:root {
      --preview-bg: linear-gradient(180deg, #f4f8ff 0%, #f7fcf5 42%, #fff9ef 100%);
      --preview-surface: rgba(255, 255, 255, 0.94);
      --preview-surface-strong: #ffffff;
      --preview-border: rgba(148, 163, 184, 0.22);
      --preview-shadow: 0 24px 48px rgba(15, 23, 42, 0.12);
      --preview-shadow-soft: 0 12px 28px rgba(15, 23, 42, 0.08);
      --preview-text: #0f172a;
      --preview-muted: #64748b;
      --preview-primary: #0f9f5f;
      --preview-primary-soft: #eaf8ef;
      --preview-accent: #2563eb;
      --preview-accent-soft: #eef4ff;
      --preview-warm: #fff4e5;
      --preview-radius: 22px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--preview-bg);
      color: var(--preview-text);
    }

    .preview-app {
      width: min(1200px, calc(100% - 32px));
      margin: 0 auto;
      padding: 24px 0 40px;
    }

    .preview-topbar,
    .preview-card,
    .preview-kpi,
    .preview-summary-card {
      border: 1px solid var(--preview-border);
      background: var(--preview-surface);
      box-shadow: var(--preview-shadow-soft);
      backdrop-filter: blur(18px);
    }

    .preview-topbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      padding: 18px 20px;
      border-radius: var(--preview-radius);
    }

    .preview-brand {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .preview-brand-mark {
      width: 46px;
      height: 46px;
      border-radius: 16px;
      background: linear-gradient(135deg, #e0f2fe 0%, #ecfdf3 100%);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--preview-accent);
      box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.08);
    }

    .preview-brand-copy strong,
    .preview-user-copy strong,
    .preview-card h2,
    .preview-card h3 {
      display: block;
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    .preview-brand-copy span,
    .preview-user-copy span,
    .preview-card-subtitle,
    .preview-card-note,
    .preview-list-meta,
    .preview-location-meta {
      color: var(--preview-muted);
      font-size: 0.92rem;
    }

    .preview-user {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .preview-user-score {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-radius: 999px;
      padding: 8px 12px;
      background: var(--preview-primary-soft);
      color: #047857;
      font-size: 0.84rem;
      font-weight: 700;
    }

    .preview-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, #dbeafe 0%, #dcfce7 100%);
      color: var(--preview-accent);
      font-weight: 800;
    }

    .preview-hero {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
      gap: 18px;
      margin-top: 18px;
    }

    .preview-summary-card,
    .preview-card {
      border-radius: var(--preview-radius);
      padding: 22px;
    }

    .preview-summary-card {
      background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.14), transparent 42%),
        radial-gradient(circle at bottom right, rgba(15, 159, 95, 0.16), transparent 36%),
        var(--preview-surface-strong);
      box-shadow: var(--preview-shadow);
    }

    .preview-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border-radius: 999px;
      padding: 7px 12px;
      background: var(--preview-accent-soft);
      color: var(--preview-accent);
      font-size: 0.78rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .preview-summary-card h1 {
      margin: 16px 0 10px;
      font-size: clamp(2rem, 3vw, 2.8rem);
      line-height: 1.05;
      letter-spacing: -0.04em;
    }

    .preview-summary-card p {
      margin: 0;
      max-width: 42rem;
      color: #334155;
      font-size: 1rem;
      line-height: 1.65;
    }

    .preview-summary-kpis {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 20px;
    }

    .preview-kpi {
      border-radius: 18px;
      padding: 14px 16px;
    }

    .preview-kpi span {
      display: block;
      color: var(--preview-muted);
      font-size: 0.82rem;
      font-weight: 600;
    }

    .preview-kpi strong {
      display: block;
      margin-top: 6px;
      font-size: 1.7rem;
      font-weight: 800;
      letter-spacing: -0.03em;
    }

    .preview-album-focus {
      display: grid;
      gap: 14px;
      align-content: space-between;
    }

    .preview-album-pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 6px 10px;
      border-radius: 999px;
      background: var(--preview-warm);
      color: #b45309;
      font-size: 0.78rem;
      font-weight: 700;
      width: fit-content;
    }

    .preview-progress-box {
      border-radius: 20px;
      background: var(--preview-surface-strong);
      border: 1px solid var(--preview-border);
      padding: 18px;
    }

    .preview-progress-head {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
    }

    .preview-progress-album {
      font-size: 1.1rem;
      font-weight: 800;
    }

    .preview-progress-bar {
      height: 12px;
      width: 100%;
      border-radius: 999px;
      overflow: hidden;
      background: #e2e8f0;
      margin-bottom: 10px;
    }

    .preview-progress-fill {
      height: 100%;
      width: 76%;
      border-radius: 999px;
      background: linear-gradient(90deg, #2563eb 0%, #0f9f5f 100%);
    }

    .preview-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
      margin-top: 18px;
    }

    .preview-card-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 18px;
    }

    .preview-card-header h2,
    .preview-card-header h3 {
      margin: 0;
      font-size: 1.05rem;
    }

    .preview-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 999px;
      padding: 6px 10px;
      background: #f8fafc;
      border: 1px solid var(--preview-border);
      font-size: 0.78rem;
      font-weight: 700;
      color: #475569;
      white-space: nowrap;
    }

    .preview-list {
      display: grid;
      gap: 12px;
    }

    .preview-list-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 14px 15px;
      border-radius: 18px;
      border: 1px solid rgba(148, 163, 184, 0.18);
      background: #ffffff;
    }

    .preview-list-main {
      min-width: 0;
    }

    .preview-list-title {
      font-weight: 700;
      margin-bottom: 4px;
    }

    .preview-list-meta {
      line-height: 1.45;
    }

    .preview-pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 7px 10px;
      border-radius: 999px;
      font-size: 0.78rem;
      font-weight: 700;
      white-space: nowrap;
    }

    .preview-pill--green {
      background: var(--preview-primary-soft);
      color: #047857;
    }

    .preview-pill--blue {
      background: var(--preview-accent-soft);
      color: var(--preview-accent);
    }

    .preview-pill--gold {
      background: var(--preview-warm);
      color: #b45309;
    }

    .preview-alerts {
      display: grid;
      gap: 12px;
    }

    .preview-alert {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 16px;
      border-radius: 18px;
      background: #ffffff;
      border: 1px solid rgba(148, 163, 184, 0.18);
    }

    .preview-alert-icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.15rem;
      background: var(--preview-accent-soft);
      color: var(--preview-accent);
    }

    .preview-alert-copy strong {
      display: block;
      margin-bottom: 4px;
      font-size: 0.98rem;
    }

    .preview-alert-copy span {
      color: var(--preview-muted);
      font-size: 0.88rem;
      line-height: 1.45;
    }

    .preview-duplicates {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }

    .preview-duplicate {
      padding: 16px;
      border-radius: 18px;
      background: #ffffff;
      border: 1px solid rgba(148, 163, 184, 0.18);
    }

    .preview-duplicate strong {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 1rem;
    }

    .preview-duplicate span {
      display: block;
      margin-top: 8px;
      color: var(--preview-muted);
      font-size: 0.88rem;
      line-height: 1.45;
    }

    .preview-location {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      padding: 14px 15px;
      border-radius: 18px;
      background: #ffffff;
      border: 1px solid rgba(148, 163, 184, 0.18);
    }

    .preview-location-main strong {
      display: block;
      margin-bottom: 4px;
    }

    .preview-location-meta {
      line-height: 1.45;
    }

    @media (max-width: 980px) {
      .preview-hero,
      .preview-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 640px) {
      .preview-app {
        width: min(100% - 20px, 1200px);
        padding: 14px 0 28px;
      }

      .preview-topbar,
      .preview-summary-card,
      .preview-card {
        padding: 18px;
      }

      .preview-topbar,
      .preview-list-row,
      .preview-location,
      .preview-alert {
        flex-direction: column;
        align-items: flex-start;
      }

      .preview-alert {
        grid-template-columns: 1fr;
      }

      .preview-duplicates,
      .preview-summary-kpis {
        grid-template-columns: 1fr;
      }
    }