:root {
    --auth-background: #f4f7fb;
    --auth-surface: #ffffff;
    --auth-text: #182230;
    --auth-muted: #667085;
    --auth-border: #e4e7ec;
    --auth-primary: #3157d5;
    --auth-primary-dark: #2446ba;
    --auth-primary-soft: #eef2ff;
    --auth-danger: #b42318;
    --auth-danger-soft: #fef3f2;
    --auth-success: #027a48;
    --auth-success-soft: #ecfdf3;
}

* {
    box-sizing: border-box;
}

.auth-page {
    margin: 0;
    min-width: 320px;
    background: var(--auth-background);
    color: var(--auth-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.auth-shell {
    width: min(100% - 32px, 480px);
    margin: 0 auto;
    padding: 28px 0 56px;
}

.auth-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 48px;
    color: var(--auth-text);
    font-size: 19px;
    font-weight: 700;
    text-decoration: none;
}

.auth-brand-mark {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--auth-primary);
    box-shadow: 0 0 0 5px var(--auth-primary-soft);
}

.auth-card {
    padding: 34px;
    border: 1px solid var(--auth-border);
    border-radius: 16px;
    background: var(--auth-surface);
    box-shadow: 0 14px 40px rgba(24, 34, 48, 0.07);
}

.auth-heading {
    margin-bottom: 28px;
}

.auth-eyebrow {
    display: block;
    margin-bottom: 10px;
    color: var(--auth-primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.auth-heading h1 {
    margin: 0 0 10px;
    font-size: 30px;
    letter-spacing: -0.03em;
}

.auth-heading p,
.auth-switch {
    margin: 0;
    color: var(--auth-muted);
    font-size: 14px;
    line-height: 1.6;
}

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

.form-field {
    display: grid;
    gap: 8px;
    color: var(--auth-text);
    font-size: 14px;
    font-weight: 700;
}

.form-field input {
    width: 100%;
    min-height: 46px;
    padding: 11px 13px;
    border: 1px solid var(--auth-border);
    border-radius: 9px;
    background: var(--auth-surface);
    color: var(--auth-text);
    font: inherit;
    font-weight: 400;
}

.form-field input::placeholder {
    color: #98a2b3;
}

.form-field input:focus-visible,
.auth-primary-button:focus-visible,
.auth-brand:focus-visible,
.auth-switch a:focus-visible {
    outline: 3px solid rgba(49, 87, 213, 0.25);
    outline-offset: 2px;
}

.auth-primary-button {
    min-height: 46px;
    margin-top: 4px;
    border: 1px solid var(--auth-primary);
    border-radius: 9px;
    background: var(--auth-primary);
    color: #ffffff;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
}

.auth-primary-button:hover {
    border-color: var(--auth-primary-dark);
    background: var(--auth-primary-dark);
}

.auth-alert {
    margin-bottom: 18px;
    padding: 11px 13px;
    border-radius: 9px;
    font-size: 14px;
    line-height: 1.5;
}

.auth-alert-error {
    background: var(--auth-danger-soft);
    color: var(--auth-danger);
}

.auth-alert-success {
    background: var(--auth-success-soft);
    color: var(--auth-success);
}

.field-error {
    margin-top: -12px;
    color: var(--auth-danger);
    font-size: 13px;
}

.auth-switch {
    margin-top: 24px;
    text-align: center;
}

.auth-switch a {
    color: var(--auth-primary);
    font-weight: 700;
    text-decoration: none;
}

.auth-switch a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

@media (max-width: 520px) {
    .auth-shell {
        padding-top: 20px;
    }

    .auth-brand {
        margin-bottom: 32px;
    }

    .auth-card {
        padding: 24px 20px;
        border-radius: 12px;
    }
}