:root {
    --auth-card-w: 560px;
}

body {
    min-height: 100vh;
    background:
        radial-gradient(circle at 10% 15%, rgba(var(--c-accent-rgb), 0.18), transparent 35%),
        radial-gradient(circle at 90% 85%, rgba(var(--c-accent-rgb), 0.12), transparent 45%),
        var(--c-bg);
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 28px 14px;
    position: relative;
}

.auth-backdrop {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(8, 19, 29, 0.5), rgba(8, 19, 29, 0.9));
}

.auth-card {
    position: relative;
    z-index: 1;
    width: min(100%, var(--auth-card-w));
    border-radius: var(--r-lg);
    border: 1px solid var(--c-border);
    background: linear-gradient(180deg, rgba(14, 31, 48, 0.92), rgba(8, 19, 29, 0.95));
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
    padding: 24px;
}

.auth-head {
    margin-bottom: 16px;
}

.auth-brand {
    display: inline-block;
    font-family: var(--ff-head);
    font-weight: var(--fw-black);
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--c-text);
}

.auth-brand span {
    color: var(--c-accent);
}

.auth-kicker {
    margin: 12px 0 6px;
    color: var(--c-text-2);
    font-size: .88rem;
}

.auth-head h1 {
    margin: 0;
    font-family: var(--ff-head);
    font-size: clamp(1.5rem, 3.4vw, 2rem);
    line-height: 1.15;
}

.auth-sub {
    margin: 8px 0 0;
    color: var(--c-text-2);
}

.auth-form {
    display: grid;
    gap: 10px;
}

.auth-form label {
    color: var(--c-text-2);
    font-size: .92rem;
}

.auth-form input {
    width: 100%;
    border-radius: var(--r-md);
    border: 1px solid var(--c-border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--c-text);
    padding: 12px 14px;
    outline: none;
    transition: border-color var(--trans), box-shadow var(--trans);
}

.auth-form input:focus {
    border-color: var(--c-border-h);
    box-shadow: 0 0 0 3px rgba(var(--c-accent-rgb), 0.2);
}

.auth-pass {
    position: relative;
}

.auth-pass input {
    padding-right: 44px;
}

.auth-pass-toggle {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    border: 1px solid var(--c-border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--c-text-2);
    border-radius: 8px;
    width: 30px;
    height: 30px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--trans);
}

.auth-pass-toggle:hover {
    color: var(--c-text);
    border-color: var(--c-border-h);
}

.auth-submit {
    margin-top: 8px;
    width: 100%;
}

.auth-divider {
    position: relative;
    margin: 18px 0 14px;
    text-align: center;
    color: var(--c-text-3);
    font-size: .86rem;
}

.auth-divider::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    border-top: 1px solid var(--c-border);
}

.auth-divider span {
    position: relative;
    z-index: 1;
    background: rgba(10, 20, 30, 0.95);
    padding: 0 10px;
}

.auth-socials {
    display: grid;
    gap: 10px;
}

.auth-social-btn {
    width: 100%;
    justify-content: center;
}

.auth-social-btn span {
    display: inline-grid;
    place-items: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid var(--c-border);
    font-size: .85rem;
    font-weight: 700;
}

.auth-msg {
    min-height: 24px;
    margin: 14px 0 0;
    color: var(--c-text-2);
}

.auth-msg.is-error {
    color: var(--c-err);
}

.auth-msg.is-ok {
    color: var(--c-ok);
}

.auth-actions {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

@media (max-width: 560px) {
    .auth-card {
        padding: 20px 16px;
    }

    .auth-actions .btn {
        width: 100%;
    }
}