/* ---- Tokens ---- */
:root {
    --paper: #F3F5F3;
    --paper-raised: #FFFFFF;
    --ink: #1D2521;
    --ink-muted: #5B6660;
    --line: #D9DCD5;
    --income: #0F5C4C;
    --income-bg: #E7F1EC;
    --expense: #A6402E;
    --expense-bg: #F5E9E5;
    --accent: #C98A2C;
    --radius: 3px;
    --sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
    --mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    line-height: 1.45;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.wrap {
    max-width: 640px;
    margin: 0 auto;
    padding: 20px 18px 60px;
}

/* ---- Top bar ---- */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 18px;
    border-bottom: 1px solid var(--line);
    background: var(--paper-raised);
}
.brand {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 1.05rem;
    text-decoration: none;
    letter-spacing: 0.02em;
}
.logout-link {
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--ink-muted);
    border-bottom: 1px solid var(--line);
}
.logout-link:hover { color: var(--ink); border-color: var(--ink); }

/* ---- Login ---- */
.login-screen {
    min-height: calc(100vh - 90px);
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-card {
    width: 100%;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.login-card h1 {
    font-family: var(--mono);
    margin: 0;
    font-size: 1.6rem;
}
.login-card .muted { color: var(--ink-muted); margin: 0 0 8px; font-size: 0.9rem; }

label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--ink-muted);
}

input, select, button {
    font-family: var(--sans);
    font-size: 1rem;
}

input[type="text"], input[type="password"], input[type="number"], input[type="date"] {
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper-raised);
    color: var(--ink);
}
input:focus, select:focus, button:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.static-date {
    padding: 10px 12px;
    border: 1px dashed var(--line);
    border-radius: var(--radius);
    background: var(--paper);
    color: var(--ink);
    font-family: var(--mono);
    font-size: 0.9rem;
}

button {
    cursor: pointer;
    border: none;
}

.login-card button, .txn-form button {
    margin-top: 6px;
    padding: 12px 16px;
    background: var(--ink);
    color: var(--paper);
    border-radius: var(--radius);
    font-weight: 600;
}
.login-card button:hover, .txn-form button:hover { background: #000; }

.error { color: var(--expense); font-size: 0.9rem; }
.success { color: var(--income); }

/* ---- Month picker ---- */
.month-picker { margin: 4px 0 16px; }
.month-picker select {
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper-raised);
    color: var(--ink);
    font-family: var(--mono);
}

/* ---- Hero savings card ---- */
.hero {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-left: 4px solid var(--income);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.hero.negative { border-left-color: var(--expense); }
.hero-label {
    font-size: 0.8rem;
    color: var(--ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.hero-amount {
    font-family: var(--mono);
    font-size: 2.4rem;
    font-weight: 600;
    line-height: 1.1;
}
.hero.positive .hero-amount { color: var(--income); }
.hero.negative .hero-amount { color: var(--expense); }
.hero-breakdown {
    display: flex;
    gap: 20px;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--ink-muted);
}
.hero-breakdown strong { font-family: var(--mono); color: var(--ink); }

/* ---- Action tiles ---- */
.tiles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.tile {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper-raised);
    text-decoration: none;
    color: var(--ink);
    transition: border-color 0.15s ease;
}
.tile:hover { border-color: var(--ink); }
.tile-add {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
}
.tile-icon {
    font-family: var(--mono);
    font-size: 1.3rem;
    line-height: 1;
}
.tile-amount {
    font-family: var(--mono);
    font-size: 1.3rem;
    font-weight: 600;
}

/* ---- Page title / back link ---- */
.back-link {
    display: inline-block;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--ink-muted);
    text-decoration: none;
}
.back-link:hover { color: var(--ink); }
.page-title {
    font-family: var(--mono);
    font-size: 1.3rem;
    margin: 0 0 16px;
}
.expense-heading { color: var(--expense); }
.income-heading { color: var(--income); }

/* ---- Type toggle (add page) ---- */
.type-toggle {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}
.toggle-btn {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper-raised);
    color: var(--ink-muted);
    font-weight: 600;
}
.toggle-btn.active {
    border-color: var(--ink);
    color: var(--ink);
    background: var(--paper);
}

.txn-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ---- Ledger list (expense/income/savings pages) ---- */
.ledger {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--line);
}
.ledger-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
}
.ledger-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.ledger-category { font-weight: 600; }
.ledger-date, .ledger-note {
    font-size: 0.8rem;
    color: var(--ink-muted);
}
.ledger-note {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.ledger-amount {
    font-family: var(--mono);
    font-weight: 600;
    white-space: nowrap;
}
.expense-amount { color: var(--expense); }
.income-amount { color: var(--income); }

.delete-form { margin: 0; }
.delete-btn {
    background: none;
    color: var(--ink-muted);
    font-size: 1.2rem;
    line-height: 1;
    padding: 4px 6px;
    border-radius: var(--radius);
}
.delete-btn:hover { color: var(--expense); background: var(--expense-bg); }

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

/* ---- Chart card (trend page) ---- */
.chart-card {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 20px;
}

/* ---- Secondary link under the tiles ---- */
.secondary-link {
    display: inline-block;
    margin-top: 14px;
    font-size: 0.85rem;
    color: var(--ink-muted);
    text-decoration: none;
    border-bottom: 1px solid var(--line);
}
.secondary-link:hover { color: var(--ink); border-color: var(--ink); }

/* ---- Responsive: desktop widens the canvas a touch ---- */
@media (min-width: 720px) {
    .wrap { padding-top: 32px; }
    .hero-amount { font-size: 3rem; }
    .tiles { grid-template-columns: repeat(4, 1fr); }
    .tile-add { grid-column: span 1; flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}