:root {
    --primary: #1f4aff;
    --primary-soft: #e3e8ff;
    --text-main: #1f2933;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --danger: #dc2626;
    --shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
}

body {
    min-height: 100vh;
    background: radial-gradient(circle at top,
            #eef2ff 0,
            #f9fafb 55%,
            #f3f4f6 100%);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
        sans-serif;
    color: var(--text-main);
}

.calculator-card {
    background: #1b1d1d;
    border-radius: 16px;
    border: 2px solid white;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.text-muted {
    font-size: 16px;
}


.term-button {
    flex: 1;
    min-width: 90px;
    padding: 16px;
    text-align: center;
    font-weight: 600;
    font-size: 20px;
    border: 2px solid var(--border);
    border-radius: 12px;
    /* background: white; */
    cursor: pointer;
    transition: all 0.2s;
}

.term-button.active {
    border-color: var(--primary);
    background: var(--primary-soft);
    color: var(--primary);
}

.term-button:hover:not(.active) {
    border-color: #cbd5e1;
}

.outputs-card {
    background-color: #272626;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
}

.figure-main {
    font-size: 2rem;
    font-weight: 700;
}

.badge-custom {
    font-size: 0.9rem;
    padding: 8px 12px;
    border-radius: 999px;
    background: #eff6ff;
    color: #1d4ed8;
    font-weight: 500;
}

.badge-custom strong {
    font-weight: 600;
}

.hint {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.error {
    font-size: 0.8rem;
    color: var(--danger);
}

.form-lable {
    font-size: 16px;
}

.input-group {
    width: 100%;
    display: flex;

}

.input-group span {
    background: #6b7280;
    padding: 8px 12px;

}

.input-group input {
    width: 100%;
    color: black;
    font-size: 20px;
    padding: 0px 10px;
}

.form-range {
    width: 100%;
}

.small {
    font-size: 14px;
}