/* ==========================================================================
   EMI Calculator.loan — Calculator Styles
   Inputs, Single Tenure Control, Dynamic Results, Charts, Gauges, Amortization
   ========================================================================== */

/* Main Calculator Grid (Form + Result) */
.calculator-container {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 1.75rem;
  align-items: start;
  margin: 1.5rem 0 2.5rem;
}

/* Form Card */
.form-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.input-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.85rem;
  margin-bottom: 0.25rem;
}

.input-header h2 {
  font-size: 1.25rem;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.input-header p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

/* Input Fields */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.field label .hint {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.input-wrap input {
  width: 100%;
  padding: 0.75rem 0.85rem;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 48px;
}

.input-wrap input:hover {
  border-color: var(--color-accent);
}

.input-wrap input:focus {
  border-color: var(--border-focus);
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Prefix / Suffix adornments */
.input-wrap.has-prefix input {
  padding-left: 2.25rem;
}

.input-wrap.has-suffix input {
  padding-right: 2.25rem;
}

.input-prefix {
  position: absolute;
  left: 0.85rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-muted);
  pointer-events: none;
  user-select: none;
}

.input-suffix {
  position: absolute;
  right: 0.85rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-muted);
  pointer-events: none;
  user-select: none;
}

/* Single Tenure Input Control (Input + Unit Toggle) */
.tenure-control {
  display: grid;
  grid-template-columns: 1fr 140px;
  gap: 0.5rem;
  align-items: center;
}

.period-toggle {
  display: flex;
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 3px;
  height: 48px;
}

.period-btn {
  flex: 1;
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.period-btn.active,
.period-btn[aria-pressed="true"] {
  background-color: var(--bg-card);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.field-help {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.field-error {
  display: none;
  font-size: 0.8125rem;
  color: var(--color-rose);
  font-weight: 500;
}

.field.error .field-error {
  display: block;
}

.field.error .input-wrap input {
  border-color: var(--color-rose);
  background-color: var(--color-rose-light);
}

/* Radio Strategy Switcher (e.g. for Prepayment Reduce Tenure vs Reduce EMI) */
.strategy-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 4px;
}

.strategy-btn {
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.strategy-btn.active,
.strategy-btn[aria-pressed="true"] {
  background-color: var(--bg-card);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* Results Card */
.result-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1.5px solid #cbd5e1;
  position: relative;
  overflow: hidden;
}

.result-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-teal));
}

.result-hero {
  text-align: center;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.result-tag {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.result-value-main {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}

.result-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.metric-tile {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.metric-tile span {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.metric-tile strong {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.metric-tile.highlight-principal {
  border-left: 4px solid var(--color-teal);
}

.metric-tile.highlight-interest {
  border-left: 4px solid var(--color-amber);
}

.metric-tile.highlight-total {
  border-left: 4px solid var(--color-accent);
}

.metric-tile.highlight-savings {
  border-left: 4px solid var(--color-emerald);
  background-color: var(--color-teal-light);
}

/* Visual Presentation (Donut Chart & Comparison Bars) */
.chart-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 0.75rem 0;
}

.donut-wrap {
  position: relative;
  width: 180px;
  height: 180px;
}

.donut-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.donut-bg {
  fill: none;
  stroke: var(--bg-card-alt);
  stroke-width: 24;
}

.donut-segment-principal {
  fill: none;
  stroke: var(--color-teal);
  stroke-width: 24;
  stroke-linecap: round;
  transition: stroke-dasharray 0.5s ease;
}

.donut-segment-interest {
  fill: none;
  stroke: var(--color-amber);
  stroke-width: 24;
  stroke-linecap: round;
  transition: stroke-dasharray 0.5s ease, stroke-dashoffset 0.5s ease;
}

.donut-center-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}

.donut-center-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
}

.donut-center-pct {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}

.chart-legend {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  width: 100%;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
}

.legend-dot.principal { background-color: var(--color-teal); }
.legend-dot.interest { background-color: var(--color-amber); }
.legend-dot.fee { background-color: var(--color-rose); }
.legend-dot.tax { background-color: #8b5cf6; }

/* Visual Progress Bar */
.visual-bar-wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.visual-bar {
  height: 14px;
  width: 100%;
  background-color: var(--color-amber);
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
}

.visual-bar-fill {
  height: 100%;
  background-color: var(--color-teal);
  transition: width 0.4s ease;
}

/* DTI Health Gauge */
.dti-gauge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 0;
  width: 100%;
}

.gauge-svg-container {
  width: 220px;
  height: 120px;
  position: relative;
}

.gauge-svg {
  width: 100%;
  height: 100%;
}

.gauge-needle {
  transform-origin: 100px 100px;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.dti-badge-status {
  padding: 0.4rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius-full);
}

/* Side-by-Side Comparison Table */
.comparison-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-top: 1rem;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  background-color: var(--bg-card-alt);
  font-weight: 600;
  color: var(--text-main);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr.highlight-row {
  background-color: var(--color-teal-light);
  font-weight: 600;
}

/* Amortization Schedule Section */
.amortization-section {
  margin-top: 2rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.amortization-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.amortization-header h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin: 0;
}

.tab-group {
  display: flex;
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2px;
}

.tab-btn {
  padding: 0.35rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
  background: transparent;
  border: none;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn.active {
  background-color: var(--bg-card);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  max-height: 420px;
  overflow-y: auto;
}

.amortization-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: right;
}

.amortization-table th,
.amortization-table td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.amortization-table th {
  background-color: var(--bg-card-alt);
  font-weight: 600;
  color: var(--text-main);
  position: sticky;
  top: 0;
  z-index: 2;
}

.amortization-table th:first-child,
.amortization-table td:first-child {
  text-align: left;
}

.amortization-table tr:hover td {
  background-color: #f8fafc;
}