/* Tokens */
:root {
  color-scheme: light dark;

  --bg: #f4f5f7;
  --bg-elevated: #ffffff;
  --text: #14161a;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --accent: #4f46e5;
  --accent-contrast: #ffffff;
  --positive: #16a34a;
  --negative: #dc2626;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --nav-height: 64px;
  --user-corbinian: #2563eb;
  --user-denise: #db2777;

  /* Validated categorical palette (dataviz skill), fixed hue order,
     mapped 1:1 to categories.sort_order so hue never depends on ranking. */
  --cat-aktivitaeten: #2a78d6;
  --cat-privat: #eb6834;
  --cat-lebensmittel: #1baf7a;
  --cat-einkauf: #eda100;
  --cat-auslagen: #e87ba4;
  --cat-drogerie: #008300;
  --cat-urlaub: #4a3aa7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bg-elevated: #191c22;
    --text: #f2f3f5;
    --text-muted: #9aa1ac;
    --border: #2a2e37;
    --accent: #818cf8;
    --accent-contrast: #0f1115;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 10px rgba(0, 0, 0, 0.35);

    --cat-aktivitaeten: #3987e5;
    --cat-privat: #d95926;
    --cat-lebensmittel: #199e70;
    --cat-einkauf: #c98500;
    --cat-auslagen: #d55181;
    --cat-drogerie: #008300;
    --cat-urlaub: #9085e9;
  }
}

/* Reset */
* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding-top: env(safe-area-inset-top, 0px);
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.45;
  min-height: 100dvh;
}

h1, h2, h3, p {
  margin: 0 0 0.5em;
}

a {
  color: inherit;
}

button, input, select {
  font: inherit;
  color: inherit;
}

img {
  max-width: 100%;
}

[hidden] {
  display: none !important;
}

/* Layout */
.app-shell {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 16px calc(var(--nav-height) + env(safe-area-inset-bottom, 0px) + 32px);
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 4px 20px;
}

.top-bar .brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.section {
  margin-bottom: 28px;
}

.section-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin: 0 4px 10px;
}

/* Card */
.card {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  padding: 18px;
}

.card + .card {
  margin-top: 12px;
}

/* Avatar */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.avatar.user-corbinian {
  background: var(--user-corbinian);
}

.avatar.user-denise {
  background: var(--user-denise);
}

/* Balance display */
.balance-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.balance-row .who {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.balance-amount {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.05rem;
}

.balance-amount.positive {
  color: var(--positive);
}

.balance-amount.negative {
  color: var(--negative);
}

.balance-amount.zero {
  color: var(--text-muted);
}

/* Buttons */
.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.btn-block {
  display: block;
  width: 100%;
}

.btn-sm {
  padding: 8px 10px;
  font-size: 0.85rem;
  border-radius: 999px;
}

.btn-group-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.btn-group-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.btn-user {
  padding: 14px 10px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  background: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  cursor: pointer;
}

.btn-user[aria-pressed="true"] {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-elevated));
}

/* Category chips */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: 10px;
}

.category-chip {
  border: 2px solid var(--border);
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  padding: 12px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  line-height: 1.2;
}

.category-chip .icon {
  font-size: 1.4rem;
}

.category-chip[aria-pressed="true"] {
  border-color: var(--cat-color, var(--accent));
  background: color-mix(in srgb, var(--cat-color, var(--accent)) 14%, var(--bg-elevated));
}

.category-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1rem;
  background: color-mix(in srgb, var(--cat-color, var(--accent)) 18%, var(--bg-elevated));
  flex-shrink: 0;
}

.cat-aktivitaeten { --cat-color: var(--cat-aktivitaeten); }
.cat-privat { --cat-color: var(--cat-privat); }
.cat-lebensmittel { --cat-color: var(--cat-lebensmittel); }
.cat-einkauf { --cat-color: var(--cat-einkauf); }
.cat-auslagen { --cat-color: var(--cat-auslagen); }
.cat-drogerie { --cat-color: var(--cat-drogerie); }
.cat-urlaub { --cat-color: var(--cat-urlaub); }

/* Forms */
.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.field input[type="text"],
.field input[type="number"],
.field input[type="date"],
.field textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
}

.field textarea {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  resize: vertical;
}

.input-amount {
  display: flex;
  align-items: center;
  gap: 8px;
}

.input-amount input {
  flex: 1;
}

/* Statistik page */
.range-switcher {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.range-switcher a.btn-user {
  text-decoration: none;
}

.period-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.period-nav .period-label {
  font-weight: 700;
  min-width: 9em;
  text-align: center;
}

.period-nav .nav-arrow {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 700;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}

.period-nav .nav-arrow[aria-disabled="true"] {
  opacity: 0.3;
  pointer-events: none;
}

.stat-hero {
  text-align: center;
  padding: 4px 0 8px;
}

.stat-hero .value {
  font-size: 2.4rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.stat-hero .label {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.stat-tiles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat-tile {
  text-align: center;
}

.stat-tile .value {
  font-size: 1.3rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.stat-tile .label {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.chart-wrap {
  position: relative;
  height: 220px;
}

.chart-table-toggle {
  margin-top: 10px;
}

.chart-table-toggle summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.chart-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  font-size: 0.85rem;
}

.chart-table th,
.chart-table td {
  text-align: left;
  padding: 6px 4px;
  border-bottom: 1px solid var(--border);
}

.chart-table td:last-child,
.chart-table th:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Category spend bars */
.category-bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.category-bar-info {
  flex: 1;
  min-width: 0;
}

.category-bar-label {
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.category-bar-amount {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: 0.9rem;
  white-space: nowrap;
}

progress.category-bar {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  display: block;
  width: 100%;
  height: 8px;
  border: none;
  border-radius: 999px;
  background: var(--border);
}

progress.category-bar::-webkit-progress-bar {
  background: var(--border);
  border-radius: 999px;
}

progress.category-bar::-webkit-progress-value {
  background: var(--cat-color, var(--accent));
  border-radius: 999px;
}

progress.category-bar::-moz-progress-bar {
  background: var(--cat-color, var(--accent));
  border-radius: 999px;
}

/* Expense list rows */
.expense-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.expense-row:last-child {
  border-bottom: none;
}

.expense-row .details {
  flex: 1;
  min-width: 0;
}

.expense-row .title {
  font-weight: 600;
}

.expense-row .meta {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.expense-row .amount {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* Floating action button */
.fab {
  position: fixed;
  right: max(20px, calc((100dvw - 640px) / 2 + 20px));
  bottom: calc(var(--nav-height) + env(safe-area-inset-bottom, 0px) + 18px);
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-contrast);
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.4);
  cursor: pointer;
  z-index: 20;
}

/* Bottom nav */
.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(var(--nav-height) + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 10;
}

.bottom-nav .nav-inner {
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
  display: flex;
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
}

.nav-item .icon {
  font-size: 1.3rem;
}

.nav-item[aria-current="page"] {
  color: var(--accent);
}

/* Dialog */
dialog {
  border: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 0;
  width: 100%;
  max-width: 640px;
  margin: auto auto 0;
  background: var(--bg-elevated);
  color: var(--text);
}

dialog::backdrop {
  background: rgba(15, 17, 21, 0.5);
}

dialog .dialog-body {
  padding: 22px 18px calc(env(safe-area-inset-bottom, 0px) + 22px);
  max-height: 85dvh;
  overflow-y: auto;
}

@media (min-width: 640px) {
  dialog {
    margin: auto;
    border-radius: var(--radius-lg);
  }
}

/* Utility */
.text-muted {
  color: var(--text-muted);
}

.mt-3 {
  margin-top: 12px;
}

.htmx-indicator {
  opacity: 0;
  transition: opacity 200ms ease-in;
}

.htmx-request.htmx-indicator,
.htmx-request .htmx-indicator {
  opacity: 1;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 32px 16px;
}

.status-message {
  margin-top: 12px;
  font-size: 0.9rem;
  min-height: 1.2em;
}

.status-message.error {
  color: var(--negative);
}

.status-message.success {
  color: var(--positive);
}