:root {
  color-scheme: light;
  --bg: #f3f5f7;
  --bg-soft: #e9edf0;
  --surface: #ffffff;
  --surface-raised: #fbfcfd;
  --ink: #111315;
  --muted: #68737c;
  --line: #d9e1e6;
  --strong-line: #bdc9d0;
  --accent: #12a481;
  --accent-dark: #08745d;
  --accent-soft: rgba(18, 164, 129, 0.12);
  --warning: #a76614;
  --danger: #b42318;
  --sidebar-bg: #ffffff;
  --sidebar-ink: #17191b;
  --sidebar-muted: #6d767d;
  --field-bg: #ffffff;
  --button-soft: #eef3f5;
  --shadow: 0 18px 45px rgba(17, 19, 21, 0.08);
  --shadow-soft: 0 1px 2px rgba(17, 19, 21, 0.05);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d1113;
  --bg-soft: #141a1d;
  --surface: #151b1f;
  --surface-raised: #1b2328;
  --ink: #f3f6f7;
  --muted: #9aa7af;
  --line: #273137;
  --strong-line: #3a474f;
  --accent: #25c79f;
  --accent-dark: #70e5c8;
  --accent-soft: rgba(37, 199, 159, 0.14);
  --warning: #f1b95d;
  --danger: #ff8178;
  --sidebar-bg: #0a0d0f;
  --sidebar-ink: #f7fafb;
  --sidebar-muted: #9ca7ad;
  --field-bg: #10161a;
  --button-soft: #222c32;
  --shadow: 0 22px 50px rgba(0, 0, 0, 0.28);
  --shadow-soft: 0 1px 0 rgba(255, 255, 255, 0.04);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top right, rgba(18, 164, 129, 0.08), transparent 34rem),
    linear-gradient(180deg, var(--bg-soft), var(--bg) 18rem);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 288px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 26px 18px;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--sidebar-bg) 92%, transparent);
  color: var(--sidebar-ink);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: grid;
  gap: 12px;
}

.brand img {
  width: 190px;
  max-width: 100%;
  border-radius: 0;
  padding: 0;
}

[data-theme="dark"] .brand img {
  filter: none;
}

:root:not([data-theme="dark"]) .brand img {
  filter: brightness(0);
}

.brand span {
  color: var(--sidebar-muted);
  font-size: 0.9rem;
}

.nav-tabs {
  display: grid;
  gap: 8px;
}

.nav-tab,
.ghost-button,
.primary-button,
.text-button,
.icon-button {
  border: 0;
  border-radius: 8px;
  min-height: 42px;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease,
    transform 0.15s ease;
}

.nav-tab {
  width: 100%;
  padding: 12px 14px;
  background: transparent;
  color: var(--sidebar-muted);
  text-align: left;
  font-weight: 700;
}

.nav-tab.active,
.nav-tab:hover {
  background: var(--ink);
  color: var(--bg);
  box-shadow: var(--shadow-soft);
}

.sidebar-actions {
  display: grid;
  gap: 8px;
  margin-top: auto;
}

.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
}

.sidebar .ghost-button {
  border-color: var(--line);
  background: transparent;
  color: var(--sidebar-ink);
}

.ghost-button:hover {
  border-color: var(--strong-line);
  background: var(--button-soft);
}

.sidebar .ghost-button:hover {
  background: var(--button-soft);
}

.file-button input,
#importData {
  display: none;
}

.content {
  min-width: 0;
  padding: 32px;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.topbar-actions {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sync-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.sync-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning);
}

.sync-status.online::before {
  background: var(--accent);
}

.sync-status.offline::before {
  background: var(--danger);
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(1.75rem, 2.4vw, 2.6rem);
  line-height: 1.08;
}

h2 {
  font-size: 1.05rem;
}

.month-filter {
  display: grid;
  gap: 8px;
  min-width: 210px;
}

label,
.month-filter label {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 650;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--field-bg);
  color: var(--ink);
  outline: 0;
}

input,
select {
  height: 42px;
  padding: 0 12px;
}

textarea {
  min-height: 90px;
  padding: 10px 12px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.metric,
.panel,
.form-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.metric {
  display: grid;
  gap: 12px;
  position: relative;
  min-height: 136px;
  padding: 20px;
  overflow: hidden;
}

.metric::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.metric span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.metric strong {
  align-self: end;
  font-size: clamp(1.35rem, 2vw, 2rem);
  line-height: 1;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  gap: 18px;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.panel,
.form-panel {
  overflow: hidden;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-raised);
}

.search {
  max-width: 260px;
}

.form-panel {
  display: grid;
  gap: 16px;
  padding: 20px;
}

.form-panel label {
  display: grid;
  gap: 8px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  background: linear-gradient(135deg, var(--ink), color-mix(in srgb, var(--ink) 78%, var(--accent)));
  color: var(--bg);
  font-weight: 750;
}

.primary-button:hover {
  transform: translateY(-1px);
}

.text-button {
  min-height: 34px;
  padding: 0 8px;
  background: transparent;
  color: var(--accent-dark);
  font-weight: 700;
}

.text-button:hover {
  background: var(--accent-soft);
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--surface-raised) 70%, transparent);
}

td {
  font-size: 0.92rem;
}

tbody tr:hover td {
  background: color-mix(in srgb, var(--accent-soft) 42%, transparent);
}

tr:last-child td {
  border-bottom: 0;
}

.muted {
  color: var(--muted);
}

.money {
  font-weight: 800;
}

.positive {
  color: var(--accent-dark);
}

.danger {
  color: var(--danger);
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 999px;
  background: var(--button-soft);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.badge.success {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.badge.warning {
  background: rgba(183, 121, 31, 0.12);
  color: var(--warning);
}

.badge.danger {
  background: rgba(180, 35, 24, 0.1);
  color: var(--danger);
}

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

.icon-button {
  min-width: 34px;
  min-height: 34px;
  padding: 0 10px;
  background: var(--button-soft);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 750;
}

.icon-button:hover {
  background: color-mix(in srgb, var(--button-soft) 72%, var(--ink));
}

.icon-button.delete {
  color: var(--danger);
}

.stack-list {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.list-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-raised);
  box-shadow: var(--shadow-soft);
}

.list-item strong,
.list-item span {
  display: block;
}

.list-item span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.84rem;
}

.empty-state {
  padding: 24px 16px;
  color: var(--muted);
  text-align: center;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 118px;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 750;
  box-shadow: var(--shadow-soft);
}

.theme-toggle:hover {
  border-color: var(--strong-line);
  background: var(--surface-raised);
}

.theme-switch {
  position: relative;
  width: 40px;
  height: 22px;
  border: 1px solid var(--strong-line);
  border-radius: 999px;
  background: var(--button-soft);
}

.theme-switch::before,
.theme-switch::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  transform: translateY(-50%);
}

.theme-switch::before {
  left: 8px;
  background: var(--warning);
  box-shadow:
    0 -5px 0 -2px var(--warning),
    0 5px 0 -2px var(--warning),
    5px 0 0 -2px var(--warning),
    -5px 0 0 -2px var(--warning);
}

.theme-switch::after {
  right: 8px;
  background: var(--muted);
  box-shadow: -3px 0 0 0 var(--button-soft);
}

.theme-switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  z-index: 1;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--surface);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18);
  transition: transform 0.18s ease;
}

[data-theme="dark"] .theme-switch-thumb {
  transform: translateX(18px);
}

@media (max-width: 1080px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .nav-tabs,
  .sidebar-actions {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .metrics-grid,
  .dashboard-grid,
  .split-layout {
    grid-template-columns: 1fr 1fr;
  }

  .split-layout .form-panel,
  .split-layout .panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .content {
    padding: 20px;
  }

  .topbar {
    display: grid;
  }

  .topbar-actions {
    display: grid;
    align-items: stretch;
  }

  .nav-tabs,
  .sidebar-actions,
  .metrics-grid,
  .dashboard-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .panel-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .search {
    max-width: none;
  }
}