@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Inter:opsz,wght@14..32,400..800&display=swap');

:root {
  --color-primary: #0F766E;
  --color-primary-hover: #0d6b64;
  --color-secondary: #14B8A6;
  --color-accent: #0369A1;
  --color-background: #FFFFFF;
  --color-surface: #F8FAFA;
  --color-foreground: #0F1E1D;
  --color-muted-fg: #5B6B6A;
  --color-muted: #EEF4F3;
  --color-border: #DCE6E4;
  --color-destructive: #DC2626;
  --color-positive: #0F766E;
  --color-ring: #0F766E;
  --shadow-sm: 0 1px 2px rgba(15, 30, 29, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 30, 29, 0.08);
  --radius: 10px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --color-primary: #2DD4BF;
  --color-primary-hover: #5eead4;
  --color-secondary: #14B8A6;
  --color-accent: #38BDF8;
  --color-background: #0B1514;
  --color-surface: #101E1C;
  --color-foreground: #EAF3F1;
  --color-muted-fg: #9FB3B0;
  --color-muted: #16302C;
  --color-border: #1F3936;
  --color-destructive: #F87171;
  --color-positive: #2DD4BF;
  --color-ring: #2DD4BF;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #2DD4BF;
    --color-primary-hover: #5eead4;
    --color-secondary: #14B8A6;
    --color-accent: #38BDF8;
    --color-background: #0B1514;
    --color-surface: #101E1C;
    --color-foreground: #EAF3F1;
    --color-muted-fg: #9FB3B0;
    --color-muted: #16302C;
    --color-border: #1F3936;
    --color-destructive: #F87171;
    --color-positive: #2DD4BF;
    --color-ring: #2DD4BF;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--color-background);
  color: var(--color-foreground);
  font-feature-settings: 'tnum' 1, 'cv11' 1;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -0.01em; }

.app { max-width: 1400px; margin: 0 auto; padding: 0 24px 48px; }

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 18px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-icon { color: var(--color-primary); flex-shrink: 0; }
.brand h1 { font-size: 1.25rem; }
.subtitle { margin: 2px 0 0; color: var(--color-muted-fg); font-size: 0.875rem; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }

.currency-select { display: flex; align-items: center; gap: 6px; font-size: 0.8125rem; color: var(--color-muted-fg); }
.currency-select select {
  font-family: inherit;
  font-size: 0.8125rem;
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-foreground);
  cursor: pointer;
}

.btn {
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-foreground);
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, transform 120ms ease;
}
.btn:hover { background: var(--color-muted); }
.btn:active { transform: scale(0.98); }
.btn:focus-visible { outline: 2px solid var(--color-ring); outline-offset: 2px; }
.btn-ghost { background: transparent; }
.btn-small { padding: 6px 10px; font-size: 0.75rem; }
.btn-icon { padding: 8px; display: inline-flex; align-items: center; justify-content: center; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
a.btn { display: inline-flex; align-items: center; text-decoration: none; }
.btn-remove {
  border: none;
  background: transparent;
  color: var(--color-muted-fg);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  display: inline-flex;
  transition: background-color 150ms ease, color 150ms ease;
}
.btn-remove:hover { background: var(--color-muted); color: var(--color-destructive); }
.btn-remove:focus-visible { outline: 2px solid var(--color-ring); outline-offset: 2px; }

/* Tabs */
.mode-tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--color-border); margin-bottom: 24px; }
.tab {
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 12px 4px;
  margin-right: 24px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-muted-fg);
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease;
}
.tab:hover { color: var(--color-foreground); }
.tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab:focus-visible { outline: 2px solid var(--color-ring); outline-offset: 2px; border-radius: 4px; }

/* Layout */
.panel { display: none; }
.panel.active { display: block; }
.layout { display: block; }

.about-layout { display: flex; flex-direction: column; gap: 20px; max-width: 720px; margin: 0 auto; }
.about-copy { font-size: 0.9375rem; line-height: 1.6; margin: 0 0 12px; }
.about-copy:last-child { margin-bottom: 0; }
.form-actions { margin-top: 16px; display: flex; align-items: center; gap: 12px; }
.form-status { font-size: 0.8125rem; }
.form-status-success { color: var(--color-positive); }
.form-status-error { color: var(--color-destructive); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

.panel.active .inputs-col,
.panel.active .results-col { display: block; }

.panel {
  display: none;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  align-items: start;
}
.panel.active { display: grid; }

@media (max-width: 900px) {
  .panel.active { display: flex; flex-direction: column; }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}
.card h2 { font-size: 1rem; margin-bottom: 14px; }
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.card-head h2 { margin-bottom: 0; }
.card h2 em, .field span em { font-style: normal; font-weight: 400; color: var(--color-muted-fg); font-size: 0.8em; }

.hint { font-size: 0.8125rem; color: var(--color-muted-fg); margin: -6px 0 14px; }

.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.field-grid .field:only-child,
.field-grid .field.full { grid-column: 1 / -1; }
@media (max-width: 560px) { .field-grid { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 6px; font-size: 0.8125rem; }
.field > span:first-child { font-weight: 600; color: var(--color-foreground); }
.field-note { font-size: 0.75rem; color: var(--color-muted-fg); }
.field-label-row { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.field-label-row .link-btn { font-weight: 600; white-space: nowrap; }

input[type="text"], input[type="number"] {
  font-family: inherit;
  font-size: 0.9375rem;
  padding: 9px 12px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-background);
  color: var(--color-foreground);
  width: 100%;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
input[type="text"]:focus, input[type="number"]:focus {
  outline: none;
  border-color: var(--color-ring);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-ring) 20%, transparent);
}
input[type="number"]::-webkit-inner-spin-button { opacity: 1; }

textarea, select {
  font-family: inherit;
  font-size: 0.9375rem;
  padding: 9px 12px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-background);
  color: var(--color-foreground);
  width: 100%;
  resize: vertical;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-ring);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-ring) 20%, transparent);
}

.input-currency { display: flex; align-items: center; border: 1px solid var(--color-border); border-radius: 8px; background: var(--color-background); overflow: hidden; }
.input-currency:focus-within { border-color: var(--color-ring); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-ring) 20%, transparent); }
.input-currency .prefix { padding: 0 0 0 12px; color: var(--color-muted-fg); font-size: 0.9375rem; user-select: none; }
.input-currency input { border: none; box-shadow: none !important; background: transparent; }
.input-currency input:focus { box-shadow: none !important; }
.input-currency.suffix { justify-content: space-between; }
.suffix-label { padding: 0 12px; color: var(--color-muted-fg); font-size: 0.875rem; white-space: nowrap; }

/* Dynamic row lists (expenses, renovation) */
.row-list { display: flex; flex-direction: column; gap: 8px; }
.row-item {
  display: grid;
  grid-template-columns: 1fr 130px auto auto;
  gap: 8px;
  align-items: center;
}
.row-item input[type="text"] { font-size: 0.875rem; }
.row-item input[type="number"] { font-size: 0.875rem; text-align: right; }
.row-check {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--color-muted-fg);
  white-space: nowrap;
}
.row-check input { accent-color: var(--color-primary); cursor: pointer; }

.renovation-list .row-item { grid-template-columns: 1.4fr 110px 110px auto; }

@media (max-width: 640px) {
  .row-item { grid-template-columns: 1fr; }
  .renovation-list .row-item { grid-template-columns: 1fr; }
}

.row-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--color-border);
  font-size: 0.875rem;
  color: var(--color-muted-fg);
}
.row-total strong { color: var(--color-foreground); font-size: 1rem; }
.reno-totals { display: flex; gap: 6px; font-size: 0.8125rem; }

/* Results */
.results-col { position: relative; }
.results-sticky {
  position: sticky;
  top: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-md);
}
.results-sticky h2 { font-size: 1.0625rem; margin-bottom: 16px; }

.metric-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 18px; }
.metric-grid.two-col { grid-template-columns: 1fr 1fr; }
.metric {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.metric-label { font-size: 0.75rem; color: var(--color-muted-fg); font-weight: 600; display: flex; align-items: center; gap: 4px; }
.metric-label em { font-style: normal; cursor: help; opacity: 0.7; }
.metric-value { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; }
.metric-value.negative { color: var(--color-destructive); }
.metric-value.positive { color: var(--color-positive); }

.cashflow-block {
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
  margin-bottom: 18px;
}
.cf-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  font-size: 0.875rem;
}
.cf-row span { color: var(--color-muted-fg); display: flex; align-items: center; gap: 4px; }
.cf-row span em { font-style: normal; cursor: help; opacity: 0.7; }
.cf-row strong { font-size: 0.9375rem; font-weight: 700; }
.cf-row.muted { opacity: 0.85; }
.cf-row.highlight {
  margin-top: 4px;
  padding: 10px 12px;
  background: var(--color-muted);
  border-radius: 8px;
}
.cf-row.highlight strong { font-size: 1.0625rem; color: var(--color-primary); }

.bar-viz { margin-bottom: 18px; }
.bar-viz-label { font-size: 0.75rem; color: var(--color-muted-fg); font-weight: 600; margin-bottom: 8px; }
.stacked-bar {
  display: flex;
  width: 100%;
  height: 14px;
  border-radius: 7px;
  overflow: hidden;
  background: var(--color-muted);
}
.bar-seg { height: 100%; transition: width 300ms ease; }
.bar-expense { background: var(--color-accent); }
.bar-profit { background: var(--color-primary); }
.bar-legend { display: flex; gap: 16px; margin-top: 8px; font-size: 0.75rem; color: var(--color-muted-fg); }
.bar-legend span { display: flex; align-items: center; gap: 6px; }
.swatch { width: 9px; height: 9px; border-radius: 2px; display: inline-block; }
.swatch-expense { background: var(--color-accent); }
.swatch-profit { background: var(--color-primary); }

.disclaimer { font-size: 0.75rem; color: var(--color-muted-fg); line-height: 1.5; margin: 0; padding-top: 4px; border-top: 1px solid var(--color-border); }

.site-footer { display: flex; justify-content: center; padding: 32px 0 16px; }

.coffee-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  padding: 12px 26px;
  border-radius: 999px;
  background: var(--color-primary);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--color-primary) 35%, transparent);
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
  will-change: transform;
}
.coffee-btn:hover {
  transform: scale(1.06);
  background: var(--color-primary-hover);
  box-shadow: 0 0 24px 4px color-mix(in srgb, var(--color-primary) 55%, transparent),
    0 6px 20px color-mix(in srgb, var(--color-primary) 45%, transparent);
}
.coffee-btn:active { transform: scale(0.98); }
.coffee-btn:focus-visible { outline: 2px solid var(--color-ring); outline-offset: 3px; }

.coffee-btn-header {
  font-size: 0.8125rem;
  padding: 8px 16px;
  box-shadow: none;
  margin: 0 auto;
  flex-shrink: 0;
}
.coffee-btn-header:hover {
  box-shadow: 0 0 14px 2px color-mix(in srgb, var(--color-primary) 40%, transparent);
}

@media (max-width: 900px) {
  .results-sticky { position: static; }
}

/* Bond & Transfer Costs */
.bond-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 28px 20px;
  box-shadow: var(--shadow-md);
  max-width: 900px;
  margin: 0 auto;
}
.bond-card h2 { font-size: 1.0625rem; margin-bottom: 18px; }
.bond-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
@media (max-width: 720px) { .bond-grid { grid-template-columns: 1fr; } }

.bond-inputs { display: flex; flex-direction: column; gap: 18px; }
.bond-term-label { display: flex; justify-content: space-between; align-items: baseline; }
.bond-term-label strong { font-weight: 700; color: var(--color-foreground); font-size: 0.9375rem; }

.term-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: var(--color-border);
  cursor: pointer;
  margin-top: 6px;
}
.term-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-background);
  box-shadow: 0 0 0 1px var(--color-primary);
  cursor: pointer;
}
.term-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-background);
  box-shadow: 0 0 0 1px var(--color-primary);
  cursor: pointer;
}
.term-slider::-moz-range-track { height: 4px; border-radius: 999px; background: var(--color-border); }

.bond-results { display: flex; flex-direction: column; gap: 0; }
.bond-results .cf-row strong { font-size: 1.0625rem; }
.bond-results .cf-row:last-of-type { border-bottom: 1px solid var(--color-border); padding-bottom: 16px; margin-bottom: 16px; }

.btn-block { width: 100%; padding: 12px 16px; font-size: 0.9375rem; margin-bottom: 12px; }

.bond-links { display: flex; flex-direction: column; gap: 8px; }
.link-btn {
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  background: none;
  border: none;
  padding: 0;
  text-align: left;
  cursor: pointer;
  text-decoration: none;
}
.link-btn:hover { text-decoration: underline; }
.link-btn:focus-visible { outline: 2px solid var(--color-ring); outline-offset: 2px; }

.bond-breakdown {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}
.bond-breakdown h3 { font-size: 0.875rem; margin: 0 0 8px; color: var(--color-muted-fg); text-transform: uppercase; letter-spacing: 0.02em; }

.bond-info {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--color-muted);
  border-radius: 8px;
  font-size: 0.8125rem;
  color: var(--color-muted-fg);
  line-height: 1.6;
}
.bond-info p { margin: 0; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* Print — show only the active panel's results */
@media print {
  .topbar, .mode-tabs, .site-footer, .coffee-btn-header,
  .panel.active .inputs-col,
  .form-actions { display: none !important; }
  .app { max-width: none; padding: 0; }
  .panel.active { display: block; }
  .results-sticky { position: static; box-shadow: none; border: 1px solid #ccc; }
  .bond-card { box-shadow: none; border: 1px solid #ccc; max-width: none; }
  a[href]::after { content: ""; }
}