*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

[hidden] {
  display: none !important;
}

:root {
  --bg: #faf9f6;
  --surface: #ffffff;
  --surface2: #f3f2ed;
  --border: rgba(0,0,0,0.08);
  --border-strong: rgba(0,0,0,0.16);
  --text: #1a1a18;
  --text-muted: #6b6b65;
  --text-faint: #9e9e97;
  --accent: #2d5be3;
  --accent-bg: #eef1fd;
  --radius: 12px;
  --radius-lg: 14px;
  --danger: #c0392b;
  --notice-warn-bg: #fff8e1;
  --notice-warn-text: #7a5c00;
  --notice-warn-border: #f0d060;
  --notice-error-bg: #fdecea;
  --notice-error-border: #f5c0bc;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141412;
    --surface: #1e1e1b;
    --surface2: #272724;
    --border: rgba(255,255,255,0.08);
    --border-strong: rgba(255,255,255,0.16);
    --text: #e8e7e2;
    --text-muted: #8a8a82;
    --text-faint: #5a5a54;
    --accent: #6b8ff5;
    --accent-bg: #1a2040;
    --notice-warn-bg: #2a2000;
    --notice-warn-text: #d4aa40;
    --notice-warn-border: #5a4400;
    --notice-error-bg: #2a0e0e;
    --notice-error-border: #5a2020;
  }
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 100;

  & h1 {
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.01em;

    & span {
      color: var(--text-muted);
      font-weight: 400;
    }
  }
}

@media (min-width: 640px) {
  header { padding: 0 2rem; }
}

.header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.btn {
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;

  &:hover { background: var(--surface2); }
  &:active { opacity: 0.7; }
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;

  &:hover { opacity: 0.88; background: var(--accent); }
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  display: inline-grid;
  place-items: center;
  color: var(--text-muted);

  & svg { display: block; }
  &:hover { color: var(--text); }
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

@media (min-width: 640px) {
  main { padding: 2rem 1.5rem; }
}

/* Upload zone */
#upload-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;

  &:hover, &.drag-over {
    border-color: var(--accent);
    background: var(--accent-bg);
  }

  & h2 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 0.5rem;
  }

  & p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 1.5rem;
  }

  & .upload-notice {
    margin-top: 1rem;
    font-size: 12px;
  }
}

/* Progress */
#progress-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.progress-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.progress-bar-wrap {
  background: var(--surface2);
  border-radius: 99px;
  height: 6px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 99px;
  width: 0%;
  transition: width 0.3s ease;
}

.progress-count {
  font-size: 12px;
  color: var(--text-faint);
}

/* Report */
.report-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 8px;

  & .report-title {
    font-size: 26px;
    font-weight: 600;
    letter-spacing: -0.01em;
  }

  & .report-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
  }

  & .report-actions {
    display: flex;
    gap: 8px;
  }
}

/* Metric cards */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  margin-bottom: 1.5rem;
}

.metric {
  background: var(--surface2);
  border-radius: var(--radius);
  padding: 0.875rem 1.125rem;

  & .metric-label {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 500;
  }

  & .metric-value {
    font-size: 22px;
    font-weight: 500;
    letter-spacing: -0.01em;
  }

  & .metric-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

/* Chart */
.chart-wrap {
  background: transparent;
  border: none;
  padding: 0;
  margin-bottom: 1.5rem;
}

#chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin-top: 1rem;
  font-size: 12px;
  color: var(--text-muted);

  & span {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  & .swatch {
    width: 10px;
    height: 10px;
    border-radius: 3px;
    flex-shrink: 0;
  }
}

.chart-container {
  position: relative;
  width: 100%;
}

/* Category list */
.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 8px;
  overflow: hidden;
}

/* <summary> default marker — strip the disclosure triangle */
summary.category-header {
  list-style: none;

  &::-webkit-details-marker { display: none; }
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  cursor: pointer;
  user-select: none;
  gap: 12px;

  &:hover { background: var(--surface2); }
}

.category-card[open] .cat-chevron { transform: rotate(180deg); }

.cat-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.cat-swatch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  flex-shrink: 0;
}

.cat-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.cat-right {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.cat-total {
  font-size: 15px;
  font-weight: 500;
}

.cat-count {
  font-size: 12px;
  color: var(--text-faint);
}

.cat-chevron {
  font-size: 14px;
  color: var(--text-faint);
  transition: transform 0.2s;
  display: inline-block;
  width: 14px;
  text-align: center;
}

.category-body {
  border-top: 1px solid var(--border);
}

.merchant-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 10px 16px;
  border: none;
  border-bottom: 1px solid var(--border);
  background: none;
  cursor: pointer;
  text-align: left;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
  transition: background 0.1s;

  &:last-child { border-bottom: none; }
  &:hover { background: var(--accent-bg); }
}

.tx-name {
  font-size: 13.5px;
  color: var(--text);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding-right: 12px;
}

.tx-count {
  color: var(--text-faint);
  margin-left: 4px;
}

.tx-amount {
  font-size: 13.5px;
  color: var(--text);
  flex-shrink: 0;
}

/* Reclassify modal — centered by default, fullscreen on narrow viewports */
#reclassify-modal {
  border: none;
  padding: 0;
  background: transparent;
  color: var(--text);
  margin: auto;
  max-width: none;
  max-height: none;

  &::backdrop {
    background: rgba(0, 0, 0, 0.5);
  }

  & .modal-content {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    width: 380px;
    max-width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
  }

  & h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
  }

  & p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 1rem;
  }
}

@media (max-width: 480px) {
  #reclassify-modal {
    width: 100vw;
    height: 100dvh;

    & .modal-content {
      width: 100vw;
      max-width: 100vw;
      height: 100dvh;
      max-height: 100dvh;
      border-radius: 0;
    }
  }
}

/* Prev / next month buttons sitting either side of the date chip */
.date-nav {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  font: inherit;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  padding: 0;
  transition: background 0.1s, color 0.1s, opacity 0.1s;

  &:hover { background: var(--accent-bg); color: var(--accent); border-color: var(--accent); }
  &:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    background: var(--surface2);
    color: var(--text-faint);
    border-color: var(--border);
  }
}

/* Date-range trigger + anchored popover */
.date-trigger {
  font: inherit;
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 10px 2px 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  anchor-name: --date-anchor;

  &:hover { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); }

  & .date-chevron {
    font-size: 11px;
    line-height: 1;
    color: var(--text-faint);
  }
}

#date-popover {
  position: fixed;
  position-anchor: --date-anchor;
  top: anchor(bottom, 80px);
  left: anchor(left, 1rem);
  right: auto;
  bottom: auto;
  margin: 6px 0 0;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius);
  padding: 0;
  box-shadow: 0 12px 32px rgba(0,0,0,0.18);

  & .popover-content {
    padding: 1rem;
    min-width: 260px;
  }

  & h4 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  & .date-fields {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
  }

  & .date-fields label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
    color: var(--text-muted);
  }

  & .date-fields input {
    padding: 6px 10px;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    background: var(--surface2);
    color: var(--text);
    font-size: 13px;
    font-family: inherit;
    color-scheme: light dark;
  }

  & .popover-actions {
    display: flex;
    justify-content: flex-end;
    gap: 6px;
  }
}

.modal-cats {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 1rem;
}

.modal-cat-btn {
  text-align: left;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface2);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  color: var(--text);
  transition: background 0.1s;
  display: flex;
  align-items: center;
  gap: 8px;

  &:hover { background: var(--accent-bg); border-color: var(--accent); }
  &.current { border-color: var(--accent); color: var(--accent); }
}

.modal-cat-new { border-style: dashed; }

/* Settings panel */
#settings-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;

  & h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 1rem;
  }
}

.field {
  margin-bottom: 1rem;

  & label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
  }

  & input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    background: var(--surface2);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;

    &:focus { border-color: var(--accent); }
  }
}

.field-note {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 4px;
}

.notice {
  font-size: 13px;
  padding: 10px 14px;
  border-radius: 8px;
  margin-top: 0.5rem;

  &.warn {
    background: var(--notice-warn-bg);
    color: var(--notice-warn-text);
    border: 1px solid var(--notice-warn-border);
  }

  &.saved {
    background: var(--accent-bg);
    color: var(--accent);
    border: 1px solid var(--accent);
  }

  &.error {
    background: var(--notice-error-bg);
    color: var(--danger);
    border: 1px solid var(--notice-error-border);
  }
}