:root {
    color-scheme: light;
    --navy: #0c1a2d;
    --blue: #0969da;
    --blue-dark: #0759b9;
    --text: #172033;
    --muted: #667085;
    --line: #d8dee8;
    --surface: #ffffff;
    --background: #f3f5f8;
    --success-bg: #ecfdf3;
    --success: #067647;
    --error-bg: #fef3f2;
    --error: #b42318;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--background);
    color: var(--text);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.55;
}

.topbar {
    background: var(--navy);
    color: #fff;
    padding: 14px max(20px, calc((100vw - 900px) / 2));
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    text-decoration: none;
    font-size: 1.16rem;
    font-weight: 750;
}

.brand__mark { width: 34px; height: 34px; }
.brand__shield { fill: #fff; }
.brand__letter { fill: var(--navy); }

.page-shell {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 36px 20px;
    flex: 1;
}

.card {
    background: var(--surface);
    border: 1px solid #e4e8ef;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(12, 26, 45, .08);
    padding: clamp(24px, 5vw, 48px);
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--blue);
    font-size: .83rem;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
}

h1, h2 { color: var(--navy); line-height: 1.2; }
h1 { margin: 0 0 16px; font-size: clamp(1.75rem, 5vw, 2.5rem); }
h2 { margin: 0 0 12px; font-size: 1.18rem; }
.lead { margin: 0 0 30px; color: #344054; font-size: 1.04rem; }

form { display: grid; gap: 9px; }
label { margin-top: 10px; font-weight: 700; }
label span { color: var(--muted); font-size: .88rem; font-weight: 500; }

input, textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: #fff;
    color: var(--text);
    font: inherit;
    padding: 12px 13px;
    transition: border-color .15s, box-shadow .15s;
}

textarea { resize: vertical; min-height: 108px; }
input:focus, textarea:focus {
    outline: none;
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, .14);
}

.primary-button {
    justify-self: start;
    margin-top: 18px;
    border: 0;
    border-radius: 9px;
    background: var(--blue);
    color: #fff;
    padding: 13px 20px;
    font: inherit;
    font-weight: 750;
    cursor: pointer;
}

.primary-button:hover { background: var(--blue-dark); }
.primary-button:focus-visible { outline: 3px solid rgba(9, 105, 218, .28); outline-offset: 2px; }
.primary-button:disabled { cursor: wait; opacity: .68; }

.trap {
    position: absolute !important;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.message {
    margin-top: 24px;
    padding: 14px 16px;
    border-radius: 9px;
    font-weight: 650;
}
.message--success { background: var(--success-bg); color: var(--success); }
.message--error { background: var(--error-bg); color: var(--error); }

.confirmation-view {
    padding: 22px;
    border: 1px solid #b8cff3;
    border-radius: 12px;
    background: #f2f7ff;
}
.confirmation-view p { margin: 0; }

.information {
    margin-top: 36px;
    padding-top: 26px;
    border-top: 1px solid var(--line);
    color: #475467;
}
.information p { margin: 0 0 13px; }

footer {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    color: var(--muted);
    font-size: .9rem;
}
footer a { color: var(--blue); }

@media (max-width: 520px) {
    .page-shell { padding: 20px 12px; }
    .card { border-radius: 13px; padding: 24px 19px; }
    .primary-button { width: 100%; justify-self: stretch; }
    footer { flex-direction: column; align-items: center; }
}