:root {
    --bg: #0f1419;
    --surface: #1a2029;
    --surface-2: #242b36;
    --border: #2e3642;
    --text: #e6edf3;
    --text-dim: #8b96a5;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #10b981;
    --danger: #ef4444;
    --warn: #f59e0b;
    --mick: #8b5cf6;
    --lars: #06b6d4;
    --bank: #f59e0b;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 4px 20px rgba(0,0,0,.35);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.45;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ========= Auth page ========= */
.auth-body {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    min-height: 100vh;
    background: radial-gradient(circle at top, #1e293b 0%, var(--bg) 60%);
}
.auth-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow);
}
.auth-card h1 {
    margin: 0 0 4px;
    font-size: 24px;
    letter-spacing: -.01em;
}
.auth-card .subtitle {
    margin: 0 0 20px;
    color: var(--text-dim);
    font-size: 14px;
}
.auth-card form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.auth-card label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    color: var(--text-dim);
}
.auth-card input[type="password"] {
    padding: 11px 13px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text);
    font-size: 15px;
    font-family: inherit;
}
.auth-card input[type="password"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59,130,246,.2);
}

/* ========= Top bar ========= */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.topbar h1 {
    margin: 0;
    font-size: 18px;
    letter-spacing: -.01em;
}

/* ========= Layout ========= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ========= Buttons ========= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font: inherit;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    color: var(--text);
    background: var(--surface-2);
    transition: background .15s, border-color .15s, transform .05s;
}
.btn:hover { background: #2c3442; }
.btn:active { transform: translateY(1px); }
.btn.primary {
    background: var(--accent);
    color: #fff;
}
.btn.primary:hover { background: var(--accent-hover); }
.btn.ghost {
    background: transparent;
    border-color: var(--border);
    color: var(--text-dim);
}
.btn.ghost:hover { color: var(--text); border-color: #3d4758; }
.btn.danger {
    background: transparent;
    color: var(--danger);
    border-color: transparent;
}
.btn.danger:hover { background: rgba(239,68,68,.1); }
.btn.small {
    padding: 4px 9px;
    font-size: 13px;
    min-width: 30px;
}
button.btn[type="submit"] {
    width: 100%;
    padding: 12px;
}

/* ========= Alerts ========= */
.alert {
    padding: 10px 13px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 14px;
    border: 1px solid transparent;
}
.alert.error {
    background: rgba(239,68,68,.12);
    color: #fca5a5;
    border-color: rgba(239,68,68,.3);
}
.alert.notice {
    background: rgba(16,185,129,.12);
    color: #6ee7b7;
    border-color: rgba(16,185,129,.3);
}

/* ========= Totals ========= */
.totals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}
.total-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.total-card .label {
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.total-card .value {
    font-size: 18px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}
.total-card.highlight { border-left-color: var(--success); }
.total-card.highlight .value { color: var(--success); }
.total-card.mick { border-left-color: var(--mick); }
.total-card.lars { border-left-color: var(--lars); }
.total-card.bank { border-left-color: var(--bank); }
.total-card.mick-profit { border-left-color: var(--mick); opacity: .85; }
.total-card.lars-profit { border-left-color: var(--lars); opacity: .85; }

/* ========= Table section ========= */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    gap: 12px;
}
.section-header h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.table-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.tracker {
    width: 100%;
    border-collapse: collapse;
    font-variant-numeric: tabular-nums;
}
.tracker thead th {
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: .04em;
    padding: 12px 10px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.tracker tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background .12s;
}
.tracker tbody tr:last-child { border-bottom: none; }
.tracker tbody tr:hover { background: rgba(255,255,255,.02); }
.tracker td {
    padding: 8px 10px;
    vertical-align: middle;
}
.tracker td.calc {
    font-weight: 500;
    color: var(--text-dim);
}
.tracker td.calc.neg { color: #fca5a5; }

/* ========= Inline fields ========= */
.field {
    width: 100%;
    padding: 7px 9px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--text);
    font: inherit;
    font-size: 14px;
}
.field:hover { border-color: var(--border); background: var(--surface-2); }
.field:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--surface-2);
    box-shadow: 0 0 0 2px rgba(59,130,246,.2);
}
.field.num { text-align: right; }
.field.saving { border-color: var(--warn); }
.field.saved {
    border-color: var(--success);
    transition: border-color .5s;
}
select.field {
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--text-dim) 50%),
                      linear-gradient(135deg, var(--text-dim) 50%, transparent 50%);
    background-position: calc(100% - 14px) 50%, calc(100% - 10px) 50%;
    background-size: 4px 4px;
    background-repeat: no-repeat;
    padding-right: 22px;
}
select.field option { background: var(--surface); color: var(--text); }

/* checkbox */
.check {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}
.check input { position: absolute; opacity: 0; pointer-events: none; }
.check span {
    width: 22px;
    height: 22px;
    border-radius: 5px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    display: inline-block;
    position: relative;
    transition: background .15s, border-color .15s;
}
.check input:checked + span {
    background: var(--success);
    border-color: var(--success);
}
.check input:checked + span::after {
    content: "";
    position: absolute;
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.check input:focus + span {
    box-shadow: 0 0 0 2px rgba(59,130,246,.3);
}

.col-actions, .col-paid { width: 1%; white-space: nowrap; text-align: center; }

/* ========= Legend ========= */
.legend {
    margin-top: 24px;
    color: var(--text-dim);
    font-size: 14px;
}
.legend details {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
}
.legend summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--text);
}
.legend ul { margin: 10px 0 0; padding-left: 20px; }
.legend li { margin: 4px 0; }

/* ========= Toast ========= */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    font-size: 14px;
    opacity: 0;
    transition: transform .25s ease, opacity .25s;
    pointer-events: none;
    z-index: 100;
}
.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}
.toast.error { border-color: var(--danger); color: #fca5a5; }
.toast.success { border-color: var(--success); color: #6ee7b7; }

/* ========= Mobile ========= */
@media (max-width: 760px) {
    .container { padding: 14px; }
    .totals-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .total-card { padding: 10px 12px; }
    .total-card .value { font-size: 15px; }

    .tracker thead { display: none; }
    .tracker, .tracker tbody, .tracker tr, .tracker td { display: block; width: 100%; }
    .tracker tr {
        padding: 12px;
        border-bottom: 1px solid var(--border);
        position: relative;
    }
    .tracker td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 4px 0;
        gap: 12px;
    }
    .tracker td::before {
        content: attr(data-label);
        font-size: 12px;
        color: var(--text-dim);
        text-transform: uppercase;
        letter-spacing: .04em;
        font-weight: 600;
        flex: 0 0 auto;
    }
    .tracker td .field { max-width: 55%; }
    .tracker td.calc { justify-content: space-between; }
    .tracker td.col-actions {
        position: absolute;
        top: 8px;
        right: 8px;
        padding: 0;
    }
    .tracker td.col-actions::before { display: none; }
    .section-header h2 { font-size: 16px; }
}

@media (max-width: 380px) {
    .totals-grid { grid-template-columns: 1fr; }
}

/* ========= Focus ring for accessibility ========= */
button:focus-visible, a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}