.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 16px;
    background:
        radial-gradient(ellipse 80% 60% at 50% -10%, rgba(37, 99, 235, 0.1) 0%, transparent 70%),
        var(--color-bg-base);
}

.auth-back {
    position: fixed;
    top: 20px;
    left: 20px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-base);
    background: var(--color-bg-elevated);
    transition: color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
    z-index: 10;
}

.auth-back:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-strong);
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.18);
}

.auth-back i {
    font-size: 14px;
}

.auth-card {
    width: 100%;
    max-width: 590px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-base);
    border-radius: var(--radius-sm);
    padding: 40px 36px;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.04) 0%, transparent 60%);
    pointer-events: none;
}

.auth-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
}

.auth-logo img {
    height: 40px;
    width: auto;
}

.auth-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text-primary);
    text-align: center;
    margin: 0 0 6px;
    letter-spacing: -0.3px;
}

.auth-subtitle {
    font-size: 13px;
    color: var(--color-text-muted);
    text-align: center;
    margin: 0 0 28px;
}

.auth-subtitle a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-subtitle a:hover {
    text-decoration: underline;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.auth-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.auth-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.auth-input-wrap i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 14px;
    pointer-events: none;
    line-height: 1;
}

.auth-input {
    width: 100%;
    padding: 11px 14px 11px 40px;
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-base);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-size: 14px;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.auth-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.auth-input::placeholder {
    color: var(--color-text-muted);
}

.auth-input.is-error {
    border-color: var(--color-danger);
}

.auth-field-hint {
    font-size: 11px;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.auth-forgot {
    display: flex;
    justify-content: flex-end;
    margin-top: -8px;
}

.auth-forgot a {
    font-size: 12px;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-base);
}

.auth-forgot a:hover {
    color: var(--color-primary);
}

.auth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 20px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
    margin-top: 4px;
}

.auth-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
    transform: skewX(-20deg);
    transition: left 0.5s ease;
}

.auth-btn:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 0 20px var(--color-primary-glow);
}

.auth-btn:hover::before {
    left: 150%;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 4px 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border-base);
}

.auth-divider span {
    font-size: 11px;
    color: var(--color-text-muted);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.auth-discord-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 11px 20px;
    background: #5865f2;
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
}

.auth-discord-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
    transform: skewX(-20deg);
    transition: left 0.5s ease;
}

.auth-discord-btn:hover {
    background: #4752c4;
    box-shadow: 0 0 20px rgba(88, 101, 242, 0.4);
}

.auth-discord-btn:hover::before {
    left: 150%;
}

.auth-discord-btn i {
    font-size: 18px;
}

.auth-alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    line-height: 1.5;
}

.auth-alert i {
    font-size: 15px;
    flex-shrink: 0;
    margin-top: 1px;
}

.auth-alert.is-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #fca5a5;
}

.auth-alert.is-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.25);
    color: #86efac;
}

.auth-alert.is-info {
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.25);
    color: #93c5fd;
}

.auth-alert ul {
    margin: 4px 0 0;
    padding-left: 16px;
}

.auth-alert ul li {
    margin-bottom: 2px;
}

.auth-info-box {
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-base);
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
}

.auth-info-box i {
    font-size: 36px;
    color: var(--color-primary);
    display: block;
    margin-bottom: 12px;
}

.auth-info-box p {
    margin: 0 0 8px;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.auth-info-box p:last-child {
    margin-bottom: 0;
}

.auth-resend-form {
    margin-top: 16px;
}

.auth-terms {
    font-size: 11px;
    color: var(--color-text-muted);
    text-align: center;
    margin-top: 4px;
}

.auth-terms a {
    color: var(--color-text-muted);
    text-decoration: underline;
}

.auth-terms a:hover {
    color: var(--color-primary);
}

.auth-field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.auth-label-optional {
    font-size: 11px;
    font-weight: 400;
    color: var(--color-text-muted);
    margin-left: 4px;
}

.auth-referral-toggle {
    margin-top: -4px;
}

.auth-checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 13px;
    color: var(--color-text-secondary);
    user-select: none;
}

.auth-checkbox-label:hover {
    color: var(--color-text-primary);
}

.auth-checkbox {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.auth-referral-field {
    display: none;
}

.auth-referral-field.is-visible {
    display: flex;
    flex-direction: column;
    gap: 6px;
    animation: auth-slide-down 0.2s ease;
}

@keyframes auth-slide-down {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 520px) {
    .auth-field-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .auth-card {
        padding: 28px 20px;
    }

    .auth-back {
        top: 12px;
        left: 12px;
        padding: 6px 10px;
        font-size: 12px;
    }
}

/* ── OTP Digit Boxes ── */
.otp-digit-group {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 4px;
}

.otp-digit-input {
    width: 52px;
    height: 60px;
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    font-family: var(--font-sans);
    color: var(--color-text-primary);
    background: var(--color-bg-base);
    border: 1.5px solid var(--color-border-base);
    border-radius: var(--radius-sm);
    outline: none;
    caret-color: transparent;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
    -moz-appearance: textfield;
}

.otp-digit-input::-webkit-outer-spin-button,
.otp-digit-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.otp-digit-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    background: var(--color-bg-elevated);
}

.otp-digit-input.is-filled {
    border-color: var(--color-primary);
    background: rgba(37, 99, 235, 0.06);
}

.otp-digit-input.is-error {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

@media (max-width: 420px) {
    .otp-digit-group {
        gap: 7px;
    }

    .otp-digit-input {
        width: 40px;
        height: 50px;
        font-size: 18px;
    }
}