/* ============================================
   ONBOARDING MODAL STYLES
   Separate file to keep index.html clean
   ============================================ */

.onboarding-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 20000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    animation: onboardingFadeIn 0.3s ease-out;
}

.onboarding-overlay.hidden {
    display: none;
}

@keyframes onboardingFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes onboardingSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.onboarding-modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    max-width: 920px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    animation: onboardingSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Header */
.onboarding-header {
    padding: var(--space-xl) var(--space-xl) var(--space-lg);
    text-align: center;
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.onboarding-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent), var(--success));
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.onboarding-welcome-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-md);
    display: block;
}

.onboarding-welcome-icon.icon-welcome { color: var(--brand-primary); }
.onboarding-welcome-icon.icon-target { color: var(--brand-primary); }
.onboarding-welcome-icon.icon-messages { color: var(--brand-primary); }
.onboarding-welcome-icon.icon-credits { color: var(--success); }

.onboarding-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
    letter-spacing: -0.02em;
}

.onboarding-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.5;
}

/* Step Dots */
.onboarding-steps {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.step-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--neutral-300);
    transition: all 0.3s ease;
    cursor: pointer;
}

.step-dot:hover {
    background: var(--neutral-400);
}

.step-dot.active {
    width: 24px;
    border-radius: 4px;
    background: var(--brand-primary);
}

.step-dot.completed {
    background: var(--success);
}

/* Content */
.onboarding-content {
    padding: var(--space-xl);
}

.onboarding-step {
    display: none;
    animation: onboardingFadeIn 0.3s ease-out;
}

.onboarding-step.active {
    display: block;
}

/* Mode Cards Grid */
.mode-explanation-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.mode-explain-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.mode-explain-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.mode-explain-card.fast::before {
    background: linear-gradient(90deg, var(--warning-light), var(--warning));
}

.mode-explain-card.advanced::before {
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
}

.mode-explain-card.research::before {
    background: linear-gradient(90deg, var(--success-light), var(--success));
}

.mode-explain-card:hover {
    border-color: var(--brand-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mode-icon-large {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-md);
}

.mode-icon-large.icon-fast { color: var(--warning); }
.mode-icon-large.icon-advanced { color: var(--brand-primary); }
.mode-icon-large.icon-research { color: var(--success); }

.mode-explain-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--space-xs) 0;
}

.mode-explain-tagline {
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-md);
}

.mode-explain-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.mode-explain-stats {
    display: flex;
    gap: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-light);
    margin-bottom: var(--space-md);
}

.mode-stat-item {
    flex: 1;
    text-align: center;
}

.mode-stat-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}

.mode-stat-label {
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.mode-use-cases {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
}

.mode-use-cases-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.mode-use-cases-title svg {
    width: 14px;
    height: 14px;
    color: var(--warning);
}

.mode-use-case {
    font-size: 13px;
    color: var(--text-secondary);
    padding: var(--space-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mode-use-case svg {
    width: 12px;
    height: 12px;
    color: var(--brand-primary);
    flex-shrink: 0;
}

/* Example Queries */
.example-section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.example-queries-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.example-query-group {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.example-group-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-light);
}

.example-group-icon {
    width: 24px;
    height: 24px;
}

.example-group-icon.icon-fast { color: var(--warning); }
.example-group-icon.icon-advanced { color: var(--brand-primary); }
.example-group-icon.icon-research { color: var(--success); }

.example-group-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.example-query-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    padding-right: 80px;
}

.example-query-item:hover {
    border-color: var(--brand-primary);
    background: var(--brand-primary-bg);
    color: var(--text-primary);
}

.example-query-item:last-child {
    margin-bottom: 0;
}

.try-query-hint {
    position: absolute;
    right: var(--space-sm);
    top: 50%;
    transform: translateY(-50%);
    font-size: 11px;
    color: var(--brand-primary);
    opacity: 0;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.try-query-hint svg {
    width: 12px;
    height: 12px;
}

.example-query-item:hover .try-query-hint {
    opacity: 1;
}

/* Credits */
.credits-explanation {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.credits-hero {
    margin-bottom: var(--space-xl);
}

.credits-hero-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    color: var(--brand-primary);
}

.credits-hero-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
}

.credits-hero-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 500px;
    margin: 0 auto;
}

.credits-breakdown {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.credit-item {
    background: var(--bg-secondary);
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-xl);
    min-width: 160px;
    transition: all 0.3s ease;
}

.credit-item:hover {
    border-color: var(--brand-primary);
    transform: translateY(-2px);
}

.credit-item.fast { border-top: 3px solid var(--warning); }
.credit-item.advanced { border-top: 3px solid var(--brand-primary); }
.credit-item.research { border-top: 3px solid var(--success); }

.credit-item-icon {
    width: 28px;
    height: 28px;
    margin: 0 auto var(--space-sm);
}

.credit-item-icon.icon-fast { color: var(--warning); }
.credit-item-icon.icon-advanced { color: var(--brand-primary); }
.credit-item-icon.icon-research { color: var(--success); }

.credit-item-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.credit-item-cost {
    font-size: 24px;
    font-weight: 700;
    color: var(--brand-primary);
}

.credit-item-cost span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-tertiary);
}

.credits-explanation-note {
    background: linear-gradient(135deg, var(--brand-primary-bg), var(--success-bg));
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: left;
}

.credits-note-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.credits-note-title svg {
    width: 18px;
    height: 18px;
    color: var(--warning);
}

.credits-note-text {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Footer */
.onboarding-footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.onboarding-skip {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 14px;
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

.onboarding-skip:hover {
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.onboarding-nav-buttons {
    display: flex;
    gap: var(--space-md);
}

.onboarding-btn {
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.onboarding-btn svg {
    width: 16px;
    height: 16px;
}

.onboarding-btn-secondary {
    background: var(--bg-primary);
    border: 1px solid var(--border-medium);
    color: var(--text-secondary);
}

.onboarding-btn-secondary:hover {
    border-color: var(--border-dark);
    color: var(--text-primary);
}

.onboarding-btn-primary {
    background: var(--brand-primary);
    border: none;
    color: var(--text-inverse);
}

.onboarding-btn-primary:hover {
    background: var(--brand-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.onboarding-btn-success {
    background: var(--success);
    border: none;
    color: var(--text-inverse);
}

.onboarding-btn-success:hover {
    background: var(--success);
    filter: brightness(0.9);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Help Button for Sidebar */
.help-tour-btn {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-medium);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.help-tour-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.help-tour-btn svg {
    width: 18px;
    height: 18px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .onboarding-modal {
        max-height: 95vh;
        margin: var(--space-sm);
        border-radius: var(--radius-lg);
    }
    
    .onboarding-header {
        padding: var(--space-lg);
    }
    
    .onboarding-title {
        font-size: 22px;
    }
    
    .onboarding-content {
        padding: var(--space-lg);
    }
    
    .mode-explanation-grid,
    .example-queries-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .credits-breakdown {
        flex-direction: column;
        align-items: center;
    }
    
    .credit-item {
        width: 100%;
        max-width: 250px;
    }
    
    .onboarding-footer {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .onboarding-nav-buttons {
        width: 100%;
        justify-content: center;
    }

    .example-query-item {
        padding-right: var(--space-md);
    }

    .try-query-hint {
        display: none;
    }
}

/* Legal Footer */
.legal-footer {
    font-size: 11px;
    color: var(--text-tertiary);
    text-align: center;
    margin-top: 24px;
    padding-bottom: 16px;
}

.legal-footer a {
    color: var(--text-tertiary);
    text-decoration: underline;
}

.legal-footer a:hover {
    color: var(--text-secondary);
}