:root {
  color-scheme: light;
  --color-ink: #183B3A;
  --color-ink-hover: #102E2D;
  --color-cream: #F7F3EA;
  --color-surface: #FFFFFF;
  --color-coral: #FF7D67;
  --color-coral-hover: #E96B58;
  --color-mint: #DDF2EA;
  --color-success: #277A5D;
  --color-warning: #B97916;
  --color-danger: #C74747;
  --color-text: #172624;
  --color-muted: #687572;
  --color-muted-text: #5A6865;
  --color-border: #DEDCD5;
  --color-soft: #EFEEE8;
  --color-control-border: var(--color-muted);
  --color-focus: #183B3A;
  --color-overlay: rgb(23 38 36 / 58%);
  --color-shadow: rgb(24 59 58 / 9%);
  --color-white-muted: rgb(255 255 255 / 78%);
  --color-ink-soft: rgb(24 59 58 / 8%);
  --color-coral-soft: rgb(255 125 103 / 14%);
  --color-warning-soft: rgb(185 121 22 / 12%);
  --color-danger-soft: rgb(199 71 71 / 10%);

  --person-miguel: var(--color-ink);
  --person-alex: var(--color-coral-hover);
  --person-couple: var(--color-success);

  --font-sans: Inter, Manrope, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  --text-xs: .875rem;
  --text-sm: 1rem;
  --text-card-title: clamp(1.125rem, 1vw + .9rem, 1.25rem);
  --text-page-title: clamp(1.75rem, 2.3vw, 2.125rem);
  --text-money: clamp(2.25rem, 7vw, 3.5rem);

  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;

  --radius-sm: .75rem;
  --radius-button: .9375rem;
  --radius-card: 1rem;
  --radius-container: 1.375rem;
  --shadow-card: 0 .5rem 1.75rem var(--color-shadow);
  --motion-fast: 140ms;
  --motion-normal: 180ms;
  --sidebar-width: 15rem;
  --content-max: 82rem;
}

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

html {
  min-width: 20rem;
  background: var(--color-cream);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-cream);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: var(--color-ink); text-underline-offset: .2em; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p { margin-block-start: 0; }
h1 { margin-block-end: var(--space-4); font-size: var(--text-page-title); line-height: 1.15; letter-spacing: -.03em; }
h2 { margin-block-end: var(--space-3); font-size: var(--text-card-title); line-height: 1.25; letter-spacing: -.015em; }
h3 { margin-block-end: var(--space-2); font-size: 1rem; }
strong, .money, [data-money] { font-variant-numeric: tabular-nums; }

:focus-visible {
  outline: .1875rem solid var(--color-focus);
  outline-offset: .1875rem;
}

.skip-link {
  position: fixed;
  z-index: 9999;
  inset: var(--space-3) auto auto var(--space-3);
  transform: translateY(-180%);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink);
  font-weight: 800;
}
.skip-link:focus { transform: translateY(0); }

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

.stack { display: grid; gap: var(--space-4); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }
.grid-2, .grid-3, .grid-4 { display: grid; gap: var(--space-4); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.muted { color: var(--color-muted-text); }
.eyebrow {
  margin-block-end: var(--space-1);
  color: var(--color-ink);
  font-size: var(--text-xs);
  font-weight: 750;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.card,
.panel,
.money-card {
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  box-shadow: 0 .125rem .75rem var(--color-shadow);
}
.card, .panel { padding: clamp(var(--space-4), 2.2vw, var(--space-6)); }
.money-card { padding: clamp(var(--space-5, 1.25rem), 3vw, var(--space-8)); }
.card--soft { background: var(--color-soft); box-shadow: none; }
.card--mint { background: var(--color-mint); border-color: transparent; box-shadow: none; }
.card--ink { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-surface); }
.card--coral { background: var(--color-coral-soft); border-color: transparent; box-shadow: none; }

.button,
button.button {
  min-height: 3.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: .75rem 1.125rem;
  border: 1px solid transparent;
  border-radius: var(--radius-button);
  background: var(--color-ink);
  color: var(--color-surface);
  font-weight: 750;
  line-height: 1.15;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--motion-fast), border-color var(--motion-fast), transform var(--motion-fast);
}
.button:hover { background: var(--color-ink-hover); }
.button:active { transform: translateY(.0625rem); }
.button--primary, .button.primary { background: var(--color-coral); color: var(--color-text); }
.button--primary:hover, .button.primary:hover { background: var(--color-coral-hover); }
.button--secondary, .button.soft {
  border-color: var(--color-control-border);
  background: var(--color-surface);
  color: var(--color-ink);
}
.button--secondary:hover, .button.soft:hover { border-color: var(--color-ink); background: var(--color-soft); }
.button--ghost, .button.light { background: var(--color-ink-soft); color: inherit; }
.card--ink .button--ghost, .card--ink .button.light { background: var(--color-surface); color: var(--color-ink); }
.button--danger { border-color: var(--color-danger); background: var(--color-surface); color: var(--color-danger); }
.button--small { min-height: 3rem; padding-inline: var(--space-4); }
.button--wide, .button.wide { width: 100%; }
.button[disabled] { cursor: not-allowed; opacity: .55; }

.icon-button {
  width: 3rem;
  min-width: 3rem;
  height: 3rem;
  display: inline-grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--color-control-border);
  border-radius: var(--radius-button);
  background: var(--color-surface);
  color: var(--color-ink);
  cursor: pointer;
}
.icon-button svg, .button svg { width: 1.25rem; height: 1.25rem; }

label, .form-field { display: grid; gap: var(--space-2); color: var(--color-text); font-weight: 700; }
input, select, textarea {
  width: 100%;
  min-height: 3.25rem;
  padding: .75rem .875rem;
  border: 1px solid var(--color-control-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 500;
}
textarea { min-height: 6.5rem; resize: vertical; }
input:hover, select:hover, textarea:hover { border-color: var(--color-muted); }
input:focus, select:focus, textarea:focus { border-color: var(--color-ink); outline: .1875rem solid var(--color-ink); outline-offset: .125rem; }
input::placeholder, textarea::placeholder { color: var(--color-muted-text); opacity: 1; }
.field-hint { color: var(--color-muted-text); font-size: var(--text-xs); font-weight: 500; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
.form-grid .span-2 { grid-column: 1 / -1; }
.check {
  min-height: 3rem;
  grid-template-columns: 1.5rem 1fr;
  align-items: center;
  gap: var(--space-3);
}
.check input { width: 1.5rem; min-height: 1.5rem; accent-color: var(--color-ink); }

.segmented {
  display: inline-grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(max-content, 1fr);
  padding: var(--space-1);
  border: 1px solid var(--color-control-border);
  border-radius: var(--radius-button);
  background: var(--color-soft);
}
.segmented button,
.segmented a {
  min-height: 3rem;
  display: grid;
  place-items: center;
  padding: .5rem .875rem;
  border: 0;
  border-radius: calc(var(--radius-button) - .25rem);
  background: transparent;
  color: var(--color-text);
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
}
.segmented .active,
.segmented [aria-pressed="true"] { background: var(--color-surface); color: var(--color-ink); box-shadow: 0 .125rem .5rem var(--color-shadow); }

.person-badge,
.owner,
.status-badge,
.status {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  min-height: 1.75rem;
  padding: .25rem .625rem;
  border-radius: 999px;
  background: var(--color-soft);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-weight: 750;
  line-height: 1.15;
}
.owner-miguel { background: var(--color-ink-soft); color: var(--person-miguel); }
.owner-alex { background: var(--color-coral-soft); color: var(--color-text); }
.owner-couple { background: var(--color-mint); color: var(--color-text); }
.status-badge--paid, .status.paid { background: var(--color-mint); color: var(--color-text); }
.status-badge--due { background: var(--color-warning-soft); color: var(--color-text); }
.status-badge--forecast { background: var(--color-soft); color: var(--color-text); }
.status-badge--danger { background: var(--color-danger-soft); color: var(--color-text); }

.list-item,
.ledger-item {
  min-width: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-block-end: 1px solid var(--color-border);
}
.list-item:last-child, .ledger-item:last-child { border-block-end: 0; }
.list-item__body, .ledger-item > div { min-width: 0; }
.list-item small, .ledger-item small { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-1); color: var(--color-muted-text); }
.list-item__amount, .ledger-item .amount { text-align: end; }
.list-item__amount a, .ledger-item .amount a { display: block; font-size: var(--text-xs); }

.paid-toggle {
  width: 3rem;
  height: 3rem;
  display: inline-grid;
  place-items: center;
  padding: 0;
  border: 2px solid var(--color-warning);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-warning);
  font-size: 1.25rem;
  font-weight: 900;
  cursor: pointer;
}
.paid-toggle.is-paid { border-color: var(--color-success); background: var(--color-success); color: var(--color-surface); }

.empty-state,
.empty {
  padding: var(--space-8) var(--space-4);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-card);
  color: var(--color-text);
  text-align: center;
}

.progress,
.annual-card > div {
  height: .625rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--color-soft);
}
.progress__bar,
.annual-card i {
  display: block;
  width: var(--progress, 0%);
  height: 100%;
  border-radius: inherit;
  background: var(--color-success);
}

.toast-region {
  position: fixed;
  z-index: 1000;
  inset: auto var(--space-4) calc(6.5rem + env(safe-area-inset-bottom)) auto;
  display: grid;
  gap: var(--space-2);
  pointer-events: none;
}
.toast {
  max-width: min(25rem, calc(100vw - 2rem));
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-card);
  background: var(--color-ink);
  color: var(--color-surface);
  box-shadow: var(--shadow-card);
  pointer-events: auto;
}
.toast button { min-height: 3rem; border: 0; background: transparent; color: var(--color-surface); font-weight: 800; text-decoration: underline; cursor: pointer; }

.modal,
.bottom-sheet {
  width: min(42rem, calc(100vw - 2rem));
  max-height: min(52rem, calc(100dvh - 2rem));
  margin: auto;
  padding: 0;
  overflow: auto;
  border: 0;
  border-radius: var(--radius-container);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-card);
}
.modal::backdrop, .bottom-sheet::backdrop { background: var(--color-overlay); }
.modal__body, .bottom-sheet__body { padding: var(--space-6); }

.details-panel,
.inline-details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}
.details-panel > summary,
.inline-details > summary,
.form-panel > summary {
  min-height: 3.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4);
  color: var(--color-ink);
  font-weight: 800;
  cursor: pointer;
}
.details-panel > :not(summary), .inline-details > :not(summary) { margin: 0 var(--space-4) var(--space-4); }

.table-scroll { width: 100%; overflow: auto; overscroll-behavior-inline: contain; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: var(--space-3); border-block-end: 1px solid var(--color-border); text-align: start; vertical-align: middle; }
th { color: var(--color-muted-text); font-size: var(--text-xs); font-weight: 800; }
td:not(:first-child), th:not(:first-child) { text-align: end; }
tbody tr:nth-child(even) { background: var(--color-ink-soft); }

.flash,
.form-error,
.security-banner {
  max-width: var(--content-max);
  margin: var(--space-3) auto;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 700;
}
.flash-success { border-inline-start: .25rem solid var(--color-success); background: var(--color-mint); color: var(--color-text); }
.flash-error, .form-error { border-inline-start: .25rem solid var(--color-danger); background: var(--color-danger-soft); color: var(--color-text); }
.security-banner { display: block; border-inline-start: .25rem solid var(--color-warning); background: var(--color-warning-soft); color: var(--color-text); }

@media (max-width: 47.99rem) {
  .grid-2, .grid-3, .grid-4, .form-grid { grid-template-columns: 1fr; }
  .form-grid .span-2 { grid-column: auto; }
  .segmented { width: 100%; overflow-x: auto; }
  .toast-region { inset-inline: var(--space-3); }
  .bottom-sheet { width: 100%; max-height: calc(100dvh - 3rem); margin-block-end: 0; border-radius: var(--radius-container) var(--radius-container) 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}