.pareto-page {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: calc(100vh - 76px);
  padding: var(--space-6) clamp(var(--space-4), 3vw, var(--space-6)) var(--space-12);
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  color: var(--text-primary);
  padding-top: max(6.75rem, calc(var(--space-6) + 4.5rem));

  &--guest {
    padding-top: max(7.5rem, calc(var(--space-10) + 5rem));
  }

  .container {
    max-width: 1100px;
  }
}

.pareto-header {
  text-align: center;
  margin-bottom: var(--space-6);

  h1 {
    color: var(--text-primary);
    font-weight: 800;
    margin-bottom: var(--space-2);
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    line-height: 1.1;

    &::after {
      content: '';
      display: block;
      width: 60px;
      height: 4px;
      background: var(--primary);
      border-radius: 999px;
      margin: var(--space-2) auto 0;
    }
  }

  .lead {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.7;
  }
}

.pareto-intro {
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(148, 163, 184, 0.22);
  padding: var(--space-5);
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(59, 130, 246, 0.12) 100%);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-lg);

  h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  p {
    margin: 0;
    line-height: 1.65;
  }
}

.pareto-controls {
  margin-bottom: var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: var(--bg-primary);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(148, 163, 184, 0.25);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  position: relative;
  z-index: 2;

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: 0.65rem 1.4rem !important;
    border-radius: 999px !important;
    border: none;
    font-weight: 600;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-shadow: 0 14px 28px -18px rgba(15, 23, 42, 0.35);
    font-size: 0.95rem;

    &:focus-visible {
      outline: 3px solid rgba(79, 70, 229, 0.35);
      outline-offset: 2px;
    }

    &:hover:not(:disabled) {
      transform: translateY(-2px);
      box-shadow: 0 18px 36px -20px rgba(37, 99, 235, 0.45);
    }
  }

  .btn-primary,
  .btn-info {
    background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%) !important;
    color: #fff !important;
  }

  .btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
    color: #fff !important;
  }

  .btn-outline-danger {
    background: #fff;
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.45) !important;

    &:hover {
      background: rgba(239, 68, 68, 0.08);
      color: #b91c1c;
    }
  }

  .btn-outline-secondary {
    background: #fff;
    color: var(--text-primary);
    border: 1px solid rgba(148, 163, 184, 0.55) !important;

    &:hover {
      background: rgba(148, 163, 184, 0.12);
      color: var(--primary);
    }
  }

  .btn-outline-primary {
    background: #fff;
    color: var(--primary);
    border: 1px solid rgba(79, 70, 229, 0.45) !important;

    &:hover {
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary-dark);
    }
  }

  .dropdown-menu {
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.22);
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.15);
    padding: var(--space-2) 0;
  }

  .dropdown-item {
    padding: var(--space-3) var(--space-5);
    font-weight: 500;
    color: var(--text-primary);

    &:hover {
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
    }
  }
}

.pareto-form {
  background: var(--bg-primary);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(148, 163, 184, 0.22);
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-5);

  h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
  }

  .btn-outline-success {
    border: 2px solid #10b981 !important;
    color: #10b981 !important;
    font-weight: 600;
    background: #fff !important;
    transition: all 0.2s ease;

    &:hover {
      background: #10b981 !important;
      color: #fff !important;
      border-color: #059669 !important;
      transform: scale(1.05);
    }

    &:focus-visible {
      outline: 3px solid rgba(16, 185, 129, 0.35);
      outline-offset: 2px;
    }
  }
}

.pareto-data-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pareto-data-entry {
  display: grid;
  grid-template-columns: 2fr 1fr auto;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(248, 250, 252, 0.96);
  box-shadow: var(--shadow-xs);

  input {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.3);
    padding: 0.8rem 1rem;
    font-size: 0.95rem;
    background: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    color: var(--text-primary);

    &:focus {
      border-color: var(--cyan);
      box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.16);
      outline: none;
    }
  }

  .btn-remove {
    min-width: 46px;
    border: 2px solid #ef4444 !important;
    color: #ef4444 !important;
    font-weight: 600;
    background: #fff !important;
    transition: all 0.2s ease;

    &:hover {
      background: #ef4444 !important;
      color: #fff !important;
      border-color: #dc2626 !important;
      transform: scale(1.05);
    }

    &:focus-visible {
      outline: 3px solid rgba(239, 68, 68, 0.35);
      outline-offset: 2px;
    }
  }
}

.pareto-results {
  background: var(--bg-primary);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(148, 163, 184, 0.22);
  padding: var(--space-5);
  box-shadow: var(--shadow-xl);
  margin-bottom: var(--space-8);
}

.pareto-chart-container {
  background: rgba(248, 250, 252, 0.96);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.18);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-5);

  canvas {
    width: 100%;
    min-height: 340px;
  }
}

.pareto-table {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-5);

  table {
    width: 100%;
    border-collapse: collapse;
  }

  th {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.95), rgba(59, 130, 246, 0.95));
    color: #fff;
    padding: 0.85rem;
    font-weight: 600;
    font-size: 0.88rem;
    text-align: left;
  }

  td {
    padding: 0.8rem;
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
    font-size: 0.9rem;
    color: var(--text-secondary);
  }

  tr.highlight td {
    background: rgba(34, 197, 94, 0.12);
    font-weight: 600;
    color: var(--success-dark);
  }

  tr:hover td {
    background: rgba(14, 165, 233, 0.08);
  }
}

.pareto-insights {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(52, 211, 153, 0.12));
  border-radius: var(--radius-xl);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: var(--space-4);
  color: #0f766e;

  h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  ul {
    margin: 0;
    padding-left: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    color: inherit;

    li {
      line-height: 1.6;
    }
  }
}

@media (max-width: 992px) {
  .pareto-page {
    padding: var(--space-6) clamp(var(--space-3), 4vw, var(--space-5)) var(--space-10);
    padding-top: max(6.75rem, calc(var(--space-6) + 4.75rem));
  }

  .pareto-data-entry {
    grid-template-columns: 1fr;

    .btn-remove {
      width: 100%;
    }
  }

  .pareto-controls {
    padding: var(--space-3);

    .btn {
      font-size: 0.85rem;
      padding: var(--space-2) var(--space-3);
    }
  }
}

@media (max-width: 640px) {
  .pareto-page {
    padding: var(--space-5) var(--space-3) var(--space-8);
    padding-top: max(6.75rem, calc(var(--space-6) + 5rem));
  }

  .pareto-controls .btn {
    width: 100%;
  }

  .pareto-chart-container canvas {
    min-height: 260px;
  }
}