/* FlatSignal dashboard — tokens + styles per docs/DESIGN.md (binding brief). */

:root {
  --color-primary: #0f766e;
  --color-on-primary: #ffffff;
  --color-on-accent: #ffffff;
  --color-accent: #0369a1;
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-fg: #1c1917;
  --color-fg-muted: #57534e;
  --color-border: #e7e5e4;
  --color-destructive: #dc2626;
  --score-strong: #15803d;
  --score-good: #0f766e;
  --score-mid: #b45309;
  --score-weak: #78716c;
  --warn: #b45309;
  --warn-bg: #fef3c7;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --radius-card: 12px;
  --radius-chip: 999px;
  --shadow-card: 0 1px 3px rgb(0 0 0 / 0.08);
  --dur-fast: 150ms;
  --dur-base: 250ms;
  --font-head: "Outfit", system-ui, sans-serif;
  --font-body: "Work Sans", system-ui, sans-serif;
  --header-h: 116px;
}

[data-theme="dark"] {
  --color-bg: #0c0a09;
  --color-surface: #1c1917;
  --color-fg: #fafaf9;
  --color-fg-muted: #a8a29e;
  --color-border: #292524;
  --color-primary: #2dd4bf;
  --color-accent: #38bdf8;
  /* Dark fills are light mint/sky — put dark ink on them for AA contrast. */
  --color-on-primary: #0c0a09;
  --color-on-accent: #0c0a09;
  --score-strong: #4ade80;
  --score-good: #2dd4bf;
  --score-mid: #fbbf24;
  --score-weak: #a8a29e;
  --warn: #fbbf24;
  --warn-bg: #3b2f14;
  --shadow-card: none;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-fg);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

body.detail-open {
  overflow: hidden;
}

h1,
h2,
h3 {
  font-family: var(--font-head);
  line-height: 1.2;
  margin: 0;
}

a {
  color: var(--color-accent);
}

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

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -60px;
  z-index: 100;
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--radius-chip);
  transition: top var(--dur-fast) ease-out;
}
.skip-link:focus {
  top: var(--space-2);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

/* --------------------------------------------------------------------------
   Header + controls (sticky)
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  padding-top: env(safe-area-inset-top);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-3) var(--space-2);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.brand__mark {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
}
.brand__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.site-header__right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.freshness {
  font-size: 12px;
  color: var(--color-fg-muted);
}
.fresh {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.fresh--stale {
  color: var(--warn);
  font-weight: 500;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-chip);
  background: var(--color-surface);
  color: var(--color-fg);
  cursor: pointer;
  touch-action: manipulation;
  transition: background var(--dur-fast) ease-out;
}
.icon-btn:hover {
  background: var(--color-bg);
}

.controls-wrap {
  border-top: 1px solid transparent;
}
.controls {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-3) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.controls__row {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 2px;
}
.controls__row::-webkit-scrollbar {
  display: none;
}
.controls__row--tools {
  overflow: visible;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.chip {
  flex: 0 0 auto;
  min-height: 44px;
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-chip);
  background: var(--color-surface);
  color: var(--color-fg);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  touch-action: manipulation;
  transition:
    background var(--dur-fast) ease-out,
    border-color var(--dur-fast) ease-out;
}
.chip[aria-pressed="true"] {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
.chip:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.control {
  display: inline-flex;
  flex-direction: column;
  gap: var(--space-1);
  font-size: 12px;
  color: var(--color-fg-muted);
}
.control__label {
  font-weight: 500;
}
.control--slider {
  flex: 1 1 200px;
  min-width: 160px;
}
.select {
  min-height: 44px;
  padding: 0 var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-fg);
  font-family: var(--font-body);
  font-size: 14px;
}
.slider {
  width: 100%;
  height: 44px;
  accent-color: var(--color-primary);
  touch-action: manipulation;
}
#min-out {
  font-variant-numeric: tabular-nums;
  color: var(--color-fg);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Fixture banner
   -------------------------------------------------------------------------- */

.fixture-banner {
  background: var(--warn-bg);
  color: var(--warn);
  text-align: center;
  font-size: 13px;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   Main + KPI strip
   -------------------------------------------------------------------------- */

.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-3) var(--space-5);
}

.kpis {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.kpi {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
}
.kpi__icon {
  color: var(--color-primary);
}
.kpi__value {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  font-variant-numeric: tabular-nums;
}
.kpi__label {
  font-size: 12px;
  color: var(--color-fg-muted);
}

/* --------------------------------------------------------------------------
   Area sections
   -------------------------------------------------------------------------- */

.area {
  margin-bottom: var(--space-4);
}
.area__head {
  margin: 0 0 var(--space-3);
}
.area__toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  min-height: 44px;
  padding: var(--space-2) 0;
  border: 0;
  background: none;
  color: var(--color-fg);
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
}
.area__chevron {
  display: inline-flex;
  color: var(--color-fg-muted);
  transition: transform var(--dur-fast) ease-out;
}
.area__chevron.is-collapsed {
  transform: rotate(-90deg);
}
.area__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
}
.area__meta {
  font-size: 12px;
  color: var(--color-fg-muted);
  font-weight: 400;
}

.area__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   Listing card
   -------------------------------------------------------------------------- */

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  cursor: pointer;
  touch-action: manipulation;
  transition: transform var(--dur-fast)
    ease-out; /* transform-only per DESIGN */
  animation: card-in var(--dur-base) ease-out both;
}
.card:hover {
  transform: translateY(-2px);
}
.card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.card__media {
  position: relative;
  aspect-ratio: 3 / 2;
  background: var(--color-bg);
}
.card__img,
.card__placeholder {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: hsl(var(--ph-hue, 200) 35% 88%);
  color: hsl(var(--ph-hue, 200) 45% 32%);
}
[data-theme="dark"] .card__placeholder {
  background: hsl(var(--ph-hue, 200) 25% 22%);
  color: hsl(var(--ph-hue, 200) 40% 72%);
}
.card__mono {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 40px;
}

.score {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  padding: 0 var(--space-2);
  border-radius: 12px;
  background: var(--color-surface);
  border: 2px solid var(--score-weak);
  box-shadow: var(--shadow-card);
}
.score__num {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 32px; /* the product's signature element (DESIGN typography) */
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-fg);
}
.score--strong {
  border-color: var(--score-strong);
}
.score--strong .score__num {
  color: var(--score-strong);
}
.score--good {
  border-color: var(--score-good);
}
.score--good .score__num {
  color: var(--score-good);
}
.score--mid {
  border-color: var(--score-mid);
}
.score--mid .score__num {
  color: var(--score-mid);
}
.score--weak {
  border-color: var(--score-weak);
}
.score--weak .score__num {
  color: var(--score-weak);
}

.chip-new {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  padding: 2px var(--space-2);
  border-radius: var(--radius-chip);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
}
.card__topline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
}
.card__rent {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  font-variant-numeric: tabular-nums;
}
.tag {
  font-size: 11px;
  padding: 2px var(--space-2);
  border-radius: var(--radius-chip);
  border: 1px solid var(--color-border);
}
.tag--muted {
  color: var(--color-fg-muted);
}
.card__title {
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-body);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__meta {
  margin: 0;
  font-size: 13px;
  color: var(--color-fg-muted);
}
.card__reasons {
  margin: 0;
  font-size: 13px;
  color: var(--color-fg-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 1.5em;
}
.card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: var(--space-1);
}
.card__fresh {
  font-size: 12px;
  color: var(--color-fg-muted);
}
.chip-warn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: var(--radius-chip);
  background: var(--warn-bg);
  color: var(--warn);
  font-size: 11px;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   States (empty / error / skeleton)
   -------------------------------------------------------------------------- */

.state {
  text-align: center;
  max-width: 420px;
  margin: var(--space-5) auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}
.state__icon {
  display: inline-flex;
  padding: var(--space-3);
  border-radius: var(--radius-chip);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
}
.state__icon--warn {
  color: var(--warn);
}
.state__title {
  font-size: 18px;
}
.state__body {
  margin: 0;
  color: var(--color-fg-muted);
  font-size: 14px;
}
.state code {
  font-family: ui-monospace, monospace;
  background: var(--color-bg);
  padding: 1px 6px;
  border-radius: 6px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 var(--space-4);
  border: 0;
  border-radius: var(--radius-chip);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  touch-action: manipulation;
}

.card--skeleton {
  pointer-events: none;
  animation: none;
}
.sk {
  background: var(--color-border);
  border-radius: 6px;
  animation: pulse 1.4s ease-in-out infinite;
}
.sk--media {
  aspect-ratio: 3 / 2;
  border-radius: 0;
}
.sk--line {
  height: 12px;
  margin: var(--space-2) var(--space-3);
}
.sk--line.short {
  width: 50%;
}

/* --------------------------------------------------------------------------
   Detail overlay
   -------------------------------------------------------------------------- */

.detail {
  position: fixed;
  inset: 0;
  z-index: 50;
}
.detail__backdrop {
  position: absolute;
  inset: 0;
  background: rgb(0 0 0 / 0.5);
  animation: fade-in var(--dur-base) ease-out both;
}
.detail__panel {
  position: absolute;
  inset: 0;
  background: var(--color-surface);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: slide-up var(--dur-base) ease-out both;
}
.detail__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  padding-top: max(var(--space-2), env(safe-area-inset-top));
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-surface);
}
.detail__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-height: 44px;
  padding: 0 var(--space-2);
  border: 0;
  background: none;
  color: var(--color-fg);
  font-family: var(--font-body);
  font-size: 15px;
  cursor: pointer;
}
.detail__scroll {
  overflow-y: auto;
  padding: var(--space-3) var(--space-3) var(--space-5);
  -webkit-overflow-scrolling: touch;
}

.detail__gallery {
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-bottom: var(--space-3);
  aspect-ratio: 3 / 2;
  background: var(--color-bg);
  position: relative;
}
.detail__gallery--scroll {
  display: flex;
  aspect-ratio: auto;
  gap: var(--space-2);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
}
.detail__img {
  flex: 0 0 100%;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  scroll-snap-align: start;
  border-radius: var(--radius-card);
}
.detail__gallery .card__placeholder {
  position: absolute;
}

.detail__head {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  margin-bottom: var(--space-2);
}
.score--lg {
  position: static;
  min-width: 72px;
  height: 72px;
  border-radius: 16px;
}
.score--lg .score__num {
  font-size: 40px;
}
.detail__band {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-fg-muted);
}
.detail__title {
  font-size: 24px;
  margin: 2px 0;
}
.detail__addr {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  font-size: 14px;
  color: var(--color-fg-muted);
}
.detail__rent {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  font-variant-numeric: tabular-nums;
  margin: 0 0 var(--space-4);
}
.detail__h {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-fg-muted);
  margin: var(--space-4) 0 var(--space-2);
}

.facts {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.facts__row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
}
.facts__row dt {
  color: var(--color-fg-muted);
  font-size: 13px;
}
.facts__row dd {
  margin: 0;
  font-weight: 500;
  font-size: 14px;
  text-align: right;
}

.explain {
  margin: 0 0 var(--space-3);
  padding-left: var(--space-4);
  font-size: 14px;
}
.explain li {
  margin-bottom: var(--space-1);
}

.bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.bar__head {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  margin-bottom: 2px;
}
.bar__nums {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.bar__weight {
  color: var(--color-fg-muted);
  font-weight: 400;
}
.bar__track {
  height: 8px;
  border-radius: var(--radius-chip);
  background: var(--color-border);
  overflow: hidden;
}
.bar__fill {
  height: 100%;
  border-radius: var(--radius-chip);
  background: var(--color-primary);
}

.penalties {
  margin-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.penalty {
  border: 1px solid var(--warn);
  border-radius: var(--radius-card);
  padding: var(--space-2) var(--space-3);
  background: var(--warn-bg);
}
.penalty__head {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-1);
  color: var(--warn);
  font-weight: 600;
  font-size: 13px;
}
.penalty__list {
  margin: 0;
  padding-left: var(--space-4);
  font-size: 13px;
  color: var(--color-fg);
}

.detail__prov {
  font-size: 13px;
  color: var(--color-fg-muted);
  margin: 0;
}

.dupes {
  margin: 0;
  padding-left: var(--space-4);
  font-size: 14px;
}
.dupe__seen {
  color: var(--color-fg-muted);
  font-size: 12px;
  margin-left: var(--space-2);
}

.cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 52px;
  margin-top: var(--space-4);
  border-radius: var(--radius-card);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  touch-action: manipulation;
}
.cta--disabled {
  background: var(--color-border);
  color: var(--color-fg-muted);
  cursor: not-allowed;
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes slide-up {
  from {
    transform: translateY(3%);
    opacity: 0.6;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.area__grid .card:nth-child(2) {
  animation-delay: 40ms;
}
.area__grid .card:nth-child(3) {
  animation-delay: 80ms;
}
.area__grid .card:nth-child(4) {
  animation-delay: 120ms;
}
.area__grid .card:nth-child(n+5) {
  animation-delay: 160ms;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (min-width: 640px) {
  .kpis {
    grid-template-columns: repeat(4, 1fr);
  }
  .area__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .area__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .detail__panel {
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%);
    width: min(720px, 92vw);
    height: min(88vh, 900px);
    border-radius: var(--radius-card);
    border: 1px solid var(--color-border);
    animation: pop-in var(--dur-base) ease-out both;
  }
}

@keyframes pop-in {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}