.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100%;
    padding: 24px;
}
.auth-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
}
.auth-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 32px;
}
.auth-logo .brand-name {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    font-family: var(--font-serif);
}
.auth-logo .brand-name em {
    font-style: italic;
    color: var(--indigo);
}
.field {
    margin-bottom: 1rem;
}
.field label {
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-2);
    margin-bottom: 6px;
    display: block;
}
.field input {
    width: 100%;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--ink);
    outline: none;
    transition: border-color .15s;
}
.field input:focus {
    border-color: var(--indigo);
}
.error-msg {
    background: oklch(0.96 0.02 20);
    border: 1px solid oklch(0.88 0.06 20);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 13px;
    color: var(--rose);
    margin-bottom: 16px;
}
.auth-heading {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 6px;
}
.auth-subheading {
    font-size: 13.5px;
    color: var(--ink-4);
    margin-bottom: 28px;
}
.auth-footer {
    margin-top: 24px;
    font-size: 13px;
    color: var(--ink-4);
    text-align: center;
}
.auth-link {
    color: var(--indigo);
    font-weight: 500;
}
.auth-button {
    justify-content: center;
    height: 44px;
    font-size: 15px;
}
.auth-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
}
.auth-checkbox-input {
    width: auto;
}
.auth-logo-img {
    width: 36px;
    height: 36px;
}
.auth-optional-text {
    color: var(--ink-4);
    font-weight: 400;
}