:root {
    --bg: #f4f6fb;
    --card: #ffffff;
    --text: #1c2333;
    --muted: #6b7a90;
    --border: #e2e7f0;
    --accent: #3b6cf6;
    --accent-hover: #2b58d6;
    --danger: #e5484d;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(20, 30, 60, 0.06), 0 8px 24px rgba(20, 30, 60, 0.05);
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 24px 16px;
    background: var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.app {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.2fr 1fr;
    gap: 20px;
    align-items: start;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.card__title {
    margin: 0 0 4px;
    font-size: 16px;
    font-weight: 600;
}

.card--result {
    background: linear-gradient(135deg, #3b6cf6 0%, #5b8bff 100%);
    border: none;
    color: #fff;
}

.card--result .card__title {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field label {
    font-size: 13px;
    color: var(--muted);
    font-weight: 500;
}

.field--checkbox {
    flex-direction: row;
}

.row {
    display: grid;
    grid-template-columns: 1fr 140px;
    gap: 8px;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fbfcfe;
    font-size: 16px;
    font-family: inherit;
    color: var(--text);
    transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
    outline: none;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(59, 108, 246, 0.12);
}

.checkbox {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
    font-size: 14px;
    color: var(--text);
    min-height: 24px;
}

.checkbox input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkbox span::before {
    content: "";
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 1px solid var(--border);
    border-radius: 5px;
    background: #fbfcfe;
    margin-right: 10px;
    vertical-align: -4px;
    transition: background 0.15s, border-color 0.15s;
}

.checkbox input:checked + span::before {
    background: var(--accent) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='3 8.5 6.5 12 13 4.5'/></svg>") center / 14px no-repeat;
    border-color: var(--accent);
}

.subsection {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.subsection__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    font-weight: 500;
    color: var(--muted);
    gap: 8px;
}

.rows {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn {
    border: none;
    border-radius: 8px;
    padding: 9px 14px;
    font-size: 14px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    background: var(--accent);
    color: #fff;
    transition: background 0.15s, transform 0.05s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn:hover {
    background: var(--accent-hover);
}

.btn:active {
    transform: translateY(1px);
}

.btn--small {
    padding: 6px 12px;
    font-size: 13px;
    background: #eef2fb;
    color: var(--accent);
}

.btn--small:hover {
    background: #e2e9fa;
}

.topup-row,
.withdrawal-row {
    display: grid;
    grid-template-columns: 1fr 1.3fr 1.2fr 32px;
    gap: 8px;
    align-items: center;
}

.topup-row input,
.withdrawal-row input,
.topup-row select,
.withdrawal-row select {
    padding: 8px 10px;
    font-size: 15px;
    min-width: 0;
}

.tu-remove,
.wd-remove {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fbfcfe;
    color: var(--muted);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.tu-remove:hover,
.wd-remove:hover {
    background: #fdeaea;
    color: var(--danger);
    border-color: #f5c5c6;
}

.result-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.result-item__label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 4px;
}

.result-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.result-dot--invested {
    background: #ffffff;
}

.result-dot--percent {
    background: #ffd966;
}

.result-item__value {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
    word-break: break-word;
}

.pie {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.pie__svg {
    width: 140px;
    height: 140px;
    transform: rotate(-90deg);
    flex-shrink: 0;
}

.pie__bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.18);
    stroke-width: 3.8;
}

.pie__seg {
    fill: none;
    stroke-width: 3.8;
    stroke-linecap: butt;
    transition: stroke-dasharray 0.4s ease, stroke-dashoffset 0.4s ease;
}

.pie__seg--invested {
    stroke: #ffffff;
}

.pie__seg--percent {
    stroke: #ffd966;
}

@media (max-width: 960px) {
    .app {
        grid-template-columns: 1fr;
        max-width: 640px;
    }
}

@media (max-width: 560px) {
    body {
        padding: 12px 10px 24px;
        font-size: 16px;
    }

    .app {
        gap: 12px;
    }

    .card {
        padding: 16px;
        gap: 12px;
        border-radius: 10px;
    }

    .card__title {
        font-size: 15px;
    }

    .row {
        grid-template-columns: 1fr;
    }

    .topup-row,
    .withdrawal-row {
        grid-template-columns: 1fr 1fr;
        grid-template-areas:
            "sum sum"
            "date period"
            "remove remove";
        gap: 6px;
        padding: 10px;
        border: 1px solid var(--border);
        border-radius: 10px;
        background: #fafbfe;
    }

    .topup-row .tu-sum,
    .withdrawal-row .wd-sum {
        grid-area: sum;
    }

    .topup-row .tu-date,
    .withdrawal-row .wd-date {
        grid-area: date;
    }

    .topup-row .tu-period,
    .withdrawal-row .wd-period {
        grid-area: period;
    }

    .topup-row .tu-remove,
    .withdrawal-row .wd-remove {
        grid-area: remove;
        width: 100%;
        height: 36px;
        font-size: 15px;
    }

    .topup-row input,
    .withdrawal-row input,
    .topup-row select,
    .withdrawal-row select {
        padding: 10px 12px;
        font-size: 16px;
    }

    .subsection__head {
        font-size: 13px;
    }

    .btn,
    .btn--small {
        padding: 10px 14px;
        font-size: 14px;
        min-height: 40px;
    }

    .result-item__value {
        font-size: 22px;
    }

    .pie__svg {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 360px) {
    .topup-row,
    .withdrawal-row {
        grid-template-columns: 1fr;
        grid-template-areas:
            "sum"
            "date"
            "period"
            "remove";
    }
}