:root {
    --ink: #102b49;
    --muted: #718095;
    --paper: #fffdf9;
    --line: #e7dfd2;
    --blue: #2598f5;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 20% 10%, rgba(255, 230, 191, .7), transparent 30%),
        linear-gradient(135deg, #fbfaf7, #f0eadf);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(430px, 100%);
    padding: 42px;
    background: rgba(255, 253, 249, .94);
    border: 1px solid rgba(231, 223, 210, .9);
    border-radius: 28px;
    box-shadow: 0 28px 70px rgba(70, 54, 35, .12);
}

.auth-brand {
    color: var(--ink);
    text-decoration: none;
    font-size: 42px;
    font-weight: 850;
    letter-spacing: -.06em;
}

.auth-brand span {
    margin-left: 6px;
    font-size: 18px;
    vertical-align: top;
}

.eyebrow {
    margin: 34px 0 8px;
    color: var(--blue);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .14em;
}

h1 {
    margin: 0 0 10px;
    font-size: 32px;
    letter-spacing: -.035em;
}

.subtitle {
    margin: 0 0 28px;
    color: var(--muted);
    line-height: 1.5;
}

.login-form {
    display: grid;
    gap: 18px;
}

.login-form label {
    display: grid;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
}

.login-form input {
    width: 100%;
    min-height: 50px;
    padding: 0 15px;
    border: 1px solid var(--line);
    border-radius: 13px;
    outline: none;
    background: #fff;
    color: var(--ink);
    font: inherit;
}

.login-form input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 4px rgba(37, 152, 245, .12);
}

.login-form button {
    min-height: 54px;
    margin-top: 6px;
    border: 0;
    border-radius: 999px;
    background: var(--blue);
    color: #fff;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 12px 26px rgba(37, 152, 245, .22);
}

.login-form button span {
    margin-left: 12px;
}

.message {
    margin: 0 0 18px;
    padding: 13px 15px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.45;
}

.message.error {
    background: #fff0ed;
    color: #9a3d2e;
}

.message.warning {
    background: #fff5dc;
    color: #795819;
}

code {
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.back-link {
    display: inline-block;
    margin-top: 26px;
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
}

.back-link:hover { color: var(--ink); }

@media (max-width: 520px) {
    .auth-card {
        padding: 30px 24px;
        border-radius: 22px;
    }
}