:root {
  --bg: #f4f6f8;
  --bg-2: #e8eef2;
  --ink: #1c2430;
  --muted: #5b6777;
  --line: #d5dde6;
  --sea: #0f766e;
  --sea-dark: #0b5b55;
  --sea-soft: #d9f2ef;
  --coral: #c45c4a;
  --coral-soft: #f8e6e2;
  --card: #ffffff;
  --shadow: 0 10px 30px rgba(28, 36, 48, 0.06);
  --radius: 14px;
  --font-ui: "DM Sans", system-ui, sans-serif;
  --font-display: "Source Serif 4", Georgia, serif;
  --font-num: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-ui);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #d7ebe8 0%, transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

a { color: var(--sea); text-decoration: none; }
a:hover { color: var(--sea-dark); }

.app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #14202b;
  color: #e8eef2;
  padding: 1.5rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.2;
  padding: 0 .4rem;
}

.brand span {
  display: block;
  font-family: var(--font-ui);
  font-size: .75rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: #9db0c2;
  margin-top: .35rem;
}

.nav { display: flex; flex-direction: column; gap: .25rem; }
.nav a {
  color: #c9d6e2;
  padding: .7rem .85rem;
  border-radius: 10px;
  transition: background .2s ease, color .2s ease;
}
.nav a:hover, .nav a.active {
  background: rgba(15, 118, 110, .28);
  color: #fff;
}

.sidebar-foot {
  margin-top: auto;
  padding: .4rem;
  color: #8ea0b2;
  font-size: .85rem;
}

.main {
  padding: 1.5rem 1.75rem 2.5rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.topbar h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .65rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
}
.badge-open { background: var(--sea-soft); color: var(--sea-dark); }
.badge-locked { background: var(--coral-soft); color: var(--coral); }

.flash {
  padding: .85rem 1rem;
  border-radius: 12px;
  margin-bottom: 1rem;
}
.flash-success { background: var(--sea-soft); color: var(--sea-dark); }
.flash-error { background: var(--coral-soft); color: var(--coral); }

.grid-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}
.stat .label {
  color: var(--muted);
  font-size: .82rem;
  margin-bottom: .35rem;
}
.stat .value {
  font-family: var(--font-num);
  font-size: 1.35rem;
  font-weight: 500;
}
.stat .value.positive { color: var(--sea); }
.stat .value.negative { color: var(--coral); }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.1rem 1.2rem;
  margin-bottom: 1.1rem;
}

.panel h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
}

.group-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  padding-bottom: .75rem;
  border-bottom: 2px solid var(--sea);
}
.group-header h2 { margin: 0; }
.group-total {
  font-family: var(--font-num);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--sea-dark);
}

.income-groups {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.income-table-block {
  margin-bottom: 0;
}
.income-table-block table tfoot td {
  border-top: 2px solid var(--line);
  padding-top: .85rem;
  background: var(--sea-soft);
}

.subcat-block {
  margin-top: 1.15rem;
  padding: .85rem 1rem 1rem;
  border-radius: 12px;
  border: 1px solid #c5ddd9;
  border-left: 5px solid var(--sea);
  background: #f3faf9;
}
.subcat-block:first-of-type {
  margin-top: .35rem;
}
.subcat-title {
  margin: 0 0 .75rem;
  padding: .55rem .75rem;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: .01em;
  color: #083832;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: #cfe8e4;
}
.subcat-label {
  text-transform: none;
}
.subcat-title .num {
  color: var(--sea-dark);
  font-family: var(--font-num);
  font-weight: 600;
  font-size: .95rem;
  white-space: nowrap;
}
.subcat-block table {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(15, 118, 110, .12);
}

/* Distinct tones so each credit subcategory stands out */
.subcat-tone-1 {
  border-left-color: #0f766e;
  background: #eef8f6;
}
.subcat-tone-1 .subcat-title { background: #bfe3de; color: #064e48; }

.subcat-tone-2 {
  border-left-color: #1d4e89;
  background: #eef3f9;
}
.subcat-tone-2 .subcat-title { background: #c9daf0; color: #12355f; }
.subcat-tone-2 .subcat-title .num { color: #1d4e89; }

.subcat-tone-3 {
  border-left-color: #8a5a2b;
  background: #f9f4ee;
}
.subcat-tone-3 .subcat-title { background: #ead7c2; color: #5a3a18; }
.subcat-tone-3 .subcat-title .num { color: #8a5a2b; }

.subcat-tone-4 {
  border-left-color: #5b4b8a;
  background: #f4f1f9;
}
.subcat-tone-4 .subcat-title { background: #d9d0eb; color: #3a2f5c; }
.subcat-tone-4 .subcat-title .num { color: #5b4b8a; }

.subcat-tone-5 {
  border-left-color: #a64545;
  background: #faf0f0;
}
.subcat-tone-5 .subcat-title { background: #ebc8c8; color: #6b2424; }
.subcat-tone-5 .subcat-title .num { color: #a64545; }

.cat-footer {
  margin-top: 1rem;
  padding: .75rem .9rem;
  background: var(--sea-soft);
  border-radius: 10px;
  text-align: right;
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 960px) {
  .charts-grid {
    grid-template-columns: 1fr 1fr;
  }
  .charts-grid .chart-wide {
    grid-column: 1 / -1;
  }
}
.chart-wrap {
  position: relative;
  height: 320px;
}
.chart-wrap.tall { height: 380px; }

.toolbar {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  align-items: end;
  margin-bottom: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem;
}
.form-row.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-group { display: flex; flex-direction: column; gap: .35rem; margin-bottom: .9rem; }
.form-group.full { grid-column: 1 / -1; }
label { font-size: .85rem; color: var(--muted); font-weight: 600; }

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .7rem .8rem;
  font: inherit;
  background: #fff;
  color: var(--ink);
}
textarea { min-height: 90px; resize: vertical; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border: none;
  border-radius: 10px;
  padding: .7rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--sea); color: #fff; }
.btn-primary:hover { background: var(--sea-dark); }
.btn-ghost { background: transparent; border: 1px solid var(--line); color: var(--ink); }
.btn-danger { background: var(--coral); color: #fff; }
.btn-sm { padding: .4rem .7rem; font-size: .85rem; }

table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  text-align: left;
  padding: .75rem .5rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}
td.num, th.num {
  font-family: var(--font-num);
  text-align: right;
  white-space: nowrap;
}

.actions { display: flex; gap: .4rem; flex-wrap: wrap; }

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}
.login-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 1.75rem;
}
.login-card h1 {
  font-family: var(--font-display);
  margin: 0 0 .35rem;
}
.login-card p {
  margin: 0 0 1.25rem;
  color: var(--muted);
}

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

.choose-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.choose-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.35rem 1.4rem;
  color: inherit;
  transition: border-color .15s ease, transform .15s ease;
}
.choose-card:hover {
  border-color: var(--sea);
  transform: translateY(-2px);
  color: inherit;
}
.choose-card-accent {
  border-color: #9ecfc8;
  background: linear-gradient(180deg, #f3fbfa 0%, #fff 70%);
}
.choose-card h2 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
}
.choose-card p {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.45;
}
.choose-cta {
  font-weight: 700;
  color: var(--sea-dark);
}

.cat-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}
.cat-tab {
  padding: .45rem .8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: #fff;
  font-size: .9rem;
  font-weight: 600;
}
.cat-tab:hover { border-color: var(--sea); color: var(--sea-dark); }
.cat-tab.active {
  background: var(--sea);
  border-color: var(--sea);
  color: #fff;
}
.cat-tab-sub {
  font-size: .82rem;
  padding: .35rem .7rem;
  background: #f3f7f8;
}
.jump-panel { position: sticky; top: .5rem; z-index: 5; }
.jump-label {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
  margin-bottom: .55rem;
}
.jump-subs {
  margin: 0 0 1rem;
  padding: .75rem .85rem;
  background: #f7fafb;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.income-table-block,
.subcat-block {
  scroll-margin-top: 5.5rem;
}

.quick-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)) auto;
  gap: .55rem;
  align-items: center;
}
.batch-table-wrap { overflow-x: auto; }
.batch-table input,
.batch-table select {
  min-width: 110px;
}
.batch-table td { padding: .4rem .35rem; }

.batch-details {
  margin-top: 1rem;
  padding: .65rem .85rem;
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: #fafcfd;
}
.batch-details summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--sea-dark);
}

.stack { display: flex; flex-direction: column; gap: .75rem; }
.cat-block {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: .85rem;
}
.sub-list { margin: .75rem 0 0; padding-left: 0; list-style: none; }
.sub-list li {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  padding: .45rem 0;
  border-top: 1px dashed var(--line);
  align-items: center;
}

@media (max-width: 980px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: sticky;
    top: 0;
    z-index: 10;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: .75rem;
  }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .sidebar-foot { margin-top: 0; width: 100%; }
  .grid-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-row, .form-row.three { grid-template-columns: 1fr; }
  .choose-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .grid-stats { grid-template-columns: 1fr; }
  .main { padding: 1rem; }
}