:root {
    --background: #ffffff;
    --surface: #ffffff;
    --text: #18212f;
    --muted: #637083;
    --border: #d9e1e8;
    --accent: #1769aa;
    --accent-dark: #0d4f85;
    --focus: #f1b24a;
    --error: #b42318;
    color-scheme: light;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

.container, .form-container { width: min(calc(100% - 1rem), 960px); margin-inline: auto; }

.property-form { display: grid; gap: 1rem; padding: .5rem 0; }
.form-section { padding: clamp(1.25rem, 4vw, 2rem); background: var(--surface); border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 8px 26px rgba(28, 48, 70, .06); }
h2 { margin: 0 0 1.25rem; font-size: 1.35rem; }
h3 { margin: 0 0 1rem; font-size: 1.1rem; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem 1.25rem; }
.field { display: flex; flex-direction: column; gap: .4rem; }
.field-wide { grid-column: 1 / -1; }
label { font-weight: 650; }
label span { color: #b42318; }

input, select, textarea {
    width: 100%;
    min-height: 46px;
    padding: .7rem .8rem;
    border: 1px solid #aeb9c5;
    border-radius: 8px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

textarea { resize: vertical; }
input[type="file"] { padding: .55rem; }
input:focus, select:focus, textarea:focus { outline: 3px solid color-mix(in srgb, var(--focus) 55%, transparent); border-color: var(--accent); }
.hint { margin: 0; color: var(--muted); font-size: .9rem; }
.errorlist { margin: 0; padding: 0; color: var(--error); font-size: .9rem; list-style: none; }
.field:has(.errorlist) input, .field:has(.errorlist) select, .field:has(.errorlist) textarea { border-color: var(--error); }
.form-errors { padding: 1rem; border: 1px solid #f0aaa4; border-radius: 8px; background: #fff1f0; color: var(--error); }

.conditional-section { margin-top: 1.5rem; padding: 1.25rem; border: 1px dashed #9eb6c9; border-radius: 10px; background: #f7fbfe; }
.conditional-section[hidden] { display: none; }
.conditional-fields { margin-top: 1rem; }
.conditional-fields[hidden], .field[hidden] { display: none; }
.checkbox-field { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: .65rem; }
.checkbox-field input[type="checkbox"] { width: 1.2rem; min-height: 1.2rem; margin: 0; }
.checkbox-field .errorlist { grid-column: 1 / -1; }
[hidden] { display: none !important; }

.choice-field { margin: 1.5rem 0 0; padding: 0; border: 0; }
.choice-field legend { margin-bottom: .65rem; font-weight: 750; }
.choice-field legend span { color: var(--error); }
.choice-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem 1rem; }
.choice-list > div { min-width: 0; }
.choice-list label { display: grid; grid-template-columns: auto 1fr; align-items: start; gap: .55rem; font-weight: 500; cursor: pointer; }
.choice-list input[type="radio"], .choice-list input[type="checkbox"] {
    width: 1.1rem;
    min-height: 1.1rem;
    margin: .18rem 0 0;
}
.conditional-path > .field, .conditional-path > .choice-field + .field { margin-top: .85rem; }
.subsection + .subsection { margin-top: 1.75rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.subsection h3 { margin-bottom: .85rem; }
.form-section ul { margin: .5rem 0 1.25rem; padding-left: 1.3rem; }
.form-section li + li { margin-top: .25rem; }

.form-actions { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .5rem 0; }
.form-actions p { margin: 0; color: var(--muted); font-size: .9rem; }
button { min-height: 48px; padding: .75rem 1.4rem; border: 0; border-radius: 8px; background: var(--accent); color: #fff; font: inherit; font-weight: 750; cursor: pointer; }
button:hover { background: var(--accent-dark); }
button:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

.success-page { display: grid; min-height: 100vh; place-items: center; padding-block: 2rem; }
.success-card { width: min(100%, 680px); text-align: center; }
.success-card h1 { margin-inline: auto; font-size: clamp(1.8rem, 5vw, 2.75rem); }
.success-card p:not(.eyebrow) { margin: 1rem auto 1.5rem; color: var(--muted); }
.eyebrow { margin: 0 0 .35rem; font-size: .85rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.success-eyebrow { color: var(--accent); }
.button-link { display: inline-flex; min-height: 48px; align-items: center; padding: .75rem 1.4rem; border-radius: 8px; background: var(--accent); color: #fff; font-weight: 750; text-decoration: none; }
.button-link:hover { background: var(--accent-dark); }
.button-link:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

@media (max-width: 640px) {
    .container, .form-container { width: min(calc(100% - .5rem), 960px); }
    .property-form { gap: .75rem; padding-block: .25rem; }
    .form-section { padding: 1rem; border-radius: 10px; }
    .form-grid { grid-template-columns: 1fr; }
    .choice-list { grid-template-columns: 1fr; }
    .field-wide { grid-column: auto; }
    .form-actions { align-items: stretch; flex-direction: column; }
    button { width: 100%; }
}