:root {
    --bg: #0f172a;
    --card: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --primary: #22d3ee;
    --primary-dark: #0e7490;
    --success: #4ade80;
    --danger: #f87171;
    --warn: #fbbf24;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: radial-gradient(1200px 600px at 20% -10%, #164e63 0%, var(--bg) 55%);
    color: var(--text);
    min-height: 100vh;
}
.container { max-width: 900px; margin: 0 auto; padding: 28px 16px 40px; }
.container.narrow { max-width: 480px; }
.badge {
    display: inline-block;
    background: rgba(34, 211, 238, .12);
    color: var(--primary);
    border: 1px solid rgba(34, 211, 238, .35);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: .78rem;
    letter-spacing: .5px;
    text-transform: uppercase;
    margin-bottom: 14px;
}
h1 { font-size: 1.9rem; margin-bottom: 6px; }
.subtitle { color: var(--muted); margin-bottom: 24px; }
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 22px;
    margin-bottom: 20px;
}
.card h2 { font-size: 1.1rem; margin-bottom: 14px; color: var(--primary); }
.card h3 { font-size: .95rem; margin-bottom: 8px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; }
.stat {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}
.stat .label { font-size: .8rem; color: var(--muted); margin-bottom: 6px; }
.stat .value { font-size: 1.4rem; font-weight: 700; }
.value.income { color: var(--success); }
.value.expense { color: var(--danger); }
.value.neutral { color: var(--primary); }
label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 5px; }
input, select, textarea {
    width: 100%;
    background: #0b1526;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    padding: 10px 12px;
    font-size: .93rem;
    margin-bottom: 13px;
    outline: none;
    transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); }
select option { background: #1e293b; }
button, .btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #062630;
    font-weight: 700;
    border: 0;
    border-radius: 8px;
    padding: 11px 20px;
    font-size: .92rem;
    cursor: pointer;
    transition: filter .15s;
    display: inline-block;
    text-decoration: none;
}
button:hover, .btn:hover { filter: brightness(1.08); }
.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
}
.btn-danger {
    background: linear-gradient(135deg, var(--danger), #b91c1c);
    color: #fff;
    padding: 6px 12px;
    font-size: .8rem;
}
.btn-danger:hover { filter: brightness(1.1); }
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}
.topbar .brand { font-weight: 700; color: var(--primary); font-size: 1.05rem; }
.topbar .user { color: var(--muted); font-size: .9rem; }
.nav { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
.nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: .88rem;
    transition: all .15s;
}
.nav a.active, .nav a:hover { color: var(--primary); border-color: var(--primary); }
.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 18px; font-size: .92rem; }
.flash.success { background: rgba(74, 222, 128, .12); color: var(--success); border: 1px solid rgba(74, 222, 128, .3); }
.flash.error { background: rgba(248, 113, 113, .12); color: var(--danger); border: 1px solid rgba(248, 113, 113, .3); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .4px; }
td.income { color: var(--success); font-weight: 600; }
td.expense { color: var(--danger); font-weight: 600; }
.tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .4px;
}
.tag.income { background: rgba(74, 222, 128, .12); color: var(--success); border: 1px solid rgba(74, 222, 128, .3); }
.tag.expense { background: rgba(248, 113, 113, .12); color: var(--danger); border: 1px solid rgba(248, 113, 113, .3); }
.chart-wrap { position: relative; height: 260px; }
.empty { color: var(--muted); text-align: center; padding: 22px 0; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.footer { text-align: center; color: var(--muted); font-size: .78rem; margin-top: 20px; }
a { color: var(--primary); }