: auto;
  border: 10px solid #111827;
  border-radius: 34px;
  overflow: hidden;
}

.empty-state {
  border: 1px dashed var(--border);
  border-radius: 18px;
  padding: 40px 24px;
  text-align: center;
  color: var(--muted);
  background: #ffffff;
}

@media (max-width: 991.98px) {
  .sidebar {
    display: none;
  }

  .main-content {
    margin-left: 0;
  }

  .content-wrap {
    padding: 18px;
  }
}