.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.45);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-primary:disabled {
    background: #cbd5e1;
    box-shadow: none;
    cursor: not-allowed;
}

.btn-secondary {
    background: transparent;
    color: var(--gray-600);
    padding: 1rem 2rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.btn-row {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-row .btn-primary {
    flex: 2;
}

.btn-row .btn-secondary {
    flex: 1;
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s linear infinite;
}

@media (max-width: 768px) {
    .btn-row {
        flex-direction: column-reverse;
    }
}