:root {
    --primary: #0D47A1;
    --on-primary: #FFFFFF;
    --primary-container: #D8E2FF;
    --on-primary-container: #001A41;
    --background: #FDFBFF;
    --on-background: #1A1B1F;
    --surface: #FFFFFF;
    --surface-container: #EFEDF4;
    --surface-container-high: #E9E7EF;
    --on-surface-variant: #44474F;
    --outline: #74777F;
    --outline-variant: #C4C6D0;
    --error: #BA1A1A;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary: #AEC6FF;
        --on-primary: #002E69;
        --primary-container: #004494;
        --on-primary-container: #D8E2FF;
        --background: #121316;
        --on-background: #E3E2E6;
        --surface: #1E1F23;
        --surface-container: #1E1F23;
        --surface-container-high: #282A2D;
        --on-surface-variant: #C4C6D0;
        --outline: #8E9099;
        --outline-variant: #44474F;
        --error: #FFB4AB;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-variant-numeric: tabular-nums;
    background: var(--background);
    color: var(--on-background);
    padding-bottom: env(safe-area-inset-bottom);
}

#app {
    max-width: 640px;
    margin: 0 auto;
    padding: 0 16px 96px;
}

.loading {
    padding: 48px 16px;
    text-align: center;
    color: var(--on-surface-variant);
}

header.bar {
    position: sticky;
    top: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: calc(env(safe-area-inset-top) + 12px) 0 12px;
    background: var(--background);
}

header.bar h1 {
    margin: 0;
    font-size: 22px;
    font-weight: 600;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

header.bar .subtitle {
    display: block;
    font-size: 13px;
    font-weight: 400;
    color: var(--on-surface-variant);
}

button {
    font: inherit;
    cursor: pointer;
    border-radius: 20px;
    border: none;
    padding: 10px 20px;
    background: var(--primary);
    color: var(--on-primary);
}

button.ghost {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--outline-variant);
}

button.icon {
    background: transparent;
    color: var(--on-background);
    border: none;
    padding: 6px 10px;
    font-size: 20px;
    line-height: 1;
}

button:disabled {
    opacity: 0.4;
    cursor: default;
}

.card {
    background: var(--surface-container);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 12px;
}

.card.link {
    cursor: pointer;
}

.row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.row.top {
    align-items: flex-start;
}

.grow {
    flex: 1;
    min-width: 0;
}

.title {
    font-size: 16px;
    font-weight: 600;
}

.muted {
    color: var(--on-surface-variant);
    font-size: 13px;
}

.dim {
    color: var(--outline);
}

.amount {
    font-size: 16px;
    font-weight: 600;
}

.amount.due {
    color: var(--primary);
}

.pill {
    display: inline-block;
    margin-top: 6px;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 13px;
    background: var(--primary-container);
    color: var(--on-primary-container);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    flex: none;
}

.banner {
    display: flex;
    gap: 10px;
    align-items: center;
    background: var(--surface-container-high);
    color: var(--on-surface-variant);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 12px;
    font-size: 14px;
}

.banner .warn {
    color: var(--error);
    font-size: 18px;
}

label.field {
    display: block;
    font-size: 12px;
    color: var(--on-surface-variant);
    margin-bottom: 4px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[inputmode="decimal"] {
    font: inherit;
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    border: 1px solid var(--outline-variant);
    background: var(--surface);
    color: var(--on-background);
}

input:focus {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}

input.error {
    border-color: var(--error);
}

input.end-input {
    width: 92px;
    flex: none;
    text-align: right;
    padding: 8px 10px;
}

.start-line {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
    border-radius: 0;
    padding: 4px 0;
    color: var(--on-surface-variant);
    font: inherit;
    font-size: 14px;
    white-space: nowrap;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    text-align: left;
}

.error-text {
    color: var(--error);
    font-size: 13px;
    margin-top: 6px;
}

.bottom {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px calc(env(safe-area-inset-bottom) + 12px);
    background: var(--surface-container-high);
}

.bottom .total {
    flex: 1;
}

.bottom .total .muted {
    font-size: 12px;
}

.bottom .total .value {
    font-size: 20px;
    font-weight: 600;
}

.empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--on-surface-variant);
}

.empty .big {
    font-size: 40px;
    margin-bottom: 12px;
}

form.auth {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 15vh;
}

form.auth h1 {
    text-align: center;
    margin: 0 0 8px;
}

dialog {
    border: none;
    border-radius: 20px;
    padding: 24px;
    background: var(--surface-container-high);
    color: var(--on-background);
    max-width: 320px;
    width: calc(100% - 48px);
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.5);
}

dialog h2 {
    margin: 0 0 4px;
    font-size: 18px;
}

dialog .actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
}

.toast {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 88px;
    max-width: 608px;
    margin: 0 auto;
    background: var(--surface-container-high);
    color: var(--on-background);
    border-radius: 12px;
    padding: 14px 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.overlay .dialog {
    background: var(--surface-container);
    color: var(--on-background);
    border-radius: 20px;
    padding: 20px;
    width: 100%;
    max-width: 360px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.overlay .year {
    text-align: center;
    font-size: 20px;
    font-weight: 600;
}

.months {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

button.month {
    padding: 10px 4px;
    font-size: 14px;
}

button.month.pick {
    outline: 2px solid var(--on-primary);
    outline-offset: -5px;
    font-weight: 700;
}

button.month:disabled {
    opacity: 0.4;
}