:root {
    --blue: #0099ff;
    --blue-dark: #0074c2;
    --text: #1f2933;
    --muted: #5f6b7a;
    --border: #d7dee8;
    --bg: #f5f8fb;
    --card: #ffffff;
    --error: #9f1239;
    --error-bg: #fff1f2;
    --success-bg: #ecfdf5;
    --success: #047857;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
}

a {
    color: var(--blue-dark);
}

.site-header,
.site-footer {
    max-width: 860px;
    margin: 0 auto;
    padding: 24px 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
}

.brand-mark {
    display: inline-grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border-radius: 50%;
    background: var(--blue);
    color: #ffffff;
}

.site-main {
    max-width: 860px;
    margin: 0 auto;
    padding: 10px 20px 40px;
}

.hero {
    margin: 28px auto;
    text-align: center;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--blue-dark);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 0;
    font-size: clamp(2rem, 6vw, 4rem);
    line-height: 1.05;
}

.hero-copy {
    max-width: 620px;
    margin: 18px auto 0;
    color: var(--muted);
    font-size: 1.05rem;
}

.calculator-card,
.site-note {
    max-width: 680px;
    margin: 0 auto 28px;
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--card);
    box-shadow: 0 18px 50px rgba(31, 41, 51, 0.08);
}

.calculator-card h2,
.site-note h2 {
    margin: 0 0 20px;
    text-align: center;
}

.status-banner {
    margin-bottom: 20px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #f8fafc;
    color: var(--muted);
    font-size: 0.92rem;
    text-align: center;
}

.status-banner.is-ready {
    border-color: #a7f3d0;
    background: var(--success-bg);
    color: var(--success);
}

.status-banner.is-error {
    border-color: #fecdd3;
    background: var(--error-bg);
    color: var(--error);
}

.field-row,
.result-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 170px;
    gap: 18px;
    align-items: center;
    padding: 13px 0;
    border-top: 1px solid #eef2f7;
    font-size: 0.95rem;
}

.field-row:first-of-type {
    border-top: 0;
}

.field-row input,
.field-row select {
    width: 100%;
    min-height: 42px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #ffffff;
    color: var(--text);
    font: inherit;
    text-align: right;
}

.field-row select {
    text-align: left;
}

.field-row input:focus,
.field-row select:focus {
    outline: 0;
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(0, 153, 255, 0.18);
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    margin: 0;
    -webkit-appearance: none;
}

input[type="number"] {
    -moz-appearance: textfield;
}

.valuation-note {
    margin: 18px 0 4px;
    color: var(--muted);
    font-size: 0.93rem;
    text-align: center;
}

#override {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--blue-dark);
    cursor: pointer;
    font: inherit;
    font-style: italic;
    text-decoration: underline;
}

.calculate-button {
    width: 100%;
    margin-top: 22px;
    padding: 18px;
    border: 0;
    border-radius: 10px;
    background: var(--blue);
    color: #ffffff;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
}

.calculate-button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.recommendation {
    margin: 24px 0 0;
    color: var(--text);
    font-size: 1.35rem;
    text-align: center;
}

.recommendation strong {
    color: var(--blue-dark);
}

.secondary-result {
    margin-top: 10px;
    color: var(--muted);
    text-align: center;
}

.secondary-result p {
    margin: 6px 0;
}

.site-note {
    color: var(--muted);
}

.updated-note {
    margin-bottom: 0;
    font-size: 0.9rem;
}

.site-footer {
    color: var(--muted);
    font-size: 0.88rem;
    text-align: center;
}

.mobile-only {
    display: none;
}

@media (max-width: 700px) {
    .calculator-card,
    .site-note {
        padding: 22px 16px;
        border-radius: 14px;
    }

    .field-row,
    .result-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .field-row input,
    .field-row select,
    .result-row strong {
        text-align: left;
    }

    .mobile-only {
        display: inline;
    }
}