:root {
    color-scheme: light;
    --ink: #17384b;
    --blue: #3f7cff;
    --gold: #dfbf8f;
    --muted: #64748b;
    --line: #dbe3ea;
    --surface: #ffffff;
    --background: #f4f7fa;
    --danger: #b42318;
    --success: #027a48;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px 18px;
    background: linear-gradient(145deg, #edf4f8 0%, var(--background) 55%, #f8f2e9 100%);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell { width: min(100%, 460px); }
.brand { margin-bottom: 22px; text-align: center; }
.brand-mark { font-size: 1.5rem; font-weight: 800; letter-spacing: -.035em; }
.brand-product { margin-top: 4px; color: var(--muted); font-size: .88rem; letter-spacing: .08em; text-transform: uppercase; }

.card {
    padding: 34px;
    border: 1px solid rgba(23, 56, 75, .1);
    border-radius: 18px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 22px 60px rgba(23, 56, 75, .12);
}

h1 { margin: 0 0 8px; font-size: 1.65rem; letter-spacing: -.025em; }
p { line-height: 1.55; }
.intro { margin: 0 0 24px; color: var(--muted); }
label { display: block; margin: 17px 0 7px; font-size: .9rem; font-weight: 700; }
input[type="email"], input[type="password"], input[type="text"] {
    width: 100%;
    padding: 12px 13px;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: #fff;
    color: #172b3a;
    font: inherit;
}
input:focus { outline: 3px solid rgba(63, 124, 255, .16); border-color: var(--blue); }
.check { display: flex; gap: 9px; align-items: center; margin: 18px 0; color: var(--muted); font-weight: 500; }
.button {
    display: inline-flex;
    justify-content: center;
    width: 100%;
    margin-top: 20px;
    padding: 12px 16px;
    border: 0;
    border-radius: 9px;
    background: var(--ink);
    color: #fff;
    font: inherit;
    font-weight: 750;
    cursor: pointer;
    text-decoration: none;
}
.button:hover { background: #0e2b3c; }
.button.secondary { background: var(--blue); }
.button.google { margin-top: 0; border: 1px solid var(--line); background: #fff; color: #243746; }
.button.google:hover { background: #f8fafc; }
.divider { display: flex; align-items: center; gap: 12px; margin: 22px 0; color: var(--muted); font-size: .82rem; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.alert { margin: 0 0 18px; padding: 12px 14px; border-radius: 9px; font-size: .92rem; }
.alert.error { background: #fef3f2; color: var(--danger); }
.alert.success { background: #ecfdf3; color: var(--success); }
.meta { margin-top: 22px; color: var(--muted); font-size: .84rem; text-align: center; }
.account { margin: 22px 0; padding: 15px; border: 1px solid var(--line); border-radius: 10px; background: #f8fafc; }
.account strong { display: block; margin-bottom: 4px; }
.inline-form { margin: 0; }

@media (max-width: 520px) {
    body { padding: 18px 12px; }
    .card { padding: 25px 20px; }
}