:root {
    --openrouter-onboarding-overlay-bg: rgba(28, 43, 76, 0.58);
    --openrouter-onboarding-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
    --openrouter-onboarding-focus-shadow: 0 0 0 3px rgba(235, 129, 50, 0.16);
    --openrouter-required-shadow: 0 0 0 3px rgba(235, 129, 50, 0.12);
    --openrouter-required-bg: rgba(235, 129, 50, 0.08);
}

.openrouter-onboarding-locked {
    overflow: hidden;
}

.openrouter-onboarding-overlay {
    position: fixed;
    inset: 0;
    z-index: 2500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--openrouter-onboarding-overlay-bg);
    backdrop-filter: blur(4px);
}

.openrouter-onboarding-modal {
    width: min(620px, 92vw);
    max-height: 88vh;
    overflow-y: auto;
    background: var(--modal-bg);
    color: var(--modal-text);
    border: 1px solid var(--modal-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--openrouter-onboarding-shadow);
    padding: var(--spacing-xl);
}

.openrouter-onboarding-header {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.openrouter-onboarding-icon {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--button-primary-bg);
    color: var(--button-primary-text);
}

.openrouter-onboarding-modal h2 {
    margin: 0 0 var(--spacing-xs);
    font-size: 1.6rem;
    line-height: 1.2;
}

.openrouter-onboarding-modal p {
    margin: 0;
    color: var(--text-color-light);
    line-height: 1.5;
}

.openrouter-onboarding-steps {
    margin: 0 0 var(--spacing-lg);
    padding-left: 1.35rem;
}

.openrouter-onboarding-steps li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.openrouter-onboarding-steps a {
    color: var(--link-color);
    font-weight: 600;
}

.openrouter-onboarding-form {
    display: grid;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.openrouter-onboarding-form label {
    font-weight: 600;
}

.openrouter-onboarding-form input,
.openrouter-onboarding-form select {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 14px;
    border: 2px solid var(--input-border);
    border-radius: var(--radius-md);
    background: var(--input-bg);
    color: var(--input-text);
    font: inherit;
}

.openrouter-onboarding-form input:focus,
.openrouter-onboarding-form select:focus {
    outline: none;
    border-color: var(--brand-accent-orange);
    box-shadow: var(--openrouter-onboarding-focus-shadow);
}

.openrouter-onboarding-status {
    min-height: 1.3em;
    font-size: var(--font-size-sm);
}

.openrouter-onboarding-status[data-status="success"] {
    color: var(--color-success);
}

.openrouter-onboarding-status[data-status="error"] {
    color: var(--color-error);
}

.openrouter-onboarding-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

.openrouter-onboarding-actions .btn-primary,
.openrouter-onboarding-actions .btn-secondary {
    min-height: 44px;
}

.openrouter-settings-required {
    border-color: var(--brand-accent-orange);
    box-shadow: var(--openrouter-required-shadow);
}

.openrouter-required-notice {
    margin: 0 0 var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--brand-accent-orange);
    border-radius: var(--radius-md);
    background: var(--openrouter-required-bg);
    color: var(--text-color);
}

@media (max-width: 520px) {
    .openrouter-onboarding-overlay {
        align-items: flex-start;
        padding: var(--spacing-md);
    }

    .openrouter-onboarding-modal {
        max-height: calc(100vh - 32px);
        padding: var(--spacing-lg);
    }

    .openrouter-onboarding-header {
        flex-direction: column;
    }

    .openrouter-onboarding-actions {
        flex-direction: column;
        align-items: stretch;
    }
}