/* Shared tokens (colors, radius, shadow, fonts) come from /shared/tokens.css */
:root {
  --nav-height: var(--tool-nav-height);
  --card-gap: 0.75rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── layout ──────────────────────────────────────────────────────────────── */

.app {
  display: flex;
  align-items: stretch;
  flex: 1;
  min-height: 0;
}

.summary {
  flex-shrink: 0;
  width: 240px;
  padding: 1.25rem;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--surface);
  position: sticky;
  top: var(--nav-height);
  align-self: flex-start;
  min-height: calc(100vh - var(--nav-height));
  z-index: 10;
}

.workspace {
  flex: 1;
  min-width: 0;
  padding: 1.5rem;
}

.form-stack {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--card-gap);
}

/* ── summary cards ───────────────────────────────────────────────────────── */

.summary-card {
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  background: var(--accent-soft);
  border: 1px solid rgba(var(--accent-rgb), 0.25);
}

.summary-card--primary {
  border-color: rgba(var(--accent-rgb), 0.4);
}

.summary-card--muted {
  background: transparent;
  border-color: var(--border);
}

.summary-card--savings {
  background: var(--success-soft);
  border-color: color-mix(in srgb, var(--success) 35%, transparent);
}

.summary-card--savings-muted {
  background: transparent;
  border-color: color-mix(in srgb, var(--success) 20%, transparent);
}

.summary-label {
  margin: 0 0 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
}

.summary-value {
  margin: 0;
  font-family: var(--font-display);
  text-transform: var(--display-case);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.15;
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.summary-value--sm {
  font-size: 1.2rem;
}
.summary-value--warn .summary-number {
  color: var(--warning);
}
.summary-value--green .summary-number {
  color: var(--success);
}

.summary-number {
  font-variant-numeric: tabular-nums;
}

.summary-currency {
  font-size: 0.8em;
  font-weight: 600;
  color: var(--text-muted);
}

.summary-divider {
  height: 1px;
  background: var(--border);
  margin: 0.15rem 0;
}

/* ── cards ───────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  min-height: 3rem;
}

.card-header-text {
  flex: 1;
  min-width: 0;
}

.card-title {
  margin: 0;
  font-family: var(--font-display);
  text-transform: var(--display-case);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-hint {
  margin: 0.2rem 0 0;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.card-body {
  padding: 0.85rem 1.25rem 1.25rem;
  border-top: 1px solid var(--border);
}

/* ── fields ──────────────────────────────────────────────────────────────── */

.field {
  display: grid;
  gap: 0.55rem;
}

.field + .field {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.field-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
}

.field-value {
  font-weight: 600;
  color: var(--accent-text);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

input[type="range"] {
  width: 100%;
  height: 6px;
  margin: 0.25rem 0.1rem;
  accent-color: var(--accent);
  cursor: pointer;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 0.5rem 0.7rem;
  font: inherit;
  font-size: 0.875rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

input:focus,
select:focus {
  outline: 2px solid var(--accent-text);
  outline-offset: 1px;
}

.input-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.input-suffix {
  position: absolute;
  right: 0.65rem;
  font-size: 0.79rem;
  font-weight: 500;
  color: var(--text-muted);
  pointer-events: none;
  user-select: none;
}

.num-input {
  width: 110px;
  flex-shrink: 0;
}

.input-wrap .num-input {
  padding-right: 2.8rem;
}

/* ── tabs ────────────────────────────────────────────────────────────────── */

.tab-row {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 3px;
}

.tab-btn {
  flex: 1;
  padding: 0.4rem 0.75rem;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition:
    color 0.15s,
    background 0.15s;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.is-active {
  color: var(--text);
  background: var(--surface);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* ── pill buttons (EURIBOR index) ────────────────────────────────────────── */

.pill-row {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.pill-btn {
  padding: 0.3rem 0.85rem;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  transition:
    color 0.15s,
    border-color 0.15s,
    background 0.15s;
}

.pill-btn:hover {
  color: var(--text);
  border-color: rgba(var(--accent-rgb), 0.35);
}

.pill-btn.is-active {
  color: var(--accent-text);
  background: var(--accent-soft);
  border-color: rgba(var(--accent-rgb), 0.45);
}

/* ── effective rate badge ────────────────────────────────────────────────── */

.effective-rate {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.1rem;
  flex-shrink: 0;
}

.effective-rate__label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
}

.effective-rate__value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-text);
  font-variant-numeric: tabular-nums;
}

/* ── rate composition row ────────────────────────────────────────────────── */

.rate-composition {
  margin-top: 0.9rem;
  padding: 0.5rem 0.85rem 0.65rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-variant-numeric: tabular-nums;
}

.rc-row-labels {
  display: flex;
  justify-content: space-between;
  padding: 0 0.15rem;
  margin-bottom: 0.3rem;
}

.rc-row-labels span {
  font-size: 0.67rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.rc-row-formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}

.rc-op {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.rc-sum {
  color: var(--accent-text);
  font-size: 1rem;
  font-weight: 700;
}

/* ── rate panel ──────────────────────────────────────────────────────────── */

.rate-panel[hidden] {
  display: none;
}

/* ── toggle switch ───────────────────────────────────────────────────────── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.toggle-wrap {
  cursor: pointer;
  display: flex;
  align-items: center;
}

.toggle-track {
  display: inline-block;
  width: 40px;
  height: 22px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 11px;
  position: relative;
  transition: background 0.2s;
}

@media (prefers-color-scheme: light) {
  .toggle-track {
    background: rgba(0, 0, 0, 0.14);
  }
}

.toggle-input:checked + .toggle-track {
  background: var(--accent);
}

.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.toggle-input:checked + .toggle-track .toggle-thumb {
  transform: translateX(18px);
}

/* ── summary toggle (mobile only) ───────────────────────────────────────── */

.summary-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition:
    color 0.15s,
    background 0.15s;
}

.summary-toggle svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s;
}

.summary-toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

/* ── chart ───────────────────────────────────────────────────────────────── */

.chart-body {
  padding-bottom: 1rem;
}

.chart-svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

/* SVG styles via CSS custom properties */
.chart-grid {
  stroke: var(--border);
  stroke-dasharray: 4 4;
}

.chart-axis {
  stroke: var(--border);
}

.chart-lbl {
  font-family:
    system-ui,
    -apple-system,
    sans-serif;
  font-size: 10px;
  fill: var(--text-muted);
}

.chart-line--standard {
  stroke: var(--accent);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-line--early {
  stroke: var(--success);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 7 3;
}

.chart-savings-area {
  fill: var(--success-soft);
}

.chart-legend {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
}

.legend-item {
  display: inline-flex;
  align-items: flex-start;
  gap: 0.35rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.15em;
}

.legend-dot--accent {
  background: var(--accent);
}
.legend-dot--green {
  background: var(--success);
}

.legend-text {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ── breakdown bars ──────────────────────────────────────────────────────── */

/* One grid for all rows, so the label column fits the longest label (e.g. Serbian
   "Redovna otplata") and the bars still line up */
.chart-breakdown {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr) max-content;
  align-items: center;
  gap: 0.65rem;
}

.breakdown-legend {
  grid-column: 1 / -1;
  display: flex;
  gap: 1rem;
  margin-bottom: 0.25rem;
}

.breakdown-legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.breakdown-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.breakdown-swatch--principal {
  background: var(--accent);
  opacity: 0.8;
}
.breakdown-swatch--interest {
  background: var(--warning);
  opacity: 0.85;
}

.breakdown-row {
  display: contents;
}

.breakdown-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
}

.breakdown-bar {
  height: 18px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  display: flex;
}

.breakdown-seg {
  height: 100%;
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.breakdown-seg--principal {
  background: var(--accent);
  opacity: 0.8;
}
.breakdown-seg--interest {
  background: var(--warning);
  opacity: 0.85;
}
.breakdown-seg--interest-early {
  background: var(--warning);
  opacity: 0.6;
}

.breakdown-total {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  text-align: right;
}

/* ── responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .app {
    flex-direction: column;
  }

  .summary {
    width: 100%;
    min-height: 0;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: stretch;
    gap: 0.5rem;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1rem;
    position: sticky;
    top: var(--nav-height);
    z-index: 20;
  }

  .summary-card {
    flex: 1 1 120px;
    padding: 0.6rem 0.8rem;
  }

  .summary-card--savings,
  .summary-card--savings-muted {
    flex-basis: 130px;
  }

  .summary-value {
    font-size: 1.2rem;
  }
  .summary-value--sm {
    font-size: 1rem;
  }

  .summary-divider {
    display: none;
  }

  /* flex break: forces secondary cards onto a new row */
  .summary-break {
    display: block;
    flex-basis: 100%;
    height: 0;
    margin: 0;
    padding: 0;
  }

  .summary-card--primary {
    flex: 1;
  }

  /* summary collapse toggle sits in-flow right of primary card */
  .summary-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    align-self: center;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
  }

  .summary.is-collapsed .summary-card--muted,
  .summary.is-collapsed .summary-card--savings,
  .summary.is-collapsed .summary-card--savings-muted {
    display: none;
  }

  .workspace {
    padding: 0.85rem;
  }

  .form-stack {
    gap: 0.6rem;
  }
}

@media (max-width: 480px) {
  .chart-breakdown {
    gap: 0.5rem;
  }

  /* allow card header to wrap so chart legend doesn't overlap title */
  .card-header {
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .chart-legend {
    width: 100%;
  }
}

/* When the EURIBOR defaults were last updated (content.json "euriborUpdated") */
.rates-note {
  margin: 0.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Reset: back to the defaults */
.workspace-actions {
  display: flex;
  justify-content: flex-end;
}

.reset-btn {
  padding: 0.5rem 1rem;
  font: 600 0.8125rem/1.2 var(--button-font);
  text-transform: var(--button-case);
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    color 0.15s,
    border-color 0.15s;
}

.reset-btn:hover,
.reset-btn:focus-visible {
  color: var(--accent-text);
  border-color: var(--accent-text);
}