:root {
    --bg: #0f1220;
    --surface: #181c2e;
    --border: #2e334d;
    --text: #e2e8f0;
    --text2: #94a3b8;
    --text3: #64748b;
    --accent: #4c89e5;
    --accent2: #7aa7f0;
    --green: #34d399;
    --red: #f87171;
    --radius: 12px;
    --radius-sm: 8px;
    color-scheme: dark;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent2); }

.lang-bar {
    position: fixed; top: .75rem; right: 1rem;
    display: flex; gap: .4rem; font-size: .8rem; color: var(--text3);
}
.lang-bar a { color: var(--text2); text-decoration: none; padding: .1rem .3rem; border-radius: 4px; }
.lang-bar a[aria-current="true"] { color: var(--text); background: var(--surface); font-weight: 700; }

.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 3rem 1rem; }
.auth-card {
    width: 100%; max-width: 400px;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 2rem;
}
.auth-logo { font-size: 1.4rem; font-weight: 800; }
.auth-sub { margin: .2rem 0 1.25rem; color: var(--text2); font-size: .85rem; }
.auth-card h1 { font-size: 1.15rem; margin: 0 0 1rem; }
.auth-text { color: var(--text2); font-size: .9rem; margin: 0 0 1rem; }
.auth-links { display: flex; flex-direction: column; gap: .4rem; margin-top: 1.25rem; font-size: .85rem; }

.field { display: flex; flex-direction: column; gap: .35rem; margin-bottom: 1rem; }
.field label { font-size: .8rem; color: var(--text2); font-weight: 600; }
input {
    width: 100%; padding: .65rem .8rem;
    background: var(--bg); color: var(--text);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    font: inherit;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.code-input { font-size: 1.6rem; letter-spacing: .5rem; text-align: center; font-variant-numeric: tabular-nums; }
.hint { color: var(--text3); font-size: .78rem; }

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: .65rem 1rem; border: 0; border-radius: var(--radius-sm);
    font: inherit; font-weight: 600; cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent2); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-link { background: none; color: var(--accent2); padding: .4rem 0; text-decoration: underline; }
.btn-full { width: 100%; }
.btn-sm { padding: .35rem .7rem; font-size: .85rem; }
.inline-form { display: inline; }

.msg { padding: .7rem .9rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-size: .88rem; }
.msg-error { background: rgba(248, 113, 113, .12); border: 1px solid rgba(248, 113, 113, .4); color: #fecaca; }
.msg-info { background: rgba(76, 137, 229, .12); border: 1px solid rgba(76, 137, 229, .4); color: #dbeafe; }

.topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: .9rem 1.5rem; padding-right: 6rem; border-bottom: 1px solid var(--border); background: var(--surface);
}
.topbar-logo { font-weight: 800; }
.main { max-width: 1100px; margin: 0 auto; padding: 2rem 1rem; }
.section-title { font-size: 1.2rem; margin: 0 0 1rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; }

.mono { font-family: ui-monospace, "SF Mono", Consolas, monospace; }
.recovery-key {
    font-size: 1.05rem; letter-spacing: .05rem; text-align: center; word-break: break-all;
    background: var(--bg); border: 1px dashed var(--accent); border-radius: var(--radius-sm);
    padding: .9rem; margin: 0 0 1rem; user-select: all;
}
.check { display: flex; gap: .6rem; align-items: flex-start; margin: 0 0 1rem; font-size: .88rem; }
.check input { width: auto; margin-top: .2rem; }
.sep { border: 0; border-top: 1px solid var(--border); margin: 1.5rem 0 .5rem; }

/* ---------- phase 2: app shell ---------- */
.no-js .js-only, .js .no-js, .js .no-js-btn { display: none !important; }
.topbar { flex-wrap: wrap; gap: .75rem; }
.topbar-logo { color: var(--text); text-decoration: none; }
.topbar-nav { display: flex; flex-wrap: wrap; gap: .35rem; align-items: center; flex: 1; }
.topbar-user { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.nav-btn, .icon-btn {
    color: var(--text2); text-decoration: none; padding: .35rem .7rem; border-radius: var(--radius-sm);
    border: 1px solid transparent; font-size: .88rem; white-space: nowrap;
}
.nav-btn:hover, .icon-btn:hover { color: var(--text); background: var(--bg); }
.nav-btn.active { color: var(--text); background: var(--bg); border-color: var(--border); font-weight: 600; }
.nav-acc { font-size: .82rem; }
.add-btn { color: var(--accent2); }
.nav-sep { color: var(--border); }
.avatar {
    width: 2rem; height: 2rem; border-radius: 50%; display: grid; place-items: center;
    background: var(--accent); color: #fff; font-weight: 700; font-size: .8rem;
}
.main.narrow { max-width: 720px; }
.breadcrumb { font-size: .85rem; color: var(--text3); margin-bottom: .75rem; }
.breadcrumb a { color: var(--text2); text-decoration: none; }
.section-title.flat { margin: 0; }
.gap-row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; margin-bottom: 1rem; }
.gap-row.center { justify-content: center; }
.spacer { flex: 1; }
.muted { color: var(--text2); }
.upper { text-transform: uppercase; letter-spacing: .04em; font-size: .75rem; }
.center { text-align: center; }
.pad { padding: 2rem !important; }
.small { font-size: .78rem; }
.nowrap { white-space: nowrap; }
.big { font-size: 1.8rem; font-weight: 800; }
.pos { color: var(--green); }
.neg { color: var(--red); }
.card { margin-bottom: 1rem; }
.card h2 { font-size: 1rem; margin: 0 0 .25rem; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; margin-top: 1rem; }
.card-grid .card { margin: 0; }
.card-link { color: inherit; text-decoration: none; display: block; margin-bottom: .75rem; }
.bank-totals { font-size: 1.15rem; font-weight: 800; margin-bottom: .75rem; }
.empty-state { text-align: center; padding: 4rem 1rem; color: var(--text2); }
.empty-icon { font-size: 3rem; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
select {
    width: 100%; padding: .6rem .7rem; background: var(--bg); color: var(--text);
    border: 1px solid var(--border); border-radius: var(--radius-sm); font: inherit;
}
input[type="file"] { border: 1px dashed var(--border); }
input[type="checkbox"], input[type="range"] { width: auto; }
.btn-danger { background: transparent; color: var(--red); border: 1px solid rgba(248, 113, 113, .5); }
.btn-danger:hover { background: rgba(248, 113, 113, .12); }
.btn:disabled { opacity: .5; cursor: default; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* charts */
.chart-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.chart-title { font-size: .9rem; color: var(--text2); margin: 0; }
.chart-total { font-size: 1.15rem; font-weight: 600; margin-bottom: .6rem; }
.chart-wrap { position: relative; height: 280px; }

/* range */
.range-slider { position: relative; height: 1.6rem; margin: .25rem 0 .75rem; }
.range-slider input[type="range"] {
    position: absolute; inset: 0; width: 100%; padding: 0; background: none; border: 0; pointer-events: none;
    -webkit-appearance: none; appearance: none;
}
.range-slider input[type="range"]::-webkit-slider-thumb { pointer-events: auto; -webkit-appearance: none; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); cursor: pointer; }
.range-slider input[type="range"]::-moz-range-thumb { pointer-events: auto; width: 16px; height: 16px; border: 0; border-radius: 50%; background: var(--accent); cursor: pointer; }
.range-slider::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 4px; margin-top: -2px; background: var(--border); border-radius: 2px; }
.range-form label { display: flex; gap: .4rem; align-items: center; font-size: .85rem; color: var(--text2); }
.range-form input[type="date"] { width: auto; padding: .35rem .5rem; }

/* tables */
.table-wrap { overflow-x: auto; }
.table-wrap.scroll-y { max-height: 420px; overflow-y: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { padding: .5rem .6rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { color: var(--text2); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; }
th a { color: inherit; text-decoration: none; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.filter-row th { padding-top: .25rem; padding-bottom: .5rem; }
.filter-row input { padding: .3rem .45rem; font-size: .8rem; min-width: 70px; }
td.actions { white-space: nowrap; text-align: right; }
td.actions .btn { margin-left: .2rem; }
.txn-future td { opacity: .5; font-style: italic; }
.txn-outside td { opacity: .55; }
.badge { display: inline-block; font-size: .72rem; padding: .1rem .45rem; border-radius: 99px; background: var(--bg); border: 1px solid var(--border); }
.badge-income { color: var(--green); }
.badge-outgoing { color: var(--red); }
.badge-transfer { color: var(--accent2); }
.badge-interest { color: #fbbf24; }
.pager { margin-top: .75rem; margin-bottom: 0; }
.pager select { width: auto; padding: .3rem .5rem; font-size: .8rem; }
.level { font-weight: 700; font-size: .72rem; text-transform: uppercase; }
.level-error { color: var(--red); }
.level-warn { color: #fbbf24; }
.level-info { color: var(--text2); }

/* add-transaction form */
.add-txn { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: .75rem; margin-bottom: 1rem; background: var(--bg); }
.add-grid, .add-txn fieldset { display: flex; flex-wrap: wrap; gap: .6rem; align-items: flex-end; }
.add-txn label { display: flex; flex-direction: column; gap: .25rem; font-size: .75rem; color: var(--text2); min-width: 130px; }
.add-txn label.grow { flex: 1; min-width: 200px; }
.add-txn fieldset { border: 1px dashed var(--border); border-radius: var(--radius-sm); margin: .75rem 0 0; padding: .6rem .75rem; }
.add-txn legend { font-size: .75rem; color: var(--accent2); padding: 0 .35rem; }
.add-txn fieldset .hint { flex-basis: 100%; margin: 0; }
.interest-preview { flex-basis: 100%; margin: 0; font-weight: 600; color: var(--green); }

/* preferences */
.pref-section h2 { font-size: 1rem; margin-bottom: .75rem; }
.danger-zone { border-color: rgba(248, 113, 113, .5); }

@media (max-width: 640px) {
    .row2 { grid-template-columns: 1fr; }
    .topbar { padding-right: 1rem; padding-top: 2.2rem; }
    .chart-wrap { height: 220px; }
    .add-txn label { min-width: 100%; }
}

/* The hidden attribute must win over component display rules (e.g. .add-txn fieldset { display:flex }). */
[hidden] { display: none !important; }
a.btn { text-decoration: none; }