/* Clean, responsive styling for the mortgage dashboard */
:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --line: #d7dfeb;
  --ink: #18212f;
  --muted: #5e6b7c;
  --accent: #175cd3;
  --accent-soft: #e9f1ff;
  --danger: #b42318;
  --success: #12715b;
  --shadow: 0 12px 30px rgba(19, 33, 68, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #eef3fa 0%, var(--bg) 100%);
  color: var(--ink);
}

.page {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 24px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.layout {
  display: grid;
  grid-template-columns: 390px 1fr;
  gap: 20px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.inputs,
.outputs {
  min-height: 200px;
}

.scenarios {
  grid-column: 1 / -1;
}

h2, h3 {
  margin-top: 0;
}

.input-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

label span {
  display: block;
  margin-bottom: 6px;
  font-size: 0.92rem;
  color: var(--muted);
  font-weight: 700;
}

input, select, button {
  font: inherit;
}

input, select {
  width: 100%;
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
}

input:focus, select:focus {
  outline: 3px solid rgba(23, 92, 211, 0.15);
  border-color: var(--accent);
}

.toggle-row {
  margin-top: 18px;
}

.checkbox {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.checkbox input {
  width: auto;
  margin-top: 3px;
}

button {
  border: 0;
  border-radius: 12px;
  padding: 10px 14px;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.12s ease;
}

button:hover {
  transform: translateY(-1px);
}

.primary {
  background: var(--accent);
  color: #fff;
}

.secondary {
  background: var(--accent-soft);
  color: var(--accent);
}

.danger {
  background: #fee4e2;
  color: var(--danger);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.kpi {
  padding: 18px;
  border-radius: 16px;
  background: #f9fbff;
  border: 1px solid #e0e8f5;
}

.kpi-label {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.kpi strong {
  display: block;
  font-size: 1.8rem;
  margin-bottom: 6px;
}

.kpi small {
  color: var(--muted);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 14px;
}

.summary-box {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  background: #fff;
}

.row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid #edf1f7;
}

.row.total {
  border-bottom: 0;
  padding-bottom: 0;
  margin-top: 6px;
  font-weight: 700;
}

.chart-card {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  background: #fff;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 10px;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
}

.scenario-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.scenario-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
}

.scenario-title {
  margin-bottom: 6px;
}

.scenario-meta,
.muted {
  margin: 0;
  color: var(--muted);
}

.scenario-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .kpi-grid {
    grid-template-columns: repeat(2, minmax(160px, 1fr));
  }
}

@media (max-width: 720px) {
  .page {
    padding: 16px;
  }

  .hero {
    flex-direction: column;
    align-items: stretch;
  }

  .kpi-grid,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .scenario-item {
    flex-direction: column;
    align-items: stretch;
  }
}