/* Onboarding Styles */
.onboarding-overlay {
    position: fixed;
    inset: 0;
    background: #f8fafc;
    z-index: 9999;
    display: none; /* Hidden by default, shown via JS */
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    padding: 2rem;
    animation: fadeIn 0.4s ease-out;
}

[data-theme="dark"] .onboarding-overlay {
    background: #0f172a;
}

.onboarding-card {
    background: white;
    width: 100%;
    max-width: 650px;
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .onboarding-card {
    background: #1e293b;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.onboarding-progress-container {
    margin-bottom: 2.5rem;
}

.onboarding-progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
}

[data-theme="dark"] .onboarding-progress-bar {
    background: #334155;
}

.onboarding-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6, #3b82f6);
    width: 50%; /* Default 50% for step 1 */
    transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.onboarding-step {
    display: none;
    animation: slideUp 0.5s ease-out;
}

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

.onboarding-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 0.75rem;
    letter-spacing: -0.025em;
}

.onboarding-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 2.5rem;
    line-height: 1.5;
}

/* Options Grid */
.onboarding-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.onboarding-option-card {
    border: 2px solid #e2e8f0;
    border-radius: 20px;
    padding: 1.75rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

[data-theme="dark"] .onboarding-option-card {
    border-color: #334155;
    background: rgba(255, 255, 255, 0.02);
}

.onboarding-option-card:hover {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.02);
    transform: translateY(-4px);
}

.onboarding-option-card.selected {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.05);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.1);
}

.onboarding-option-card.selected::after {
    content: '✓';
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #3b82f6;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
}

.onboarding-option-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: #eff6ff;
    color: #3b82f6;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .onboarding-option-icon {
    background: rgba(59, 130, 246, 0.15);
}

.onboarding-option-name {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-main);
}

.onboarding-option-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Upload List */
.upload-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f1f5f9;
    border-radius: 12px;
    margin-bottom: 0.75rem;
}

[data-theme="dark"] .upload-item {
    background: rgba(255, 255, 255, 0.05);
}

.upload-info {
    flex: 1;
}

.upload-btn {
    background: white;
    border: 1px solid #e2e8f0;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.825rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

[data-theme="dark"] .upload-btn {
    background: #334155;
    border-color: #475569;
    color: white;
}

.upload-btn:hover {
    background: #e2e8f0;
}

/* Animations */
@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
    .onboarding-options {
        grid-template-columns: 1fr;
    }
    .onboarding-card {
        padding: 2rem;
    }
}