:root {
  --bg: #08090e; --surface: #111422; --surface2: #181c30;
  --border: #252a45; --lime: #c8f135; --lime-dim: #a0c228;
  --amber: #f5a623; --rose: #ff6b6b;
  --text: #eef0f8; --text2: #a8adc8; --text3: #5a6080;
  --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --font-display: 'Bebas Neue', Impact, sans-serif;
  --r: 12px; --r-sm: 6px; --r-lg: 18px;
  --trans: 180ms cubic-bezier(.4,0,.2,1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-body); background: var(--bg); color: var(--text); min-height: 100vh; display: flex; flex-direction: column; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.site-header { position: sticky; top: 0; z-index: 200; background: var(--bg); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0 20px; height: 60px; }
.logo { font-size: 1.2rem; font-weight: 800; color: var(--lime); }
.nav-toggle { display: flex; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.burger-bar { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; }
#primary-nav { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--surface); padding: 12px 20px; }
#primary-nav.open { display: block; }
#primary-nav ul { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.nav-link { display: flex; padding: 10px 14px; color: var(--text2); font-weight: 600; text-decoration: none; border-radius: var(--r-sm); }
.nav-link.active { color: var(--lime); }
main { flex: 1; max-width: 1280px; width: 100%; margin: 0 auto; padding: 28px 20px 60px; }
.app-section { display: none; }
.app-section.active { display: block; animation: sectionIn 280ms cubic-bezier(.4,0,.2,1); }
@keyframes sectionIn { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }
.app-section>h1 { font-family: var(--font-display); font-size: clamp(2.2rem,8vw,4.5rem); font-weight:400; color:var(--text); margin-bottom:28px; line-height:1; letter-spacing:3px; text-transform:uppercase; }
.app-section>h1 span { color: var(--lime); }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 24px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 20px; display: flex; flex-direction: column; gap: 6px; }
.stat-label { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; color: var(--text3); }
.stat-value { font-family: var(--font-mono); font-size: clamp(1.2rem,4vw,2rem); font-weight: 500; color: var(--text); }
.budget-bar-wrap { margin-bottom: 32px; }
.budget-bar-track { width:100%; height:8px; background:var(--surface2); border-radius:999px; overflow:hidden; border:1px solid var(--border); }
.budget-bar-fill { height:100%; width:0%; background:linear-gradient(90deg,var(--lime-dim),var(--lime)); border-radius:999px; transition:width 700ms; }
.budget-bar-fill.over { background:linear-gradient(90deg,#c0392b,var(--rose)); }
.budget-bar-label { font-size:.78rem; color:var(--text3); margin-top:6px; font-family:var(--font-mono); }
.trend-chart { display:flex; align-items:flex-end; gap:8px; height:110px; padding:8px 0; }
.trend-bar-wrap { flex:1; display:flex; flex-direction:column; align-items:center; gap:6px; height:100%; justify-content:flex-end; }
.trend-bar { width:100%; min-height:3px; background:linear-gradient(180deg,var(--lime),var(--lime-dim)); border-radius:4px 4px 0 0; }
.trend-day { font-size:.6rem; color:var(--text3); font-family:var(--font-mono); text-transform:uppercase; }
label { display:block; font-size:.78rem; font-weight:700; color:var(--text3); margin-bottom:5px; text-transform:uppercase; letter-spacing:.08em; }
input[type="text"],input[type="search"],input[type="date"],select { width:100%; padding:11px 14px; background:var(--surface); border:1px solid var(--border); border-radius:var(--r); color:var(--text); font-family:var(--font-body); font-size:.95rem; transition:border-color var(--trans); appearance:none; }
input:focus,select:focus { border-color:var(--lime); box-shadow:0 0 0 3px rgba(200,241,53,.12); outline:none; }
input.invalid,select.invalid { border-color:var(--rose); }
.form-group { margin-bottom:18px; }
.field-error { display:block; font-size:.78rem; color:var(--rose); margin-top:5px; min-height:1.1em; font-family:var(--font-mono); }
.form-status { padding:10px 14px; border-radius:var(--r); margin-bottom:18px; font-size:.875rem; border:1px solid transparent; }
.form-status.success { background:rgba(200,241,53,.08); color:var(--lime); border-color:rgba(200,241,53,.2); }
.form-status.error { background:rgba(255,107,107,.08); color:var(--rose); border-color:rgba(255,107,107,.2); }
.form-actions { display:flex; gap:10px; flex-wrap:wrap; margin-top:24px; }
fieldset { border:1px solid var(--border); border-radius:var(--r-lg); padding:20px; margin-bottom:20px; }
legend { padding:0 10px; font-weight:700; font-size:.72rem; color:var(--lime); text-transform:uppercase; letter-spacing:.1em; }
button,.btn { display:inline-flex; align-items:center; gap:6px; padding:10px 18px; border-radius:var(--r); font-family:var(--font-body); font-size:.875rem; font-weight:700; cursor:pointer; border:none; text-decoration:none; transition:background var(--trans); }
#btn-submit,#btn-save-settings { background:var(--lime); color:var(--bg); }
.btn-secondary { background:var(--surface2); color:var(--text2); border:1px solid var(--border); }
#btn-clear-data { background:rgba(255,107,107,.1); color:var(--rose); border:1px solid rgba(255,107,107,.3); }
.table-wrap { overflow-x:auto; border-radius:var(--r-lg); border:1px solid var(--border); margin-bottom:20px; }
table { width:100%; border-collapse:collapse; font-size:.875rem; }
thead { background:var(--surface2); }
th { padding:11px 16px; text-align:left; font-size:.68rem; font-weight:700; text-transform:uppercase; letter-spacing:.12em; color:var(--text3); border-bottom:1px solid var(--border); }
td { padding:13px 16px; border-bottom:1px solid var(--border); color:var(--text2); }
tr:last-child td { border-bottom:none; }
.badge { font-size:.8rem; font-weight:700; font-family:var(--font-mono); color:var(--lime); }
.empty-msg { text-align:center; padding:48px; color:var(--text3); font-size:.9rem; font-family:var(--font-mono); }
.btn-edit,.btn-delete { background:none; border:none; padding:0; font-size:.82rem; font-weight:600; cursor:pointer; text-decoration:underline; }
.btn-edit { color:var(--text2); } .btn-delete { color:var(--rose); }
mark { background:rgba(245,166,35,.3); color:var(--amber); border-radius:3px; padding:0 3px; font-weight:700; }
.import-export { display:flex; gap:8px; flex-wrap:wrap; margin-bottom:40px; }
@media (min-width: 768px) {
  #primary-nav { display: block; position: static; background: transparent; border: none; padding: 0; }
  #primary-nav ul { flex-direction: row; gap: 4px; }
  .nav-toggle { display: none; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 600px) {
  .table-wrap table,.table-wrap thead,.table-wrap tbody,.table-wrap th,.table-wrap td,.table-wrap tr { display: block; }
  .table-wrap thead { display: none; }
  .table-wrap tr { background:var(--surface); border:1px solid var(--border); border-radius:12px; margin-bottom:10px; padding:14px; }
  .table-wrap td { border:none; padding:5px 0; display:flex; justify-content:space-between; }
  .table-wrap td::before { content:attr(data-label); font-size:.68rem; font-weight:700; text-transform:uppercase; color:var(--text3); }
}
.skip-link { position:absolute; top:-100%; left:16px; background:var(--lime); color:var(--bg); padding:10px 18px; border-radius:0 0 12px 12px; font-weight:700; text-decoration:none; z-index:9999; }
.skip-link:focus { top:0; }
.toolbar { display:flex; flex-direction:column; gap:12px; margin-bottom:20px; }
.toolbar-controls { display:flex; flex-wrap:wrap; gap:12px; }
.hint { font-size:.72rem; color:var(--text3); font-family:var(--font-mono); margin-top:4px; }
.rates-grid { display:grid; grid-template-columns:1fr; gap:12px; }
.about-card { background:var(--surface); border:1px solid var(--border); border-radius:24px; padding:2rem; max-width:600px; }
.about-app-name { font-family:var(--font-display); font-size:2rem; color:var(--lime); margin-bottom:1rem; }
.about-links { list-style:none; margin-top:1.5rem; display:flex; gap:1rem; flex-wrap:wrap; }
.about-links a { color:var(--lime); text-decoration:none; font-weight:600; }
.site-footer { text-align:center; padding:1.5rem; color:var(--text3); font-size:.8rem; border-top:1px solid var(--border); margin-top:auto; }
:focus-visible { outline:2px solid var(--lime); outline-offset:3px; border-radius:4px; }
.stat-card { transition: border-color 180ms, transform 180ms, box-shadow 180ms; cursor: default; }
.stat-card:hover { border-color: #2e3560; transform: translateY(-2px); box-shadow: 0 4px 24px rgba(0,0,0,.5); }
.stat-card:nth-child(2) .stat-value { color: var(--lime); }
tbody tr:hover td { background: var(--surface2); }
td:first-child { color: var(--text); font-weight: 500; }
button:active { transform: scale(.97); }
input::placeholder { color: var(--text3); }
input:hover, select:hover { background: var(--surface2); }
.form-status { display: block; }
input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(.6); cursor: pointer; }
#btn-export, label.btn { background:var(--surface2); color:var(--text2); border:1px solid var(--border); cursor:pointer; }
.btn-danger, #btn-clear-data { background:rgba(255,107,107,.1); color:var(--rose); border:1px solid rgba(255,107,107,.3); }
.burger-bar { transition: transform 180ms cubic-bezier(.4,0,.2,1), opacity 180ms cubic-bezier(.4,0,.2,1); }
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
#section-dashboard h2 { font-size:.7rem; font-weight:700; text-transform:uppercase; letter-spacing:.12em; color:var(--text3); margin-bottom:16px; }
.trend-bar { opacity:.7; transition: opacity 180ms; cursor:pointer; }
.trend-bar:hover { opacity:1; }
@media (min-width: 1024px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } .toolbar { flex-direction: row; align-items: flex-end; } }
.search-wrap .hint { margin-top: 4px; }
.stat-card:nth-child(4) .stat-value { color: var(--amber); }