:root {
  --bg: #0d1117;
  --card-bg: #161b22;
  --raised-bg: #21262d;
  --border-subtle: rgba(240, 246, 252, 0.08);
  --border-subtle-2: rgba(240, 246, 252, 0.1);
  --border-dashed: rgba(240, 246, 252, 0.15);
  --row-hover: rgba(177, 186, 196, 0.08);
  --divider: rgba(240, 246, 252, 0.06);
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-faint: #6e7681;
  --text-hover: #c9d1d9;
  --accent-blue: #58a6ff;
  --accent-purple: #a371f7;
  --accent-purple-hover: #bc8cff;
  --accent-cyan: #39c5cf;
  --accent-slate: #545d7a;
  --success-green: #3fb950;
  --success-green-bright: #56d364;
  --danger-red: #f85149;
  --selection: rgba(56, 139, 253, 0.4);
}

html {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
}

::selection {
  background: var(--selection);
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type='number'] {
  -moz-appearance: textfield;
}
input,
select {
  font-family: inherit;
  color: inherit;
}
button {
  font-family: inherit;
}

.app {
  min-height: 100vh;
  padding: 36px 20px 90px;
}

/* ---------- Header ---------- */
.header {
  max-width: 1200px;
  margin: 0 auto 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.title {
  font: 700 22px/1.2 'IBM Plex Sans';
  letter-spacing: -0.01em;
}

.subtitle {
  font: 400 13px/1.5 'IBM Plex Sans';
  color: var(--text-secondary);
  margin-top: 2px;
}

.subtitle-error {
  color: var(--danger-red);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-reset {
  background: none;
  border: 1px solid var(--border-subtle-2);
  color: #7d8590;
  font: 500 12px 'IBM Plex Sans';
  padding: 7px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition:
    border-color 0.2s,
    color 0.2s;
}
.btn-reset:hover {
  border-color: rgba(240, 246, 252, 0.25);
  color: var(--text-hover);
}

.segmented {
  position: relative;
  display: inline-flex;
  background: var(--raised-bg);
  border: 1px solid var(--border-subtle-2);
  border-radius: 999px;
  padding: 4px;
  gap: 2px;
}

.segmented-pill {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc(50% - 4px);
  border-radius: 999px;
  background: var(--accent-blue);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.segmented-btn {
  position: relative;
  z-index: 1;
  border: none;
  background: none;
  padding: 8px 18px;
  font: 600 13px 'IBM Plex Sans';
  cursor: pointer;
  border-radius: 999px;
  transition: color 0.3s;
}

/* ---------- Login screen ---------- */
.login-screen {
  min-height: calc(100vh - 126px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  width: 100%;
  max-width: 320px;
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: center;
}

.login-title {
  font: 700 22px/1.2 'IBM Plex Sans';
  letter-spacing: -0.01em;
}

.login-sub {
  font: 400 13px/1.5 'IBM Plex Sans';
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.login-input {
  background: var(--raised-bg);
  border: 1px solid var(--border-subtle-2);
  border-radius: 8px;
  color: var(--text-primary);
  font: 500 14px 'IBM Plex Sans';
  padding: 10px 12px;
  outline: none;
  margin-bottom: 10px;
}
.login-input:focus-visible {
  border-color: var(--accent-blue);
}

.login-btn {
  background: var(--accent-blue);
  border: none;
  border-radius: 8px;
  color: #0d1117;
  font: 600 13px 'IBM Plex Sans';
  padding: 10px;
  cursor: pointer;
  transition: opacity 0.15s;
}
.login-btn:hover {
  opacity: 0.9;
}

.login-error {
  color: var(--danger-red);
  font: 500 12px 'IBM Plex Sans';
  margin-top: 12px;
}

.login-loading {
  color: var(--text-secondary);
  font: 400 13px 'IBM Plex Sans';
}

/* ---------- Hero ---------- */
.hero-card {
  max-width: 1200px;
  margin: 0 auto 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 36px 40px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero-label {
  font: 600 12px/1.4 'IBM Plex Sans';
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-number {
  font: 700 clamp(40px, 8vw, 76px)/1.05 'IBM Plex Mono';
}

.hero-sub {
  font: 400 14px/1.5 'IBM Plex Sans';
  color: var(--text-secondary);
}

/* ---------- Stats row ---------- */
.stats-row {
  max-width: 1200px;
  margin: 0 auto 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
}

.stat-label {
  font: 500 13px 'IBM Plex Sans';
  color: var(--text-secondary);
}

.stat-number {
  font: 600 26px 'IBM Plex Mono';
  color: var(--text-primary);
}

/* ---------- Donuts ---------- */
.donuts-row {
  max-width: 1200px;
  margin: 0 auto 28px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 16px;
}

.donut-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.donut-title {
  font: 600 12px 'IBM Plex Sans';
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.donut-title-sub {
  color: #484f58;
  font-weight: 400;
  text-transform: none;
}

.donut-body {
  display: grid;
  grid-template-columns: 150px 1fr;
  align-items: center;
  gap: 28px;
}

.donut-ring-wrap {
  position: relative;
  width: 150px;
  height: 150px;
  flex: none;
}

.donut-ring {
  width: 150px;
  height: 150px;
  border-radius: 50%;
}

.donut-center {
  position: absolute;
  inset: 22px;
  border-radius: 50%;
  background: var(--card-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.donut-center-num {
  font: 600 17px 'IBM Plex Mono';
}
.donut-center-label {
  font: 400 11px 'IBM Plex Sans';
  color: var(--text-secondary);
}

.donut-legend {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.legend-label {
  font: 500 13px 'IBM Plex Sans';
  flex: 1;
}
.legend-pct {
  font: 500 13px 'IBM Plex Mono';
  color: var(--text-secondary);
}

/* ---------- Category cards ---------- */
.categories-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 16px;
  align-items: start;
}

.categories-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.category-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.category-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.category-name {
  font: 600 15px 'IBM Plex Sans';
}
.category-total {
  font: 600 15px 'IBM Plex Mono';
}
.category-total-suffix {
  font: 400 11px 'IBM Plex Sans';
  color: var(--text-faint);
}

.rows {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.row {
  display: grid;
  gap: 8px;
  align-items: center;
  padding: 7px 6px;
  border-radius: 8px;
  transition: background 0.15s;
}
.row:hover {
  background: var(--row-hover);
}

.row--simple {
  grid-template-columns: 1fr 92px 46px 26px;
}
.row--one-off {
  grid-template-columns: 1fr 92px 100px 26px;
}
.row--quarterly {
  grid-template-columns: 1fr 84px 46px 1fr 26px;
}
.row--savings {
  grid-template-columns: 1fr 92px 26px;
}

.input-text {
  background: transparent;
  border: none;
  font: 500 14px 'IBM Plex Sans';
  padding: 4px 0;
  outline: none;
  width: 100%;
}

.input-amount {
  background: transparent;
  border: none;
  font: 500 14px 'IBM Plex Mono';
  text-align: right;
  outline: none;
  width: 100%;
}

.input-day {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font: 400 12px 'IBM Plex Mono';
  text-align: center;
  outline: none;
  width: 100%;
}

.input-note {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font: 400 12px 'IBM Plex Sans';
  padding: 4px 0;
  outline: none;
  width: 100%;
}

.input-boxed {
  background: transparent;
  border: 1px solid var(--border-subtle-2);
  border-radius: 6px;
  font: 400 12px 'IBM Plex Mono';
  text-align: center;
  outline: none;
  width: 100%;
  padding: 3px;
}

select.select-month {
  background: var(--raised-bg);
  border: 1px solid var(--border-subtle-2);
  border-radius: 6px;
  font: 400 12px 'IBM Plex Sans';
  padding: 4px 6px;
}

.btn-delete {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 4px;
  transition: color 0.15s;
}
.btn-delete:hover {
  color: var(--danger-red);
}

.btn-add {
  align-self: flex-start;
  background: none;
  border: 1px dashed var(--border-dashed);
  color: var(--text-secondary);
  font: 500 12.5px 'IBM Plex Sans';
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition:
    border-color 0.15s,
    color 0.15s;
}
.btn-add--green:hover {
  border-color: var(--success-green);
  color: var(--success-green);
}
.btn-add--blue:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}
.btn-add--purple:hover {
  border-color: var(--accent-purple);
  color: var(--accent-purple-hover);
}
.btn-add--cyan:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}
.btn-add--slate:hover {
  border-color: var(--accent-slate);
  color: var(--text-hover);
}
.btn-add--muted:hover {
  border-color: var(--text-secondary);
  color: var(--text-hover);
}

.empty-state {
  font: 400 13px 'IBM Plex Sans';
  color: var(--text-faint);
  padding: 6px;
}

/* Credit rows */
.loan-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 6px 10px;
  border-radius: 8px;
  transition: background 0.15s;
}
.loan-row:hover {
  background: var(--row-hover);
}

.loan-row-top {
  display: grid;
  grid-template-columns: 1fr 84px 26px;
  gap: 8px;
  align-items: center;
}

.loan-progress-line {
  display: flex;
  align-items: center;
  gap: 8px;
}

.progress-track {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--border-subtle-2);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--accent-purple);
  transition: width 0.6s ease;
}

.progress-label {
  font: 400 11px 'IBM Plex Mono';
  color: var(--text-secondary);
  white-space: nowrap;
}

.loan-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.loan-meta label {
  font: 400 11px 'IBM Plex Sans';
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 5px;
}

.loan-meta input[type='number'] {
  width: 44px;
  background: transparent;
  border: 1px solid var(--border-subtle-2);
  border-radius: 6px;
  font: 400 11px 'IBM Plex Mono';
  text-align: center;
  padding: 3px;
}

.loan-meta input[type='date'] {
  background: transparent;
  border: 1px solid var(--border-subtle-2);
  border-radius: 6px;
  font: 400 11px 'IBM Plex Mono';
  padding: 3px 5px;
}

/* ---------- Compact view ---------- */
.compact {
  max-width: 840px;
  margin: 0 auto;
}

.compact-strip {
  display: flex;
  align-items: baseline;
  gap: 22px;
  flex-wrap: wrap;
  padding: 18px 4px;
  border-bottom: 1px solid var(--border-subtle-2);
  margin-bottom: 18px;
}

.compact-strip-label {
  font: 400 12px 'IBM Plex Sans';
  color: var(--text-secondary);
}
.compact-strip-value {
  font: 600 16px 'IBM Plex Mono';
}
.compact-strip-note {
  font: 400 12px 'IBM Plex Sans';
  color: var(--text-faint);
}

.compact-bar {
  display: flex;
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 26px;
}

.compact-sections {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.compact-section-head {
  display: flex;
  justify-content: space-between;
  font: 600 13px 'IBM Plex Sans';
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0 4px 8px;
}
.compact-section-head span {
  font: 600 13px 'IBM Plex Mono';
}

.compact-row {
  display: grid;
  gap: 8px;
  align-items: center;
  padding: 6px 4px;
  border-bottom: 1px solid var(--divider);
}
.compact-row--simple {
  grid-template-columns: 1fr 84px 40px 20px;
}
.compact-row--one-off {
  grid-template-columns: 1fr 84px 96px 20px;
}
.compact-row--quarterly {
  grid-template-columns: 1fr 84px 40px 1fr 20px;
}
.compact-row--savings {
  grid-template-columns: 1fr 84px 20px;
}

.compact-row .input-text,
.compact-row .input-amount,
.compact-row .input-note {
  font-size: 13px;
  padding: 2px 0;
}
.compact-row .input-day {
  font-size: 11px;
  color: var(--text-faint);
}

.compact-loan-row {
  padding: 7px 4px;
  border-bottom: 1px solid var(--divider);
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.compact-loan-top {
  display: grid;
  grid-template-columns: 1fr 84px 20px;
  gap: 8px;
  align-items: center;
}

.compact-loan-top .input-text,
.compact-loan-top .input-amount {
  font-size: 13px;
  padding: 2px 0;
}

.compact-progress-line {
  display: flex;
  align-items: center;
  gap: 8px;
}
.compact-progress-line .progress-track {
  height: 4px;
  border-radius: 2px;
}
.compact-progress-line .progress-label {
  font-size: 10.5px;
  color: var(--text-faint);
}

.btn-delete-sm {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 14px;
  padding: 2px;
  transition: color 0.15s;
}
.btn-delete-sm:hover {
  color: var(--danger-red);
}

.btn-add-sm {
  margin-top: 6px;
  background: none;
  border: none;
  color: var(--text-faint);
  font: 400 12px 'IBM Plex Sans';
  cursor: pointer;
  padding: 4px;
  transition: color 0.15s;
}

/* ---------- Entrance animation ---------- */
.enter {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease;
}
.enter.mounted {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Focus states ---------- */
input:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Small screens ---------- */
@media (max-width: 480px) {
  .app {
    padding: 24px 14px 60px;
  }
  .header {
    flex-direction: column;
    align-items: stretch;
  }
  .header-actions {
    justify-content: space-between;
  }
  .hero-card {
    padding: 28px 22px;
  }
  .stats-row,
  .donuts-row,
  .categories-grid {
    grid-template-columns: 1fr;
  }
  .donut-body {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
  .donut-legend {
    width: 100%;
    text-align: left;
  }
}