/* senec-monitor — design tokens + components.
   Editorial instrument panel. Type-led, hairline-bounded.
   Light-first; dark via [data-theme='dark'] or prefers-color-scheme:dark. */

@font-face {
  font-family: 'Inter'; font-style: normal; font-weight: 400; font-display: swap;
  src: url('../fonts/inter/Inter-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter'; font-style: normal; font-weight: 500; font-display: swap;
  src: url('../fonts/inter/Inter-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter'; font-style: normal; font-weight: 600; font-display: swap;
  src: url('../fonts/inter/Inter-SemiBold.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono'; font-style: normal; font-weight: 400; font-display: swap;
  src: url('../fonts/jetbrains-mono/JetBrainsMono-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono'; font-style: normal; font-weight: 500; font-display: swap;
  src: url('../fonts/jetbrains-mono/JetBrainsMono-Medium.woff2') format('woff2');
}

:root {
  /* Light is the default. Dark applies via [data-theme='dark'] or
     prefers-color-scheme:dark when no explicit theme is set. */
  color-scheme: light dark;

  --surface-0: oklch(0.985 0.003 80);
  --surface-1: oklch(0.97  0.004 80);
  --surface-2: oklch(0.95  0.006 80);

  --text-strong:  oklch(0.18 0.008 80);
  --text-default: oklch(0.28 0.008 80);
  --text-muted:   oklch(0.50 0.010 80);
  --text-faint:   oklch(0.65 0.010 80);

  --line:        oklch(0.78 0.008 80 / 0.7);
  --line-strong: oklch(0.62 0.008 80 / 0.85);

  --c-pv:            oklch(0.62 0.110 78);
  --c-house:         oklch(0.50 0.030 240);
  --c-grid-import:   oklch(0.50 0.090 32);
  --c-grid-export:   oklch(0.52 0.065 195);
  --c-bat-charge:    oklch(0.50 0.075 240);
  --c-bat-discharge: oklch(0.54 0.060 332);

  --c-ok:    oklch(0.54 0.065 148);
  --c-warn:  oklch(0.62 0.110 78);
  --c-error: oklch(0.50 0.090 32);

  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  --container: 1200px;
}

:root[data-theme='dark'] {
  color-scheme: dark;

  --surface-0: oklch(0.17 0.005 80);
  --surface-1: oklch(0.21 0.006 80);
  --surface-2: oklch(0.25 0.008 80);

  --text-strong:  oklch(0.96 0.005 80);
  --text-default: oklch(0.88 0.008 80);
  --text-muted:   oklch(0.62 0.012 80);
  --text-faint:   oklch(0.45 0.012 80);

  --line:        oklch(0.32 0.008 80 / 0.55);
  --line-strong: oklch(0.42 0.008 80 / 0.7);

  --c-pv:            oklch(0.74 0.095 78);
  --c-house:         oklch(0.66 0.022 240);
  --c-grid-import:   oklch(0.60 0.080 32);
  --c-grid-export:   oklch(0.66 0.055 195);
  --c-bat-charge:    oklch(0.62 0.060 240);
  --c-bat-discharge: oklch(0.64 0.050 332);

  --c-ok:    oklch(0.66 0.055 148);
  --c-warn:  oklch(0.74 0.095 78);
  --c-error: oklch(0.60 0.080 32);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --surface-0: oklch(0.17 0.005 80);
    --surface-1: oklch(0.21 0.006 80);
    --surface-2: oklch(0.25 0.008 80);
    --text-strong:  oklch(0.96 0.005 80);
    --text-default: oklch(0.88 0.008 80);
    --text-muted:   oklch(0.62 0.012 80);
    --text-faint:   oklch(0.45 0.012 80);
    --line:        oklch(0.32 0.008 80 / 0.55);
    --line-strong: oklch(0.42 0.008 80 / 0.7);
    --c-pv:            oklch(0.74 0.095 78);
    --c-house:         oklch(0.66 0.022 240);
    --c-grid-import:   oklch(0.60 0.080 32);
    --c-grid-export:   oklch(0.66 0.055 195);
    --c-bat-charge:    oklch(0.62 0.060 240);
    --c-bat-discharge: oklch(0.64 0.050 332);
    --c-ok:    oklch(0.66 0.055 148);
    --c-warn:  oklch(0.74 0.095 78);
    --c-error: oklch(0.60 0.080 32);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--surface-0);
  color: var(--text-default);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  font-feature-settings: 'cv11', 'ss01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--text-strong);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms ease, color 120ms ease;
}
a:hover { border-bottom-color: currentColor; }

button {
  font: inherit;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text-default);
  padding: 8px 14px;
  cursor: pointer;
  border-radius: 0;
  transition: border-color 120ms ease, color 120ms ease, background 120ms ease;
}
button:hover { color: var(--text-strong); border-color: var(--text-muted); }
button:focus-visible { outline: 2px solid color-mix(in oklab, var(--c-pv) 80%, transparent); outline-offset: 2px; }

input[type='number'], input[type='text'] {
  font: inherit;
  font-family: var(--font-mono);
  background: var(--surface-1);
  border: 1px solid var(--line);
  color: var(--text-strong);
  padding: 10px 12px;
  width: 100%;
  border-radius: 0;
}
input[type='number']:focus, input[type='text']:focus {
  outline: none;
  border-color: var(--text-muted);
}

.app-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in oklab, var(--surface-0) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.app-header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: baseline;
  gap: 32px;
}
.app-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-strong);
  font-weight: 600;
}
.app-brand:hover { border-bottom-color: transparent; }
.app-brand__sep { color: var(--text-faint); letter-spacing: 0; font-weight: 400; }
.app-brand__sub { color: var(--text-muted); letter-spacing: 0.10em; font-weight: 400; text-transform: lowercase; }

.app-nav {
  display: flex;
  gap: 24px;
  margin-left: auto;
  align-items: baseline;
}
.app-nav a {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: none;
  padding-bottom: 2px;
}
.app-nav a:hover { color: var(--text-strong); border-bottom-color: transparent; }
.app-nav a[aria-current='page'] {
  color: var(--text-strong);
  border-bottom: 1px solid var(--text-strong);
}

.theme-switch {
  margin-left: 16px;
  display: inline-flex;
  border: 1px solid var(--line-strong);
}
.theme-switch__opt {
  border: none;
  border-right: 1px solid var(--line-strong);
  padding: 5px 10px;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  background: transparent;
  font-family: var(--font-mono);
  cursor: pointer;
}
.theme-switch__opt:last-child { border-right: none; }
.theme-switch__opt:hover { color: var(--text-strong); }
.theme-switch__opt.is-active {
  color: var(--text-strong);
  background: var(--surface-2);
}
@media (max-width: 560px) {
  .theme-switch__opt { padding: 5px 8px; font-size: 0.68rem; }
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.app-footer {
  border-top: 1px solid var(--line);
  padding: 14px 24px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
}
.app-footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.conn { display: inline-flex; align-items: center; gap: 8px; }
.conn::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-faint);
  transition: background 200ms ease, box-shadow 200ms ease;
}
.conn[data-state='live']::before {
  background: var(--c-ok);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--c-ok) 22%, transparent);
}
.conn[data-state='reconnecting']::before { background: var(--c-warn); }
.conn[data-state='offline']::before { background: var(--c-error); }

.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.dash { color: var(--text-faint); }

.page-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.page-head h1 {
  font-size: 1.5rem;
  font-weight: 500;
  margin: 0;
  letter-spacing: -0.005em;
  color: var(--text-strong);
}
.page-head__meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.state-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  border-top: 1px solid var(--line);
  background: var(--surface-1);
}
.state-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-default);
}
.state-badge::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-ok);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--c-ok) 22%, transparent);
}
.state-badge[data-status='warn']::before  { background: var(--c-warn);  box-shadow: 0 0 0 4px color-mix(in oklab, var(--c-warn) 22%, transparent); }
.state-badge[data-status='error']::before { background: var(--c-error); box-shadow: 0 0 0 4px color-mix(in oklab, var(--c-error) 22%, transparent); }
.state-badge__code {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-faint);
  margin-left: 6px;
}
.state-meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
}

.tiles {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-bottom: 1px solid var(--line);
}
.tile {
  padding: 24px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 168px;
  position: relative;
  /* Tile is now an <a>; keep the typography and remove the link chrome. */
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: background 120ms ease;
}
.tile:hover { background: var(--surface-1); border-bottom-color: transparent; }
.tile:focus-visible { outline: 2px solid var(--text-strong); outline-offset: -2px; }
.tile:last-child { border-right: none; }

.tile__label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.tile__name {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.tile__as-of {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

.tile__value {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.tile__number {
  font-size: 2.5rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  font-weight: 400;
}
.tile__unit {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.tile__direction {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--tile-c, var(--text-muted));
  margin-top: auto;
}
.tile__arrow {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--tile-c, var(--text-muted));
}

.tile[data-metric='pv_power_w']      { --tile-c: var(--c-pv); }
.tile[data-metric='house_power_w']   { --tile-c: var(--c-house); }
.tile[data-metric='battery_soc_pct'] { --tile-c: var(--c-bat-charge); }
.tile[data-flow='import']    { --tile-c: var(--c-grid-import); }
.tile[data-flow='export']    { --tile-c: var(--c-grid-export); }
.tile[data-flow='charge']    { --tile-c: var(--c-bat-charge); }
.tile[data-flow='discharge'] { --tile-c: var(--c-bat-discharge); }

.soc-bar {
  width: 100%;
  height: 3px;
  background: var(--line);
  position: relative;
  margin-top: 8px;
}
.soc-bar__fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--c-bat-charge);
  transition: width 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes value-flash {
  0%   { color: var(--text-default); }
  100% { color: var(--text-strong); }
}
.tile__number.is-fresh { animation: value-flash 600ms ease-out; }

/* State gauges. Live percentage indicators that complement the power
   tiles — driven by the `senec:snapshot` event, so they tick along with
   the WebSocket. Three columns by default; collapse to one column on
   narrow viewports to match the tile grid. */
.gauges {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}
.gauge {
  padding: 16px 24px 20px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 168px;
}
.gauge:last-child { border-right: none; }
.gauge__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.gauge__label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.gauge__chart {
  flex: 1;
  min-height: 124px;
  width: 100%;
}
@media (max-width: 1100px) {
  .gauges { grid-template-columns: repeat(2, 1fr); }
  .gauge { border-bottom: 1px solid var(--line); }
  .gauge:nth-child(2n) { border-right: none; }
  .gauge:nth-last-child(-n+2) { border-bottom: none; }
}
@media (max-width: 720px) {
  .gauges { grid-template-columns: 1fr; }
  .gauge { border-right: none; border-bottom: 1px solid var(--line); }
  .gauge:last-child { border-bottom: none; }
}

/* KPI summary card. Used on / and /summary, populated by summary.js.
   The link variants are gone — the dedicated /summary nav entry is the
   way to drill into the trend view. */
.summary-card {
  display: block;
  margin-top: 0;
  border: 1px solid var(--line);
  padding: 0;
  background: var(--surface-0);
}
.summary-card--static { cursor: default; }
.summary-card__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 14px;
}
.summary-card__title {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.summary-card__range { font-size: 0.72rem; color: var(--text-faint); flex: 1; }
.summary-card__more {
  font-size: 0.74rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.summary-card__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--line);
}
/* 11-cell variant for the rich KPI block. Wraps to 6 + 5 on desktop;
   responsive rules below collapse further on narrow viewports. */
.summary-card__grid--wide {
  grid-template-columns: repeat(6, 1fr);
}
@media (max-width: 1100px) {
  .summary-card__grid--wide { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 720px) {
  .summary-card__grid--wide { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 480px) {
  .summary-card__grid--wide { grid-template-columns: repeat(2, 1fr); }
}
.kpi {
  background: var(--surface-0);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.kpi__label {
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.kpi__value {
  font-size: 1.24rem;
  font-weight: 500;
  color: var(--text-strong);
  font-variant-numeric: tabular-nums;
}

/* Series toggle chips above the composite overview chart. */
.series-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 12px;
}
.series-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: color 120ms ease, background 120ms ease;
}
.series-chip:hover { color: var(--text-strong); }
.series-chip__swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: currentColor;
}
.series-chip:not(.is-active) {
  color: var(--text-faint);
  background: transparent;
}
.series-chip:not(.is-active) .series-chip__swatch { opacity: 0.25; }
.series-chip.is-active { color: var(--text-strong); background: var(--surface-1); }

/* Calendar heatmap on /summary. */
.heatmap {
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(7, 14px);
  gap: 2px;
  margin: 16px 0;
  font-family: var(--font-mono);
}
.heatmap__cell {
  width: 14px;
  height: 14px;
  background: var(--surface-2);
  border: 1px solid transparent;
  display: block;
}
.heatmap__cell[data-empty='true'] { background: transparent; border-color: var(--line); }

/* One range strip per page; both KPIs and chart honour it. */
.page-range {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 32px 0 18px;
  flex-wrap: wrap;
}
.page-range__label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.page-range__window {
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-left: auto;
}

.summary-section { margin-top: 28px; }

.chart-section { margin-top: 48px; }
.chart-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 16px;
}
.chart-section__title {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.range-tabs {
  display: inline-flex;
  border: 1px solid var(--line);
}
.range-tabs button {
  border: none;
  border-right: 1px solid var(--line);
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  background: transparent;
}
.range-tabs button:last-child { border-right: none; }
.range-tabs button[aria-pressed='true'] {
  color: var(--text-strong);
  background: var(--surface-1);
}
.chart {
  width: 100%;
  height: 320px;
  background: transparent;
}
.chart--full { height: 480px; }

.metric-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.metric-switcher a {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: none;
  padding-bottom: 2px;
}
.metric-switcher a:hover { color: var(--text-strong); border-bottom: none; }
.metric-switcher a[aria-current='page'] {
  color: var(--text-strong);
  border-bottom: 1px solid var(--text-strong);
}

.settings-form {
  max-width: 540px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 28px 0;
}
.field {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 20px;
}
.field label {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.field .hint {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-faint);
  line-height: 1.5;
}
.form-actions { display: flex; align-items: center; gap: 14px; }
.form-status {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
}
.form-status[data-state='ok']    { color: var(--c-ok); }
.form-status[data-state='error'] { color: var(--c-error); }

/* alerts page */
.alerts-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  margin-bottom: 28px;
}
.alerts-table th,
.alerts-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.alerts-table th {
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
  border-bottom: 1px solid var(--line-strong);
}
.alerts-table td.num,
.alerts-table th.num {
  text-align: right;
}
.alerts-table td.empty {
  text-align: center;
  color: var(--text-faint);
  font-style: italic;
  padding: 24px 12px;
}

.sev {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
}
.sev--info  { color: var(--text-muted); }
.sev--warn  { color: var(--c-warn); }
.sev--error { color: var(--c-error); }

.link-btn {
  background: transparent;
  border: none;
  border-bottom: 1px solid currentColor;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0;
  cursor: pointer;
}
.link-btn:hover { color: var(--text-strong); }

.alerts-form {
  margin-top: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.alerts-form__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px 20px;
  margin-bottom: 18px;
}
@media (max-width: 720px) {
  .alerts-form__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .alerts-form__grid { grid-template-columns: 1fr; }
}

@media (max-width: 980px) {
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .tile { border-bottom: 1px solid var(--line); }
  .tile:nth-child(2n) { border-right: none; }
  .tile:last-child { grid-column: 1 / -1; border-right: none; border-bottom: none; }
  .summary-card__grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
  .tiles { grid-template-columns: 1fr; }
  .tile { border-right: none; border-bottom: 1px solid var(--line); }
  .tile:last-child { grid-column: 1; border-bottom: none; }
  .summary-card__grid { grid-template-columns: repeat(2, 1fr); }
  .app-nav { gap: 14px; }
  main { padding: 28px 18px 56px; }
  .tile__number { font-size: 2.2rem; }
  .page-head { flex-direction: column; align-items: flex-start; gap: 8px; }
}